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 dsPIC30F1010/202X Data Sheet
28/44-Pin High-Performance Switch Mode Power Supply Digital Signal Controllers
(c) 2006 Microchip Technology Inc.
Advance Information
DS70178A
Note the following details of the code protection feature on Microchip devices: * * Microchip products meet the specification contained in their particular Microchip Data Sheet. Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the intended manner and under normal conditions. There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip's Data Sheets. Most likely, the person doing so is engaged in theft of intellectual property. Microchip is willing to work with the customer who is concerned about the integrity of their code. Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not mean that we are guaranteeing the product as "unbreakable."
*
* *
Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our products. Attempts to break Microchip's code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.
Information contained in this publication regarding device applications and the like is provided only for your convenience and may be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED, WRITTEN OR ORAL, STATUTORY OR OTHERWISE, RELATED TO THE INFORMATION, INCLUDING BUT NOT LIMITED TO ITS CONDITION, QUALITY, PERFORMANCE, MERCHANTABILITY OR FITNESS FOR PURPOSE. Microchip disclaims all liability arising from this information and its use. Use of Microchip devices in life support and/or safety applications is entirely at the buyer's risk, and the buyer agrees to defend, indemnify and hold harmless Microchip from any and all damages, claims, suits, or expenses resulting from such use. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights.
Trademarks The Microchip name and logo, the Microchip logo, Accuron, dsPIC, KEELOQ, microID, MPLAB, PIC, PICmicro, PICSTART, PRO MATE, PowerSmart, rfPIC and SmartShunt are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. AmpLab, FilterLab, Migratable Memory, MXDEV, MXLAB, SEEVAL, SmartSensor and The Embedded Control Solutions Company are registered trademarks of Microchip Technology Incorporated in the U.S.A. Analog-for-the-Digital Age, Application Maestro, dsPICDEM, dsPICDEM.net, dsPICworks, ECAN, ECONOMONITOR, FanSense, FlexROM, fuzzyLAB, In-Circuit Serial Programming, ICSP, ICEPIC, Linear Active Thermistor, Mindi, MiWi, MPASM, MPLIB, MPLINK, PICkit, PICDEM, PICDEM.net, PICLAB, PICtail, PowerCal, PowerInfo, PowerMate, PowerTool, REAL ICE, rfLAB, rfPICDEM, Select Mode, Smart Serial, SmartTel, Total Endurance, UNI/O, WiperLock and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. (c) 2006, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved. Printed on recycled paper.
Microchip received ISO/TS-16949:2002 certification for its worldwide headquarters, design and wafer fabrication facilities in Chandler and Tempe, Arizona, Gresham, Oregon and Mountain View, California. The Company's quality system processes and procedures are for its PICmicro(R) 8-bit MCUs, KEELOQ(R) code hopping devices, Serial EEPROMs, microperipherals, nonvolatile memory and analog products. In addition, Microchip's quality system for the design and manufacture of development systems is ISO 9001:2000 certified.
DS70178A-page ii
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(c) 2006 Microchip Technology Inc.
dsPIC30F1010/202X
28/44-pin dsPIC30F1010/202X Enhanced Flash SMPS 16-bit Digital Signal Controller
Peripheral Features:
Note: This data sheet summarizes features of this group of dsPIC30F devices and is not intended to be a complete reference source. For more information on the CPU, peripherals, register descriptions and general device functionality, refer to the "dsPIC30F Family Reference Manual" (DS70046). For more information on the device instruction set and programming, refer to the "dsPIC30F/ 33F Programmer's Reference Manual" (DS70157).
High-Performance Modified RISC CPU:
* Modified Harvard architecture * C compiler optimized instruction set architecture * 83 base instructions with flexible addressing modes * 24-bit wide instructions, 16-bit wide data path * 12 Kbytes on-chip Flash program space * 512 bytes on-chip data RAM * 16 x 16-bit working register array * Up to 30 MIPs operation: - Dual Internal RC 9.7 and 14.55 MHz (1%) - 32X PLL with 480 MHz VCO - PLL inputs 3% - External EC clock 9.7 and 14.55 MHz - HS Crystal mode 9.7 and 14.55 MHz * 32 interrupt sources * Three external interrupt sources * 8 user-selectable priority levels for each interrupt * 4 processor exceptions and software traps
* High-current sink/source I/O pins: 25 mA/25 mA * Three 16-bit timers/counters; optionally pair up 16-bit timers into 32-bit timer modules * Four 16-bit Capture input functions * Two 16-bit Compare/PWM output functions - Dual Compare mode available * 3-wire SPI modules (supports 4 Frame modes) * I2CTM module supports Multi-Master/Slave mode and 7-bit/10-bit addressing * UART Module: - Supports RS-232, RS-485 and LIN 1.2 - Supports IrDA(R) with on-chip hardware endec - Auto wake-up on Start bit - Auto-Baud Detect - 4-level FIFO buffer
SMPS PWM Module Features:
* Four PWM generators with 8 outputs * Each PWM generator has independent time base and duty cycle * Duty cycle resolution of 1.1 ns at 30 MIPS * Individual dead time for each PWM generator: - Dead-time resolution 4.2 ns at 30 MIPS - Dead time for rising and falling edges * Phase-shift resolution of 4.2 ns @ 30 MIPS * Frequency resolution of 8.4 ns @ 30 MIPS * PWM modes supported: - Complementary - Push-Pull - Multi-Phase - Variable Phase - Current Reset - Current-Limit * Independent Current-Limit and Fault Inputs * Output Override Control * Special Event Trigger * PWM generated ADC Trigger
DSP Engine Features:
* Modulo and Bit-Reversed modes * Two 40-bit wide accumulators with optional saturation logic * 17-bit x 17-bit single-cycle hardware fractional/ integer multiplier * Single-cycle Multiply-Accumulate (MAC) operation * 40-stage Barrel Shifter * Dual data fetch
(c) 2006 Microchip Technology Inc.
Advance Information
DS70178A-page 1
dsPIC30F1010/202X
Analog Features:
ADC 10-bit resolution 2000 Ksps conversion rate Up to 12 input channels "Conversion pairing" allows simultaneous conversion of two inputs (i.e., current and voltage) with a single trigger * PWM control loop: - Up to six conversion pairs available - Each conversion pair has up to four PWM and seven other selectable trigger sources * Interrupt hardware supports up to 1M interrupts per second COMPARATOR * Four Analog Comparators: - 20 ns response time - 10-bit DAC reference generator - Programmable output polarity - Selectable input source - ADC sample and convert capable * PWM module interface - PWM Duty Cycle Control - PWM Period Control - PWM Fault Detect * Special Event Trigger * PWM-generated ADC Trigger dsPIC30F SWITCH MODE POWER SUPPLY FAMILY: Analog Comparators 2 2 2 4 4 4 4 4 Data SRAM (Bytes) Packaging Compare Program Memory (Bytes) Capture Timers * * * *
Special Microcontroller Features:
* Enhanced Flash program memory: - 10,000 erase/write cycle (min.) for industrial temperature range, 100k (typical) * Self-reprogrammable under software control * Power-on Reset (POR), Power-up Timer (PWRT) and Oscillator Start-up Timer (OST) * Flexible Watchdog Timer (WDT) with on-chip low power RC oscillator for reliable operation * Fail-Safe clock monitor operation * Detects clock failure and switches to on-chip low power RC oscillator * Programmable code protection * In-Circuit Serial ProgrammingTM (ICSPTM) * Selectable Power Management modes - Sleep, Idle and Alternate Clock modes
CMOS Technology:
* * * * Low-power, high-speed Flash technology 3.0V and 5.0V operation (10%) Industrial and Extended temperature ranges Low power consumption
Product
Pins
dsPIC30F1010 dsPIC30F1010 dsPIC30F1010 DSPIC30F2020 DSPIC30F2020 DSPIC30F2020 dsPIC30F2023 dsPIC30F2023
28 28 28 28 28 28 44 44
SDIP SOIC QFN SDIP SOIC QFN QFN TQFP
6K 6K 6K 12K 12K 12K 12K 12K
256 256 256 512 512 512 512 512
2 2 2 3 3 3 3 3
0 0 0 1 1 1 1 1
1 1 1 2 2 2 2 2
1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1
2x2 2x2 2x2 4x2 4x2 4x2 4x2 4x2
1 1 1 1 1 1 1 1
2 2 2 4 4 4 4 4
12 ch 12 ch
DS70178A-page 2
Advance Information
(c) 2006 Microchip Technology Inc.
A/D Inputs 6 ch 6 ch 6 ch 8 ch 8 ch 8 ch
UART
ADCs
S&H
I2CTM
PWM
SPI
dsPIC30F1010/202X
Pin Diagrams
28-Pin SDIP and SOIC
MCLR AN0/CMP1A/CN2/RB0 AN1/CMP1B/CN3/RB1 AN2/CMP1C/CMP2A/CN4/RB2 AN3/CMP1D/CMP2B/CN5/RB3 AN4/CMP2C/CN6/RB4 AN5/CMP2D/CN7/RB5 VSS OSC1/CLKI/RB6 OSC2/CLKO/RB7 EMUD1/PGD1/U1ATX/CN1/T2CK/RE7 EMUC1/EXTREF/T1CK/U1ARX/CN0/RE6 VDD PGC2/EMUD2/SCK1/SFLT3/INT2/RF6
1 2 3 4 5 6 7 8 9 10 11 12 13 14
28 27 26 25 24 23 22 21 20 19 18 17 16 15
AVDD AVSS PWM1L/RE0 PWM1H/RE1 PWM2L/RE2 PWM2H/RE3 RE4 RE5 VDD VSS PGC/EMUC/SDI1/SDA/U1RX/RF7 PGD/EMUD/SDO1/SCL/U1TX/RF8 SFLT2/INT0/OCFLTA/RA9 PGD2/EMUC2/OC1/SFLT1/INT1/RD0
28-Pin QFN
AN1/CMP1B/CN3/RB1 AN0/CMP1A/CN2/RB0 MCLR AVDD AVSS PWM1L/RE0 PWM1H/RE1 28 27 26 25 24 23 22 AN2/CMP1C/CMP2A/CN4/RB2 AN3/CMP1D/CMP2B/CN5/RB3 AN4/CMP2C/CN6/RB4 AN5/CMP2D/CN7/RB5 VSS OSC1/CLKI/RB6 OSC2/CLKO/RB7 1 2 3 4 5 6 7 21 20 19 18 17 16 15 PWM2L/RE2 PWM2H/RE3 RE4 RE5 VDD VSS PGC/EMUC/SDI1/SDA/U1RX/RF7
dsPIC30F1010
8 9 10 11 12 13 14 PGD1/EMUD1/T2CK/U1ATX/CN1/RE7 PGC1/EMUC1/EXTREF/U1ARX/T1CK/CN0/RE6 VDD PGD2/EMUD2/SCK1/SFLT3/INT2/RF6 PGC2/EMUC2/OC1/SFLT1/IC1/INT1/RD0 SFLT2/INT0/OCFLTA/RA9 PGD/EMUD/SDO1/SCL/U1TX/RF8
(c) 2006 Microchip Technology Inc.
Advance Information
dsPIC30F1010
DS70178A-page 3
dsPIC30F1010/202X
28-Pin SDIP and SOIC
MCLR AN0/CMP1A/CN2/RB0 AN1/CMP1B/CN3/RB1 AN2/CMP1C/CMP2A/CN4/RB2 AN3/CMP1D/CMP2B/CN5/RB3 AN4/CMP2C/CMP3A/CN6/RB4 AN5/CMP2D/CMP3B/CN7/RB5 VSS AN6/CMP3C/CMP4A/OSC1/CLKI/RB6 AN7/CMP3D/CMP4B/OSC2/CLKO/RB7 PGD1/EMUD1/PWM4H/U1ATX/CN1/T2CK/RE7 EMUC1/PGC1/EXTREF/PWM4L/U1ARX/CN0/T1CK/RE6 VDD PGD2/EMUD2/SCK1/SFLT3/OC2/INT2/RF6
1 2 3 4 5 6 7 8 9 10 11 12 13 14
28 27 26 25 24 23 22 21 20 19 18 17 16 15
AVDD AVSS PWM1L/RE0 PWM1H/RE1 PWM2L/RE2 PWM2H/RE3 PWM3L/RE4 PWM3H/RE5 VDD VSS PGC/EMUC/SDI1/SDA/U1RX/RF7 PGD/EMUD/SDO1/SCL/U1TX/RF8 SFLT2/INT0/OCFLTA/RA9 PGC2/EMUC2/OC1/SFLT1/IC1/INT1/RD0
28 27 26 25 24 23 22 AN2/CMP1C/CMP2A/CN4/RB2 AN3/CMP1D/CMP2B/CN5/RB3 AN4/CMP2C/CMP3A/CN6/RB4 AN5/CMP2D/CMP3B/CN7/RB5 VSS AN6/CMP3C/CMP4A/OSC1/CLKI/RB6 AN7/CMP3D/CMP4B/OSC2/CLKO/RB7 1 2 3 4 5 6 7 21 20 19 18 17 16 15 PWM2L/RE2 PWM2H/RE3 PWM3L/RE4 PWM3H/RE5 VDD VSS PGC/EMUC/SDI1/SDA/U1RX/RF7
DSPIC30F2020
8 9 10 11 12 13 14 PGD1/EMUD1/PWM4H/T2CK/U1ATX/CN1/RE7 PGC1/EMUC1/EXTREF/PWM4L/T1CK/U1ARX/CN0/RE6 VDD PGD2/EMUD2/SCK1/SFLT3/OC2/INT2/RF6 PGC2/EMUC2/OC1/SFLT1/IC1/INT1/RD0 SFLT2/INT0/OCFLTA/RA9 PGD/EMUD/SDO1/SCL/U1TX/RF8
DS70178A-page 4
Advance Information
AN1/CMP1B/CN3/RB1 AN0/CMP1A/CN2/RB0 MCLR AVDD AVSS PWM1L/RE0 PWM1H/RE1
28-Pin QFN
DSPIC30F2020
(c) 2006 Microchip Technology Inc.
dsPIC30F1010/202X
Pin Diagrams
PGD/EMUD/SDO1/RF8 SFLT2/INT0/OCFLTA/RA9 PGC2/EMUC2/OC1/IC1/INT1/RD0 PGD2/EMUD2/SCK1/INT2/RF6 VDD VSS OC2/RD1 SFLT1/RA8 AN9/EXTREF/CMP4D/RB9 PGC1/EMUC1/PWM4L/T1CK/U1ARX/CN0/RE6 PGD1/EMUD1/PWM4H/T2CK/U1ATX/CN1/RE7 44 43 42 41 40 39 38 37 36 35 34 PGC/EMUC/SDI1/RF7 SYNCO/SSI/RF15 SFLT3/RA10 SFLT4/RA11 SDA/RG3 VSS VDD PWM3H/RE5 PWM3L/RE4 PWM2H/RE3 PWM2L/RE2 1 2 3 4 5 6 7 8 9 10 11 33 32 31 30 29 28 27 26 25 24 23 AN7/CMP3D/CMP4B/OSC2/CLKO/RB7 AN6/CMP3C/CMP4A/OSC1/CLKI/RB6 AN8/CMP4C/RB8 VSS VDD AN10/IFLT4/RB10 AN11/IFLT2/RB11 AN5/CMP2D/CMP3B/CN7/RB5 AN4/CMP2C/CMP3A/CN6/RB4 AN3/CMP1D/CMP2B/CN5/RB3 AN2/CMP1C/CMP2A/CN4/RB2
44-PIN QFN
dsPIC30F2023
12 13 14 15 16 17 18 19 20 21 22 PWM1H/RE1 PWM1L/RE0 SYNCI/RF14 U1RX/RF2 AVSS AVDD MCLR SCL/ RG2 U1TX/RF3 EMUD3/AN0/CMP1A/CN2/RB0 EMUC3/AN1/CMP1B/CN3/RB1
(c) 2006 Microchip Technology Inc.
Advance Information
DS70178A-page 5
dsPIC30F1010/202X
Pin Diagrams
PGD/EMUD/SDO1/RF8 SFLT2/INT0/RA9 PGC2/EMUC2/OC1/IC1/INT1/RD0 PGD2/EMUD2/SCK1/INT2/RF6 VDD VSS OC2/RD1 SFLT1/RA8 AN9/EXTREF/CMP4D/RB9 PGC1/EMUC1/PWM4L/T1CK/U1ARX/CN0/RE6 PGD1/EMUD1/PWM4H/T2CK/U1ATX/CN1/RE7 44 43 42 41 40 39 38 37 36 35 34
44-Pin TQFP
PGC/EMUC/SDI1/RF7 SYNCO/SSI/RF15 SFLT3/RA10 SFLT4/RA11 SDA/RG3 VSS VDD PWM3H/RE5 PWM3L/RE4 PWM2H/RE3 PWM2L/RE2
1 2 3 4 5 6 7 8 9 10 11
dsPIC30F2023
33 32 31 30 29 28 27 26 25 24 23
AN7/CMP3D/CMP4B/OSC2/CLKO/RB7 AN6/CMP3C/CMP4A/OSC1/CLKI/RB6 AN8/CMP4C/RB8 VSS VDD AN10/IFLT4/RB10 AN11/IFLT2/RB11 AN5/CMP2D/CMP3B/CN7/RB5 AN4/CMP2C/CMP3A/CN6/RB4 AN3/CMP1D/CMP2B/CN5/RB3 AN2/CMP1C/CMP2A/CN4/RB2
DS70178A-page 6
Advance Information
PWM1H/RE1 PWM1L/RE0 SYNCI/RF14 U1RX/RF2 AVSS AVDD MCLR SCL/RG2 U1TX/RF3 AN0/EMUD3/CMP1A/CN2/RB0 AN1/EMUC3/CMP1B/CN3/RB1
22 21 20 19 18 17 16 15 14 13 12
(c) 2006 Microchip Technology Inc.
dsPIC30F1010/202X
Table of Contents
1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.0 18.0 19.0 20.0 21.0 22.0 Device Overview .......................................................................................................................................................................... 9 CPU Architecture Overview........................................................................................................................................................ 21 Memory Organization ................................................................................................................................................................. 31 Address Generator Units............................................................................................................................................................ 43 Interrupts .................................................................................................................................................................................... 49 I/O Ports ..................................................................................................................................................................................... 77 Flash Program Memory.............................................................................................................................................................. 81 Timer1 Module ........................................................................................................................................................................... 87 Timer2/3 Module ........................................................................................................................................................................ 91 Input Capture Module................................................................................................................................................................. 97 Output Compare Module .......................................................................................................................................................... 101 Power Supply PWM ................................................................................................................................................................. 107 SPI Module............................................................................................................................................................................... 145 I2CTM Module............................................................................................................................................................................ 149 Universal Asynchronous Receiver Transmitter (UART) Module .............................................................................................. 157 10-bit 2 Msps Analog-to-Digital Converter (ADC) Module........................................................................................................ 165 SMPS Comparator Module ...................................................................................................................................................... 185 System Integration ................................................................................................................................................................... 191 Instruction Set Summary .......................................................................................................................................................... 213 Development Support............................................................................................................................................................... 221 Electrical Characteristics .......................................................................................................................................................... 225 Package Marking Information................................................................................................................................................... 257
(c) 2006 Microchip Technology Inc.
Advance Information
DS70178A-page 7
dsPIC30F1010/202X
TO OUR VALUED CUSTOMERS
It is our intention to provide our valued customers with the best documentation possible to ensure successful use of your Microchip products. To this end, we will continue to improve our publications to better suit your needs. Our publications will be refined and enhanced as new volumes and updates are introduced. If you have any questions or comments regarding this publication, please contact the Marketing Communications Department via E-mail at docerrors@microchip.com or fax the Reader Response Form in the back of this data sheet to (480) 792-4150. We welcome your feedback.
Most Current Data Sheet
To obtain the most up-to-date version of this data sheet, please register at our Worldwide Web site at: http://www.microchip.com You can determine the version of a data sheet by examining its literature number found on the bottom outside corner of any page. The last character of the literature number is the version number, (e.g., DS30000A is version A of document DS30000).
Errata
An errata sheet, describing minor operational differences from the data sheet and recommended workarounds, may exist for current devices. As device/documentation issues become known to us, we will publish an errata sheet. The errata will specify the revision of silicon and revision of document to which it applies. To determine if an errata sheet exists for a particular device, please check with one of the following: * Microchip's Worldwide Web site; http://www.microchip.com * Your local Microchip sales office (see last page) When contacting a sales office, please specify which device, revision of silicon and data sheet (include literature number) you are using.
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DS70178A-page 8
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(c) 2006 Microchip Technology Inc.
dsPIC30F1010/202X
1.0 DEVICE OVERVIEW
Note: This data sheet summarizes features of this group of dsPIC30F devices and is not intended to be a complete reference source. For more information on the CPU, peripherals, register descriptions and general device functionality, refer to the "dsPIC30F Family Reference Manual" (DS70046). For more information on the device instruction set and programming, refer to the "dsPIC30F/ 33F Programmer's Reference Manual" (DS70157).
This document contains device specific information for the dsPIC30F1010/202X SMPS devices. These devices contain extensive Digital Signal Processor (DSP) functionality within a high-performance 16-bit microcontroller (MCU) architecture, as reflected in the following block diagrams. Figure 1-1 and Table 1-1 describe the dsPIC30F1010 SMPS device, Figure 1-2 and Table 1-2 describe the DSPIC30F2020 device and Figure 1-3 and Table 1-3 describe the dsPIC30F2023 SMPS device.
(c) 2006 Microchip Technology Inc.
Advance Information
DS70178A-page 9
dsPIC30F1010/202X
FIGURE 1-1: dsPIC30F1010 BLOCK DIAGRAM
Y Data Bus X Data Bus 16 Interrupt Controller PSV & Table Data Access 24 Control Block 16 16 16 Data Latch X Data RAM (256 bytes) Address Latch 16 X RAGU X WAGU 16 AN0/CMP1A/CN2/RB0 AN1/CMP1B/CN3/RB1 AN2/CMP1C/CMP2A/CN4/RB2 AN3/CMP1D/CMP2B/CN5/RB3 AN4/CMP2C/CN6/RB4 AN5/CMP2D/CN7/RB5 OSC1/CLKI/RB6 OSC2/CLKO/RB7 16
8
16
24 24 PCU PCH PCL Program Counter Loop Stack Control Control Logic Logic
Data Latch Y Data RAM (256 bytes) Address Latch 16 Y AGU
SFLT2/INT0/OCFLTA/RA9 PORTA
Address Latch Program Memory (12 Kbytes)
Effective Address Data Latch 16 PORTB
ROM Latch 24 IR 16
16
16 16 x 16 W Reg Array 16 16
Decode Instruction Decode & Control Control Signals to Various Blocks Timing Generation DSP Engine
Power-up Timer Oscillator Start-up Timer POR Reset MCLR Watchdog Timer
Divide Unit PGC2/EMUC2/OC1/SFLT1/ INT1/RD0 ALU<16> PORTD
OSC1/CLK1
16
16
Comparator Module
10-bit ADC
Output Compare Module
I2CTM
SPI1
Timers
Input Change Notification
SMPS PWM
UART1 PORTE
PWM1L/RE0 PWM1H/RE1 PWM2L/RE2 PWM2H/RE3 RE4 RE5 PGC1/EMUC1/EXTREF/T1CK/ U1ARX/CN0/RE6 PGD1/EMUD1/T2CK/U1ATX/ CN1/RE7
PGD2/EMUD2/SCK1/SFLT3/ INT2/RF6 PGC/EMUC/SDI1/SDA/U1RX/RF7 PGD/EMUD/SD01/SCL/U1TX/RF8 PORTF
DS70178A-page 10
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(c) 2006 Microchip Technology Inc.
dsPIC30F1010/202X
Table 1-1 provides a brief description of device I/O pinouts for the dsPIC30F1010 and the functions that may be multiplexed to a port pin. Multiple functions may exist on one port pin. When multiplexing occurs, the peripheral module's functional requirements may force an override of the data direction of the port pin.
TABLE 1-1:
Pin Name AN0-AN5 AVDD AVSS CLKI CLKO
PINOUT I/O DESCRIPTIONS FOR dsPIC30F1010
Pin Type I P P I O Buffer Type Analog P P Analog input channels. Positive supply for analog module. Ground reference for analog module. Description
ST/CMOS External clock source input. Always associated with OSC1 pin function. -- Oscillator crystal output. Connects to crystal or resonator in Crystal Oscillator mode. Optionally functions as CLKO in RC and EC modes. Always associated with OSC2 pin function. ST ST ST ST ST ST ST ST ST ST ST ST -- -- -- -- ST -- ST CMOS -- ST ST ST ST ST ST ST ST ST ICD Primary Communication Channel data input/output pin. ICD Primary Communication Channel clock input/output pin. ICD Secondary Communication Channel data input/output pin. ICD Secondary Communication Channel clock input/output pin. ICD Tertiary Communication Channel data input/output pin. ICD Tertiary Communication Channel clock input/output pin. External interrupt 0 External interrupt 1 External interrupt 2 Shared Fault Pin 1 Shared Fault Pin 2 Shared Fault Pin 3 PWM 1 Low output PWM 1 High output PWM 2 Low output PWM 2 High output Master Clear (Reset) input or programming voltage input. This pin is an active low Reset to the device. Compare outputs. Output Compare Fault Pin Oscillator crystal input. Oscillator crystal output. Connects to crystal or resonator in Crystal Oscillator mode. Optionally functions as CLKO in FRC and EC modes. In-Circuit Serial ProgrammingTM data input/output pin. In-Circuit Serial Programming clock input pin. In-Circuit Serial Programming data input/output pin 1. In-Circuit Serial Programming clock input pin 1. In-Circuit Serial Programming data input/output pin 2. In-Circuit Serial Programming clock input pin 2. PORTB is a bidirectional I/O port. PORTA is a bidirectional I/O port. PORTD is a bidirectional I/O port. Analog = Analog input O = Output P = Power
EMUD EMUC EMUD1 EMUC1 EMUD2 EMUC2 INT0 INT1 INT2 SFLT1 SFLT2 SFLT3 PWM1L PWM1H PWM2L PWM2H MCLR OC1 OCFLTA OSC1 OSC2 PGD PGC PGD1 PGC1 PGD2 PGC2 RB0-RB7 RA9 RD0 Legend:
I/O I/O I/O I/O I/O I/O I I I I I I O O O O I/P O I I I/O I/O I I/O I I/0 I I/O I/O I/O
CMOS = CMOS compatible input or output ST = Schmitt Trigger input with CMOS levels I = Input
(c) 2006 Microchip Technology Inc.
Advance Information
DS70178A-page 11
dsPIC30F1010/202X
TABLE 1-1:
Pin Name RE0-RE7 RF6, RF7, RF8 SCK1 SDI1 SDO1 SS1 SCL SDA T1CK T2CK U1RX U1TX U1ARX U1ATX CMP1A CMP1B CMP1C CMP1D CMP2A CMP2B CMP2C CMP2D CN0-CN7 VDD VSS VREF+ VREFEXTREF Legend:
PINOUT I/O DESCRIPTIONS FOR dsPIC30F1010 (CONTINUED)
Pin Type I/O I/O I/O I O I I/O I/O I I I O I O I I I I I I I I I P P I I I Buffer Type ST ST ST ST -- ST ST ST ST ST ST -- ST -- Analog Analog Analog Analog Analog Analog Analog Analog ST -- -- Analog Analog Analog Description PORTE is a bidirectional I/O port. PORTF is a bidirectional I/O port. Synchronous serial clock input/output for SPI #1. SPI #1 Data In. SPI #1 Data Out. SPI #1 Slave Synchronization. Synchronous serial clock input/output for I2CTM. Synchronous serial data input/output for I2C. Timer1 external clock input. Timer2 external clock input. UART1 Receive. UART1 Transmit. Alternate UART1 Receive. Alternate UART1 Transmit. Comparator 1 Channel A Comparator 1 Channel B Comparator 1 Channel C Comparator 1 Channel D Comparator 2 Channel A Comparator 2 Channel B Comparator 2 Channel C Comparator 2 Channel D Input Change notification inputs Can be software programmed for internal weak pull-ups on all inputs. Positive supply for logic and I/O pins. Ground reference for logic and I/O pins. Analog Voltage Reference (High) input. Analog Voltage Reference (Low) input. External reference to Comparator DAC Analog = Analog input O = Output P = Power
CMOS = CMOS compatible input or output ST = Schmitt Trigger input with CMOS levels I = Input
DS70178A-page 12
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FIGURE 1-2: DSPIC30F2020 BLOCK DIAGRAM
Y Data Bus X Data Bus 16 Interrupt Controller PSV & Table Data Access 24 Control Block 16 16 16 Data Latch X Data RAM (256 bytes) Address Latch 16 X RAGU X WAGU 16 AN0/CMP1A/CN2/RB0 AN1/CMP1B/CN3/RB1 AN2/CMP1C/CMP2A/CN4/RB2 AN3/CMP1D/CMP2B/CN5/RB3 AN4/CMP2C/CMP3A/CN6/RB4 AN5/CMP2D/CMP3B/CN7/RB5 AN6/CMP3C/CMP4A/ CLKI/OSC1/RB6 AN7/CMP3D/CMP4B/ CLKO/OSC2/RB7 ROM Latch 24 IR 16 16 x 16 W Reg Array 16 16 16 16 PORTB 16
8
16
24 24 PCU PCH PCL Program Counter Loop Stack Control Control Logic Logic
Data Latch Y Data RAM (256 bytes) Address Latch 16 Y AGU
SFLT2/INT0/OCFLTA/RA9 PORTA
Address Latch Program Memory (12 Kbytes)
Effective Address Data Latch 16
Decode Instruction Decode & Control Control Signals to Various Blocks Timing Generation DSP Engine
Power-up Timer Oscillator Start-up Timer POR Reset MCLR Watchdog Timer
Divide Unit PGC2/EMUC2/OC1/SFLT1/IC1/ INT1/RD0 ALU<16> PORTD
OSC1/CLK1
16
16
Comparator Module
10-bit ADC
Input Capture Module
Output Compare Module
I2CTM
SPI1
Timers
Input Change Notification
SMPS PWM
UART1 PORTE
PWM1L/RE0 PWM1H/RE1 PWM2L/RE2 PWM2H/RE3 PWM3L/RE4 PWM3H/RE5 PGC1/EMUC1/EXTREF/PWM4L/ T1CK/ U1ARX/CN0/RE6 PGD1/EMUD1/PWM4H/T2CK/ U1ATX/CN1/RE7
PGD2/EMUD2/SCK1/SFLT3/OC2/ INT2/RF6 PGC/EMUC/SDI1/SDA/U1RX/RF7 PGD/EMUD/SD01/SCL/U1TX/RF8 PORTF
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dsPIC30F1010/202X
Table 1-2 provides a brief description of device I/O pinouts for the DSPIC30F2020 and the functions that may be multiplexed to a port pin. Multiple functions may exist on one port pin. When multiplexing occurs, the peripheral module's functional requirements may force an override of the data direction of the port pin.
TABLE 1-2:
Pin Name AN0-AN7 AVDD AVSS CLKI CLKO
PINOUT I/O DESCRIPTIONS FOR DSPIC30F2020
Pin Type I P P I O Buffer Type Analog P P Analog input channels. Positive supply for analog module. Ground reference for analog module. Description
ST/CMOS External clock source input. Always associated with OSC1 pin function. -- Oscillator crystal output. Connects to crystal or resonator in Crystal Oscillator mode. Optionally functions as CLKO in RC and EC modes. Always associated with OSC2 pin function. ST ST ST ST ST ST ST ST ST ST ST ST ST -- -- -- -- -- -- -- -- ST -- CMOS -- ST ST ST ST ST ST ICD Primary Communication Channel data input/output pin. ICD Primary Communication Channel clock input/output pin. ICD Secondary Communication Channel data input/output pin. ICD Secondary Communication Channel clock input/output pin. ICD Tertiary Communication Channel data input/output pin. ICD Tertiary Communication Channel clock input/output pin. Capture input. External interrupt 0 External interrupt 1 External interrupt 2 Shared Fault Pin 1 Shared Fault Pin 2 Shared Fault Pin 3 PWM 1 Low output PWM 1 High output PWM 2 Low output PWM 2 High output PWM 3 Low output PWM 3 High output PWM 4 Low output PWM 4 High output Master Clear (Reset) input or programming voltage input. This pin is an active low Reset to the device. Compare outputs. Output Compare Fault pin Oscillator crystal input. Oscillator crystal output. Connects to crystal or resonator in Crystal Oscillator mode. Optionally functions as CLKO in FRC and EC modes. In-Circuit Serial ProgrammingTM data input/output pin. In-Circuit Serial Programming clock input pin. In-Circuit Serial Programming data input/output pin 1. In-Circuit Serial Programming clock input pin 1. In-Circuit Serial Programming data input/output pin 2. In-Circuit Serial Programming clock input pin 2. Analog = Analog input O = Output P = Power
EMUD EMUC EMUD1 EMUC1 EMUD2 EMUC2 IC1 INT0 INT1 INT2 SFLT1 SFLT2 SFLT3 PWM1L PWM1H PWM2L PWM2H PWM3L PWM3H PWM4L PWM4H MCLR OC1-OC2 OCFLTA OSC1 OSC2 PGD PGC PGD1 PGC1 PGD2 PGC2 Legend:
I/O I/O I/O I/O I/O I/O I I I I I I I O O O O O O O O I/P O I I I/O I/O I I/O I I/O I
CMOS = CMOS compatible input or output ST = Schmitt Trigger input with CMOS levels I = Input
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TABLE 1-2:
Pin Name RB0-RB7 RA9 RD0 RE0-RE7 RF6, RF7, RF8 SCK1 SDI1 SDO1 SS1 SCL SDA T1CK T2CK U1RX U1TX U1ARX U1ATX CMP1A CMP1B CMP1C CMP1D CMP2A CMP2B CMP2C CMP2D CMP3A CMP3B CMP3C CMP3D CMP4A CMP4B CN0-CN7 VDD VSS VREF+ VREFEXTREF Legend:
PINOUT I/O DESCRIPTIONS FOR DSPIC30F2020 (CONTINUED)
Pin Type I/O I/O I/O I/O I/O I/O I O I I/O I/O I I I O I O I I I I I I I I I I I I I I I P P I I I Buffer Type ST ST ST ST ST ST ST -- ST ST ST ST ST ST -- ST O Analog Analog Analog Analog Analog Analog Analog Analog Analog Analog Analog Analog Analog Analog ST -- -- Analog Analog Analog Description PORTB is a bidirectional I/O port. PORTA is a bidirectional I/O port. PORTD is a bidirectional I/O port. PORTE is a bidirectional I/O port. PORTF is a bidirectional I/O port. Synchronous serial clock input/output for SPI #1. SPI #1 Data In. SPI #1 Data Out. SPI #1 Slave Synchronization. Synchronous serial clock input/output for I2CTM. Synchronous serial data input/output for I2C. Timer1 external clock input. Timer2 external clock input. UART1 Receive. UART1 Transmit. Alternate UART1 Receive. Alternate UART1 Transmit. Comparator 1 Channel A Comparator 1 Channel B Comparator 1 Channel C Comparator 1 Channel D Comparator 2 Channel A Comparator 2 Channel B Comparator 2 Channel C Comparator 2 Channel D Comparator 3 Channel A Comparator 3 Channel B Comparator 3 Channel C Comparator 3 Channel D Comparator 4 Channel A Comparator 4 Channel B Input Change notification inputs Can be software programmed for internal weak pull-ups on all inputs. Positive supply for logic and I/O pins. Ground reference for logic and I/O pins. Analog Voltage Reference (High) input. Analog Voltage Reference (Low) input. External reference to Comparator DAC Analog = Analog input O = Output P = Power
CMOS = CMOS compatible input or output ST = Schmitt Trigger input with CMOS levels I = Input
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dsPIC30F1010/202X
FIGURE 1-3: dsPIC30F2023 BLOCK DIAGRAM
Y Data Bus X Data Bus 16 Interrupt Controller PSV & Table Data Access 24 Control Block 16 16 16 Data Latch X Data RAM (256 bytes) Address Latch 16 X RAGU X WAGU 16 PORTA EMUD3/AN0/CMP1A/CN2/RB0 EMUC3/AN1/CMP1B/CN3/RB1 AN2/CMP1C/CMP2A/CN4/RB2 AN3/CMP1D/CMP2B/CN5/RB3 AN4/CMP2C/CMP3A/CN6/RB4 AN5/CMP2D/CMP3B/CN7/RB5 AN6/CMP3C/CMP4A/ OSC1/CLKI/RB6 AN7/CMP3D/CMP4B/ OSC2/CLKO/RB7 AN8/CMP4C/RB8 AN9/EXTREF/CMP4D/RB9 AN10/IFLT4/RB10 AN11/IFLT2/RB11 16 16 x 16 W Reg Array 16 16 PORTB 16
8
16
24 24 PCU PCH PCL Program Counter Loop Stack Control Control Logic Logic
Data Latch Y Data RAM (256 bytes) Address Latch 16 Y AGU
SFLT1/RA8 SFLT2/INT0/OCFLTA/RA9 SFLT3/RA10 SFLT4/RA11
Address Latch Program Memory (12 Kbytes)
Effective Address Data Latch 16
ROM Latch 24 IR 16
16
Decode Instruction Decode & Control Control Signals to Various Blocks Timing Generation DSP Engine
PGC2/EMUC2/OC1/IC1/INT1/ RD0 OC2/RD1 PORTD
Power-up Timer Oscillator Start-up Timer POR Reset MCLR Watchdog Timer
Divide Unit PWM1L/RE0 PWM1H/RE1 PWM2L/RE2 PWM2H/RE3 PWM3L/RE4 PWM3H/RE5 PGC1/EMUC1/PWM4L/T1CK/ U1ARX/CN0/RE6 PGD1/EMUD1/PWM4H/T2CK/ U1ATX/CN1/RE7
OSC1/CLK1
ALU<16> 16 16
PORTE
Comparator Module
10-bit ADC
Input Capture Module
Output Compare Module
I2CTM
SPI1
Timers
Input Change Notification
SMPS PWM
UART1 PORTF
U1RX/RF2 U1TX/RF3 PGD2/EMUD2/SCK1/INT2/RF6 PGC/EMUC/SDI1/RF7 PGD/EMUD/SD01/RF8 SYNCI/RF14 SYNCO/SSI/RF15
SCL/RG2 SDA/RG3 PORTG
DS70178A-page 16
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dsPIC30F1010/202X
Table 1-3 provides a brief description of device I/O pinouts for the dsPIC30F2023 and the functions that may be multiplexed to a port pin. Multiple functions may exist on one port pin. When multiplexing occurs, the peripheral module's functional requirements may force an override of the data direction of the port pin.
TABLE 1-3:
Pin Name AN0-AN11 AVDD AVSS CLKI CLKO
PINOUT I/O DESCRIPTIONS FOR dsPIC30F2023
Pin Type I P P I O Buffer Type Analog P P Analog input channels. Positive supply for analog module. Ground reference for analog module. Description
ST/CMOS External clock source input. Always associated with OSC1 pin function. -- Oscillator crystal output. Connects to crystal or resonator in Crystal Oscillator mode. Optionally functions as CLKO in RC and EC modes. Always associated with OSC2 pin function. ST ST ST ST ST ST ST ST ST ST ST ST ST ST ST ST -- -- -- -- -- -- -- -- -- ST ST -- ST CMOS -- ICD Primary Communication Channel data input/output pin. ICD Primary Communication Channel clock input/output pin. ICD Secondary Communication Channel data input/output pin. ICD Secondary Communication Channel clock input/output pin. ICD Tertiary Communication Channel data input/output pin. ICD Tertiary Communication Channel clock input/output pin. Capture input. External interrupt 0 External interrupt 1 External interrupt 2 Shared Fault 1 Shared Fault 2 Shared Fault 3 Shared Fault 4 Independent Fault 2 Independent Fault 4 PWM 1 Low output PWM 1 High output PWM 2 Low output PWM 2 High output PWM 3 Low output PWM 3 High output PWM 4 Low output PWM 4 High output PWM SYNC output PWM SYNC input Master Clear (Reset) input or programming voltage input. This pin is an active low Reset to the device. Compare outputs. Output Compare Fault condition. Oscillator crystal input. Oscillator crystal output. Connects to crystal or resonator in Crystal Oscillator mode. Optionally functions as CLKO in FRC and EC modes. Analog = Analog input O = Output P = Power
EMUD EMUC EMUD1 EMUC1 EMUD2 EMUC2 IC1 INT0 INT1 INT2 SFLT1 SFLT2 SFLT3 SFLT4 IFLT2 IFLT4 PWM1L PWM1H PWM2L PWM2H PWM3L PWM3H PWM4L PWM4H SYNCO SYNCI MCLR OC1-OC2 OCFLTA OSC1 OSC2 Legend:
I/O I/O I/O I/O I/O I/O I I I I I I I I I I O O O O O O O O O I I/P O I I I/O
CMOS = CMOS compatible input or output ST = Schmitt Trigger input with CMOS levels I = Input
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dsPIC30F1010/202X
TABLE 1-3:
Pin Name PGD PGC PGD1 PGC1 PGD2 PGC2 RA0,RA8RA11 RB0-RB11 RD0,RD1 RE0-RE7 RF2, RF3, RF6-RF8, RF14, RF15 RG2, RG3 SCK1 SDI1 SDO1 SS1 SCL SDA T1CK T2CK U1RX U1TX U1ARX U1ATX CMP1A CMP1B CMP1C CMP1D CMP2A CMP2B CMP2C CMP2D CMP3A CMP3B CMP3C CMP3D CMP4A CMP4B CMP4C CMP4D CN0-CN7 VDD VSS VREF+ Legend:
PINOUT I/O DESCRIPTIONS FOR dsPIC30F2023 (CONTINUED)
Pin Type I/O I I/O I I/O I I/O I/O I/O I/O I/O Buffer Type ST ST ST ST ST ST ST ST ST ST ST Description In-Circuit Serial ProgrammingTM data input/output pin. In-Circuit Serial Programming clock input pin. In-Circuit Serial Programming data input/output pin 1. In-Circuit Serial Programming clock input pin 1. In-Circuit Serial Programming data input/output pin 2. In-Circuit Serial Programming clock input pin 2. PORTA is a bidirectional I/O port. PORTB is a bidirectional I/O port. PORTD is a bidirectional I/O port. PORTE is a bidirectional I/O port. PORTF is a bidirectional I/O port.
I/O I/O I O I I/O I/O I I I O I O I I I I I I I I I I I I I I I I I P P I
ST ST ST -- ST ST ST ST ST ST -- ST -- Analog Analog Analog Analog Analog Analog Analog Analog Analog Analog Analog Analog Analog Analog Analog Analog ST -- -- Analog
PORTG is a bidirectional I/O port. Synchronous serial clock input/output for SPI #1. SPI #1 Data In. SPI #1 Data Out. SPI #1 Slave Synchronization. Synchronous serial clock input/output for I2C. Synchronous serial data input/output for I2C. Timer1 external clock input. Timer2 external clock input. UART1 Receive. UART1 Transmit. Alternate UART1 Receive. Alternate UART1 Transmit Comparator 1 Channel A Comparator 1 Channel B Comparator 1 Channel C Comparator 1 Channel D Comparator 2 Channel A Comparator 2 Channel B Comparator 2 Channel C Comparator 2 Channel D Comparator 3 Channel A Comparator 3 Channel B Comparator 3 Channel C Comparator 3 Channel D Comparator 4 Channel A Comparator 4 Channel B Comparator 4 Channel C Comparator 4 Channel D Input Change notification inputs Can be software programmed for internal weak pull-ups on all inputs. Positive supply for logic and I/O pins. Ground reference for logic and I/O pins. Analog Voltage Reference (High) input. Analog = Analog input O = Output P = Power
CMOS = CMOS compatible input or output ST = Schmitt Trigger input with CMOS levels I = Input
DS70178A-page 18
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TABLE 1-3:
Pin Name VREFEXTREF Legend:
PINOUT I/O DESCRIPTIONS FOR dsPIC30F2023 (CONTINUED)
Pin Type I I Buffer Type Analog Analog Description Analog Voltage Reference (Low) input. External reference to Comparator DAC Analog = Analog input O = Output P = Power
CMOS = CMOS compatible input or output ST = Schmitt Trigger input with CMOS levels I = Input
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NOTES:
DS70178A-page 20
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dsPIC30F1010/202X
2.0 CPU ARCHITECTURE OVERVIEW
* Linear indirect access of 32K word pages within program space is also possible using any working register, via table read and write instructions. Table read and write instructions can be used to access all 24 bits of an instruction word. Overhead-free circular buffers (modulo addressing) are supported in both X and Y address spaces. This is primarily intended to remove the loop overhead for DSP algorithms. The X AGU also supports Bit-Reversed Addressing mode on destination effective addresses, to greatly simplify input or output data reordering for radix-2 FFT algorithms. Refer to Section 4.0 "Address Generator Units" for details on modulo and Bit-Reversed Addressing. The core supports Inherent (no operand), Relative, Literal, Memory Direct, Register Direct, Register Indirect, Register Offset and Literal Offset Addressing modes. Instructions are associated with predefined Addressing modes, depending upon their functional requirements. For most instructions, the core is capable of executing a data (or program data) memory read, a working register (data) read, a data memory write and a program (instruction) memory read per instruction cycle. As a result, 3-operand instructions are supported, allowing C = A + B operations to be executed in a single cycle. A DSP engine has been included to significantly enhance the core arithmetic capability and throughput. It features a high-speed 17-bit by 17-bit multiplier, a 40-bit ALU, two 40-bit saturating accumulators and a 40-bit bidirectional barrel shifter. Data in the accumulator or any working register can be shifted up to 15 bits right or 16 bits left in a single cycle. The DSP instructions operate seamlessly with all other instructions and have been designed for optimal real-time performance. The MAC class of instructions can concurrently fetch two data operands from memory, while multiplying two W registers. To enable this concurrent fetching of data operands, the data space has been split for these instructions and linear for all others. This has been achieved in a transparent and flexible manner, by dedicating certain working registers to each address space for the MAC class of instructions. The core does not support a multi-stage instruction pipeline. However, a single stage instruction prefetch mechanism is used, which accesses and partially decodes instructions a cycle ahead of execution, in order to maximize available execution time. Most instructions execute in a single cycle, with certain exceptions. The core features a vectored exception processing structure for traps and interrupts, with 62 independent vectors. The exceptions consist of up to 8 traps (of which 4 are reserved) and 54 interrupts. Each interrupt is prioritized based on a user-assigned priority between 1 and 7 (1 being the lowest priority and 7 being the highest) in conjunction with a predetermined `natural order'. Traps have fixed priorities, ranging from 8 to 15.
Note: This data sheet summarizes features of this group of dsPIC30F devices and is not intended to be a complete reference source. For more information on the CPU, peripherals, register descriptions and general device functionality, refer to the "dsPIC30F Family Reference Manual" (DS70046). For more information on the device instruction set and programming, refer to the "dsPIC30F/ 33F Programmer's Reference Manual" (DS70157).
This document provides a summary of the dsPIC30F1010/202X CPU and peripheral function. For a complete description of this functionality, please refer to the "dsPIC30F Family Reference Manual" (DS70046).
2.1
Core Overview
The core has a 24-bit instruction word. The Program Counter (PC) is 23 bits wide with the Least Significant bit (LSb) always clear (see Section 3.1 "Program Address Space"), and the Most Significant bit (MSb) is ignored during normal program execution, except for certain specialized instructions. Thus, the PC can address up to 4M instruction words of user program space. An instruction prefetch mechanism is used to help maintain throughput. Program loop constructs, free from loop count management overhead, are supported using the DO and REPEAT instructions, both of which are interruptible at any point. The working register array consists of 16x16-bit registers, each of which can act as data, address or offset registers. One working register (W15) operates as a software Stack Pointer for interrupts and calls. The data space is 64 Kbytes (32K words) and is split into two blocks, referred to as X and Y data memory. Each block has its own independent Address Generation Unit (AGU). Most instructions operate solely through the X memory AGU, which provides the appearance of a single unified data space. The Multiply-Accumulate (MAC) class of dual source DSP instructions operate through both the X and Y AGUs, splitting the data address space into two parts (see Section 3.2 "Data Address Space"). The X and Y data space boundary is device-specific and cannot be altered by the user. Each data word consists of 2 bytes, and most instructions can address data either as words or bytes. There are two methods of accessing data stored in program memory: * The upper 32 Kbytes of data space memory can be mapped into the lower half (user space) of program space at any 16K program word boundary, defined by the 8-bit Program Space Visibility Page (PSVPAG) register. This lets any instruction access program space as if it were data space, with a limitation that the access requires an additional cycle. Moreover, only the lower 16 bits of each instruction word can be accessed using this method.
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dsPIC30F1010/202X
2.2 Programmer's Model
2.2.1
The programmer's model is shown in Figure 2-1 and consists of 16x16-bit working registers (W0 through W15), 2x40-bit accumulators (AccA and AccB), STATUS register (SR), Data Table Page register (TBLPAG), Program Space Visibility Page register (PSVPAG), DO and REPEAT registers (DOSTART, DOEND, DCOUNT and RCOUNT), and Program Counter (PC). The working registers can act as data, address or offset registers. All registers are memory mapped. W0 acts as the W register for file register addressing. Some of these registers have a shadow register associated with each of them, as shown in Figure 2-1. The shadow register is used as a temporary holding register and can transfer its contents to or from its host register upon the occurrence of an event. None of the shadow registers are accessible directly. The following rules apply for transfer of registers into and out of shadows. * PUSH.S and POP.S W0, W1, W2, W3, SR (DC, N, OV, Z and C bits only) are transferred. * DO instruction DOSTART, DOEND, DCOUNT shadows are pushed on loop start, and popped on loop end. When a byte operation is performed on a working register, only the Least Significant Byte (LSB) of the target register is affected. However, a benefit of memory mapped working registers is that both the Least and Most Significant Bytes (MSBs) can be manipulated through byte wide data memory space accesses.
SOFTWARE STACK POINTER/ FRAME POINTER
The dsPIC(R) DSC devices contain a software stack. W15 is the dedicated software Stack Pointer (SP), and will be automatically modified by exception processing and subroutine calls and returns. However, W15 can be referenced by any instruction in the same manner as all other W registers. This simplifies the reading, writing and manipulation of the Stack Pointer (e.g., creating stack frames). Note: In order to protect against misaligned stack accesses, W15<0> is always clear.
W15 is initialized to 0x0800 during a Reset. The user may reprogram the SP during initialization to any location within data space. W14 has been dedicated as a Stack Frame Pointer as defined by the LNK and ULNK instructions. However, W14 can be referenced by any instruction in the same manner as all other W registers.
2.2.2
STATUS REGISTER
The dsPIC DSC core has a 16-bit STATUS Register (SR), the LSB of which is referred to as the SR Low Byte (SRL) and the MSB as the SR High Byte (SRH). See Figure 2-1 for SR layout. SRL contains all the MCU ALU operation status flags (including the Z bit), as well as the CPU Interrupt Priority Level Status bits, IPL<2:0>, and the REPEAT active Status bit, RA. During exception processing, SRL is concatenated with the MSB of the PC to form a complete word value, which is then stacked. The upper byte of the STATUS register contains the DSP Adder/Subtracter status bits, the DO Loop Active bit (DA) and the Digit Carry (DC) Status bit.
2.2.3
PROGRAM COUNTER
The Program Counter is 23 bits wide. Bit 0 is always clear. Therefore, the PC can address up to 4M instruction words.
DS70178A-page 22
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FIGURE 2-1: PROGRAMMER'S MODEL
D15 W0/WREG W1 W2 W3 W4 DSP Operand Registers W5 W6 W7 W8 DSP Address Registers W9 W10 W11 W12/DSP Offset W13/DSP Write Back W14/Frame Pointer W15/Stack Pointer Working Registers
DO Shadow
D0
PUSH.S Shadow
Legend
SPLIM AD39 DSP Accumulators PC22 AccA AccB PC0 0 7 TABPAG TBLPAG 7 PSVPAG 0 Program Space Visibility Page Address 15 RCOUNT 15 DCOUNT 22 DOSTART 22 DOEND 15 CORCON 0 0 0 0 0 Data Table Page Address AD31
Stack Pointer Limit Register AD15 AD0
Program Counter
REPEAT Loop Counter
DO Loop Counter
DO Loop Start Address
DO Loop End Address
Core Configuration Register
OA
OB
SA
SB OAB SAB DA SRH
DC IPL2 IPL1 IPL0 RA
N
OV
Z
C
STATUS Register
SRL
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dsPIC30F1010/202X
2.3 Divide Support
The dsPIC DSC devices feature a 16/16-bit signed fractional divide operation, as well as 32/16-bit and 16/ 16-bit signed and unsigned integer divide operations, in the form of single instruction iterative divides. The following instructions and data sizes are supported: 1. 2. 3. 4. 5. DIVF - 16/16 signed fractional divide DIV.sd - 32/16 signed divide DIV.ud - 32/16 unsigned divide DIV.sw - 16/16 signed divide DIV.uw - 16/16 unsigned divide The divide instructions must be executed within a REPEAT loop. Any other form of execution (e.g. a series of discrete divide instructions) will not function correctly because the instruction flow depends on RCOUNT. The divide instruction does not automatically set up the RCOUNT value, and it must, therefore, be explicitly and correctly specified in the REPEAT instruction, as shown in Table 2-1 (REPEAT will execute the target instruction {operand value + 1} times). The REPEAT loop count must be set up for 18 iterations of the DIV/DIVF instruction. Thus, a complete divide operation requires 19 cycles. Note: The Divide flow is interruptible. However, the user needs to save the context as appropriate.
The 16/16 divides are similar to the 32/16 (same number of iterations), but the dividend is either zero-extended or sign-extended during the first iteration.
TABLE 2-1:
DIVF DIV.sd
DIVIDE INSTRUCTIONS
Instruction Function Signed fractional divide: Wm/Wn W0; Rem W1 Signed divide: (Wm + 1:Wm)/Wn W0; Rem W1 Signed divide: Wm / Wn W0; Rem W1 Unsigned divide: (Wm + 1:Wm)/Wn W0; Rem W1 Unsigned divide: Wm / Wn W0; Rem W1
DIV.sw (or DIV.s) DIV.ud DIV.uw (or DIV.u)
DS70178A-page 24
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2.4 DSP Engine
The DSP engine consists of a high speed 17-bit x 17-bit multiplier, a barrel shifter, and a 40-bit adder/subtracter (with two target accumulators, round and saturation logic). The DSP engine also has the capability to perform inherent accumulator-to-accumulator operations, which require no additional data. These instructions are ADD, SUB and NEG. The DSP engine has various options selected through various bits in the CPU Core Configuration Register (CORCON), as listed below: 1. 2. 3. 4. 5. 6. 7. Fractional or integer DSP multiply (IF). Signed or unsigned DSP multiply (US). Conventional or convergent rounding (RND). Automatic saturation on/off for AccA (SATA). Automatic saturation on/off for AccB (SATB). Automatic saturation on/off for writes to data memory (SATDW). Accumulator Saturation mode selection (ACCSAT). Note: For CORCON layout, see Table 3-3.
A block diagram of the DSP engine is shown in Figure 2-2.
TABLE 2-2:
DSP INSTRUCTION SUMMARY
Algebraic Operation A=0 A = (x - y)2 A = A + (x - A = A + x2 No change in A A=x*y A=-x*y A=A-x*y y)2 A = A + (x * y) ACC WB? Yes No No Yes No Yes No No Yes CLR ED EDAC MAC MAC
Instruction
MOVSAC MPY MPY.N MSC
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dsPIC30F1010/202X
FIGURE 2-2: DSP ENGINE BLOCK DIAGRAM
40
40-bit Accumulator A 40-bit Accumulator B Saturate Adder Negate 40
Carry/Borrow Out Carry/Borrow In
S a 40 Round t 16 u Logic r a t e
40
40 Barrel Shifter
16
40
Sign-Extend
Y Data Bus
32 Zero Backfill 33 32
16
17-bit Multiplier/Scaler 16 16
To/From W Array
DS70178A-page 26
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X Data Bus
dsPIC30F1010/202X
2.4.1 MULTIPLIER 2.4.2.1
The 17x17-bit multiplier is capable of signed or unsigned operation and can multiplex its output using a scaler to support either 1.31 fractional (Q31) or 32-bit integer results. Unsigned operands are zero-extended into the 17th bit of the multiplier input value. Signed operands are sign-extended into the 17th bit of the multiplier input value. The output of the 17x17-bit multiplier/ scaler is a 33-bit value, which is sign-extended to 40 bits. Integer data is inherently represented as a signed two's complement value, where the MSB is defined as a sign bit. Generally speaking, the range of an N-bit two's complement integer is -2N-1 to 2N-1 - 1. For a 16bit integer, the data range is -32768 (0x8000) to 32767 (0x7FFF), including 0. For a 32-bit integer, the data range is -2,147,483,648 (0x8000 0000) to 2,147,483,645 (0x7FFF FFFF). When the multiplier is configured for fractional multiplication, the data is represented as a two's complement fraction, where the MSB is defined as a sign bit and the radix point is implied to lie just after the sign bit (QX format). The range of an N-bit two's complement fraction with this implied radix point is -1.0 to (1-21-N). For a 16-bit fraction, the Q15 data range is -1.0 (0x8000) to 0.999969482 (0x7FFF), including 0, and has a precision of 3.01518x10-5. In Fractional mode, a 16x16 multiply operation generates a 1.31 product, which has a precision of 4.65661x10-10. The same multiplier is used to support the MCU multiply instructions, which include integer 16-bit signed, unsigned and mixed sign multiplies. The MUL instruction may be directed to use byte or word sized operands. Byte operands will direct a 16-bit result, and word operands will direct a 32-bit result to the specified register(s) in the W array.
Adder/Subtracter, Overflow and Saturation
The adder/subtracter is a 40-bit adder with an optional zero input into one side and either true or complement data into the other input. In the case of addition, the carry/borrow input is active high and the other input is true data (not complemented), whereas in the case of subtraction, the carry/borrow input is active low and the other input is complemented. The adder/subtracter generates overflow Status bits SA/SB and OA/OB, which are latched and reflected in the STATUS register. * Overflow from bit 39: this is a catastrophic overflow in which the sign of the accumulator is destroyed. * Overflow into guard bits 32 through 39: this is a recoverable overflow. This bit is set whenever all the guard bits are not identical to each other. The adder has an additional saturation block which controls accumulator data saturation, if selected. It uses the result of the adder, the overflow Status bits described above, and the SATA/B (CORCON<7:6>) and ACCSAT (CORCON<4>) mode control bits to determine when and to what value to saturate. Six STATUS register bits have been provided to support saturation and overflow; they are: 1. 2. 3. OA: AccA overflowed into guard bits OB: AccB overflowed into guard bits SA: AccA saturated (bit 31 overflow and saturation) or AccA overflowed into guard bits and saturated (bit 39 overflow and saturation) SB: AccB saturated (bit 31 overflow and saturation) or AccB overflowed into guard bits and saturated (bit 39 overflow and saturation) OAB: Logical OR of OA and OB SAB: Logical OR of SA and SB
2.4.2
DATA ACCUMULATORS AND ADDER/SUBTRACTER
4.
The data accumulator consists of a 40-bit adder/ subtracter with automatic sign extension logic. It can select one of two accumulators (A or B) as its preaccumulation source and post-accumulation destination. For the ADD and LAC instructions, the data to be accumulated or loaded can be optionally scaled via the barrel shifter, prior to accumulation.
5. 6.
The OA and OB bits are modified each time data passes through the adder/subtracter. When set, they indicate that the most recent operation has overflowed into the accumulator guard bits (bits 32 through 39). The OA and OB bits can also optionally generate an arithmetic warning trap when set and the corresponding overflow trap flag enable bit (OVATEN, OVBTEN) in the INTCON1 register (refer to Section 5.0 "Interrupts") is set. This allows the user to take immediate action, for example, to correct system gain.
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The SA and SB bits are modified each time data passes through the adder/subtracter, but can only be cleared by the user. When set, they indicate that the accumulator has overflowed its maximum range (bit 31 for 32-bit saturation, or bit 39 for 40-bit saturation) and will be saturated (if saturation is enabled). When saturation is not enabled, SA and SB default to bit 39 overflow and thus indicate that a catastrophic overflow has occurred. If the COVTE bit in the INTCON1 register is set, SA and SB bits will generate an arithmetic warning trap when saturation is disabled. The overflow and saturation Status bits can optionally be viewed in the STATUS Register (SR) as the logical OR of OA and OB (in bit OAB) and the logical OR of SA and SB (in bit SAB). This allows programmers to check one bit in the STATUS Register to determine if either accumulator has overflowed, or one bit to determine if either accumulator has saturated. This is useful for complex number arithmetic, which typically uses both the accumulators. The device supports three Saturation and Overflow modes. 1. Bit 39 Overflow and Saturation: When bit 39 overflow and saturation occurs, the saturation logic loads the maximally positive 9.31 (0x7FFFFFFFFF) or maximally negative 9.31 value (0x8000000000) into the target accumulator. The SA or SB bit is set and remains set until cleared by the user. This is referred to as `super saturation' and provides protection against erroneous data or unexpected algorithm problems (e.g., gain calculations). Bit 31 Overflow and Saturation: When bit 31 overflow and saturation occurs, the saturation logic then loads the maximally positive 1.31 value (0x007FFFFFFF) or maximally negative 1.31 value (0x0080000000) into the target accumulator. The SA or SB bit is set and remains set until cleared by the user. When this Saturation mode is in effect, the guard bits are not used (so the OA, OB or OAB bits are never set). Bit 39 Catastrophic Overflow The bit 39 overflow Status bit from the adder is used to set the SA or SB bit, which remain set until cleared by the user. No saturation operation is performed and the accumulator is allowed to overflow (destroying its sign). If the COVTE bit in the INTCON1 register is set, a catastrophic overflow can initiate a trap exception.
2.4.2.2
Accumulator `Write Back'
The MAC class of instructions (with the exception of MPY, MPY.N, ED and EDAC) can optionally write a rounded version of the high word (bits 31 through 16) of the accumulator that is not targeted by the instruction into data space memory. The write is performed across the X bus into combined X and Y address space. The following addressing modes are supported: 1. W13, Register Direct: The rounded contents of the non-target accumulator are written into W13 as a 1.15 fraction. [W13] + = 2, Register Indirect with Post-Increment: The rounded contents of the non-target accumulator are written into the address pointed to by W13 as a 1.15 fraction. W13 is then incremented by 2 (for a word write).
2.
2.4.2.3
Round Logic
The round logic is a combinational block, which performs a conventional (biased) or convergent (unbiased) round function during an accumulator write (store). The Round mode is determined by the state of the RND bit in the CORCON register. It generates a 16-bit, 1.15 data value which is passed to the data space write saturation logic. If rounding is not indicated by the instruction, a truncated 1.15 data value is stored and the least significant word (lsw) is simply discarded. Conventional rounding takes bit 15 of the accumulator, zero-extends it and adds it to the ACCxH word (bits 16 through 31 of the accumulator). If the ACCxL word (bits 0 through 15 of the accumulator) is between 0x8000 and 0xFFFF (0x8000 included), ACCxH is incremented. If ACCxL is between 0x0000 and 0x7FFF, ACCxH is left unchanged. A consequence of this algorithm is that over a succession of random rounding operations, the value will tend to be biased slightly positive. Convergent (or unbiased) rounding operates in the same manner as conventional rounding, except when ACCxL equals 0x8000. If this is the case, the LSb (bit 16 of the accumulator) of ACCxH is examined. If it is `1', ACCxH is incremented. If it is `0', ACCxH is not modified. Assuming that bit 16 is effectively random in nature, this scheme will remove any rounding bias that may accumulate. The SAC and SAC.R instructions store either a truncated (SAC) or rounded (SAC.R) version of the contents of the target accumulator to data memory, via the X bus (subject to data saturation, see Section 2.4.2.4 "Data Space Write Saturation"). Note that for the MAC class of instructions, the accumulator write back operation will function in the same manner, addressing combined MCU (X and Y) data space though the X bus. For this class of instructions, the data is always subject to rounding.
2.
3.
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2.4.2.4 Data Space Write Saturation 2.4.3 BARREL SHIFTER
In addition to adder/subtracter saturation, writes to data space may also be saturated, but without affecting the contents of the source accumulator. The data space write saturation logic block accepts a 16-bit, 1.15 fractional value from the round logic block as its input, together with overflow status from the original source (accumulator) and the 16-bit round adder. These are combined and used to select the appropriate 1.15 fractional value as output to write to data space memory. If the SATDW bit in the CORCON register is set, data (after rounding or truncation) is tested for overflow and adjusted accordingly. For input data greater than 0x007FFF, data written to memory is forced to the maximum positive 1.15 value, 0x7FFF. For input data less than 0xFF8000, data written to memory is forced to the maximum negative 1.15 value, 0x8000. The MSb of the source (bit 39) is used to determine the sign of the operand being tested. If the SATDW bit in the CORCON register is not set, the input data is always passed through unmodified under all conditions. The barrel shifter is capable of performing up to 15-bit arithmetic or logic right shifts, or up to 16-bit left shifts in a single cycle. The source can be either of the two DSP accumulators or the X bus (to support multi-bit shifts of register or memory data). The shifter requires a signed binary value to determine both the magnitude (number of bits) and direction of the shift operation. A positive value will shift the operand right. A negative value will shift the operand left. A value of `0' will not modify the operand. The barrel shifter is 40 bits wide, thereby obtaining a 40-bit result for DSP shift operations and a 16-bit result for MCU shift operations. Data from the X bus is presented to the barrel shifter between bit positions 16 to 31 for right shifts, and bit positions 0 to 15 for left shifts.
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NOTES:
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3.0 MEMORY ORGANIZATION
FIGURE 3-1:
Note: This data sheet summarizes features of this group of dsPIC30F devices and is not intended to be a complete reference source. For more information on the CPU, peripherals, register descriptions and general device functionality, refer to the "dsPIC30F Family Reference Manual" (DS70046). For more information on the device instruction set and programming, refer to the "dsPIC30F/ 33F Programmer's Reference Manual" (DS70157).
PROGRAM SPACE MEMORY MAP FOR dsPIC30F1010/ 202X
Reset - GOTO Instruction Reset - Target Address Reserved Ext. Osc. Fail Trap Address Error Trap Stack Error Trap Arithmetic Warn. Trap Reserved Reserved Reserved Vector 0 Vector 1 000000 000002 000004
Vector Tables
3.1
Program Address Space
User Memory Space
The program address space is 4M instruction words. It is addressable by a 24-bit value from either the 23-bit PC, table instruction Effective Address (EA), or data space EA, when program space is mapped into data space, as defined by Table 3-1. Note that the program space address is incremented by two between successive program words, in order to provide compatibility with data space addressing. User program space access is restricted to the lower 4M instruction word address range (0x000000 to 0x7FFFFE), for all accesses other than TBLRD/TBLWT, which use TBLPAG<7> to determine user or configuration space access. In Table 3-1, Read/Write instructions, bit 23 allows access to the Device ID, the User ID and the Configuration bits. Otherwise, bit 23 is always clear. Note: The address map shown in Figure 3-1 is conceptual, and the actual memory configuration may vary across individual devices depending on available memory.
000014
Vector 52 Vector 53 Alternate Vector Table User Flash Program Memory (4K instructions)
00007E 000080 0000FE 000100
001FFE 002000 Reserved (Read 0's) 7FFFFE 800000
Reserved
Configuration Memory Space
UNITID (32 instr.)
8005BE 8005C0 8005FE 800600
Reserved Device Configuration Registers F7FFFE F80000 F8000E F80010
Reserved
DEVID (2)
FEFFFE FF0000 FFFFFE
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TABLE 3-1: PROGRAM SPACE ADDRESS CONSTRUCTION
Access Space User User (TBLPAG<7> = 0) Configuration (TBLPAG<7> = 1) User Program Space Address <23> <22:16> <15> <14:1> 0 PC<22:1> TBLPAG<7:0> Data EA <15:0> TBLPAG<7:0> 0 PSVPAG<7:0> Data EA <15:0> Data EA <14:0> <0> 0 Access Type Instruction Access TBLRD/TBLWT TBLRD/TBLWT Program Space Visibility
FIGURE 3-2:
DATA ACCESS FROM PROGRAM SPACE ADDRESS GENERATION
23 bits Using Program Counter 0 Program Counter 0
Select Using Program Space Visibility
1
EA
0
PSVPAG Reg 8 bits 15 bits
EA Using Table Instruction 1/0 TBLPAG Reg 8 bits 16 bits
User/ Configuration Space Select
24-bit EA
Byte Select
Note: Program Space Visibility cannot be used to access bits <23:16> of a word in program memory.
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3.1.1 DATA ACCESS FROM PROGRAM MEMORY USING TABLE INSTRUCTIONS
A set of Table Instructions is provided to move byte or word sized data to and from program space. 1. TBLRDL: Table Read Low Word: Read the lsw of the program address; P<15:0> maps to D<15:0>. Byte: Read one of the LSBs of the program address; P<7:0> maps to the destination byte when byte select = 0; P<15:8> maps to the destination byte when byte select = 1. TBLWTL: Table Write Low (refer to Section 7.0 "Flash Program Memory" for details on Flash Programming). TBLRDH: Table Read High Word: Read the most significant word of the program address; P<23:16> maps to D<7:0>; D<15:8> always be = 0. Byte: Read one of the MSBs of the program address; P<23:16> maps to the destination byte when byte select = 0; The destination byte will always be = 0 when byte select = 1. TBLWTH: Table Write High (refer to Section 7.0 "Flash Program Memory" for details on Flash Programming).
This architecture fetches 24-bit wide program memory. Consequently, instructions are always aligned. However, as the architecture is modified Harvard, data can also be present in program space. There are two methods by which program space can be accessed; via special table instructions, or through the remapping of a 16K word program space page into the upper half of data space (see Section 3.1.2 "Data Access from Program Memory Using Program Space Visibility"). The TBLRDL and TBLWTL instructions offer a direct method of reading or writing the least significant word (lsw) of any address within program space, without going through data space. The TBLRDH and TBLWTH instructions are the only method whereby the upper 8 bits of a program space word can be accessed as data. The PC is incremented by two for each successive 24-bit program word. This allows program memory addresses to directly map to data space addresses. Program memory can thus be regarded as two 16-bit word wide address spaces, residing side by side, each with the same address range. TBLRDL and TBLWTL access the space which contains the Least Significant Data Word, and TBLRDH and TBLWTH access the space which contains the Most Significant Data Byte. Figure 3-2 shows how the EA is created for table operations and data space accesses (PSV = 1). Here, P<23:0> refers to a program space word, whereas D<15:0> refers to a data space word.
2.
3.
4.
FIGURE 3-3:
PROGRAM DATA TABLE ACCESS (LEAST SIGNIFICANT WORD)
PC Address 0x000000 0x000002 0x000004 0x000006 00000000 00000000 00000000 00000000 23 16 8 0
Program Memory `Phantom' Byte (Read as `0').
TBLRDL.W
TBLRDL.B (Wn<0> = 0) TBLRDL.B (Wn<0> = 1)
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FIGURE 3-4: PROGRAM DATA TABLE ACCESS (MOST SIGNIFICANT BYTE)
TBLRDH.W PC Address 0x000000 0x000002 0x000004 0x000006 00000000 00000000 00000000 00000000 TBLRDH.B (Wn<0> = 0) Program Memory `Phantom' Byte (Read as `0')
23
16
8
0
TBLRDH.B (Wn<0> = 1)
3.1.2
DATA ACCESS FROM PROGRAM MEMORY USING PROGRAM SPACE VISIBILITY
The upper 32 Kbytes of data space may optionally be mapped into any 16K word program space page. This provides transparent access of stored constant data from X data space, without the need to use special instructions (i.e., TBLRDL/H, TBLWTL/H instructions). Program space access through the data space occurs if the MSb of the data space EA is set and program space visibility is enabled, by setting the PSV bit in the Core Control register (CORCON). The functions of CORCON are discussed in Section 2.4 "DSP Engine". Data accesses to this area add an additional cycle to the instruction being executed, since two program memory fetches are required. Note that the upper half of addressable data space is always part of the X data space. Therefore, when a DSP operation uses program space mapping to access this memory region, Y data space should typically contain state (variable) data for DSP operations, whereas X data space should typically contain coefficient (constant) data. Although each data space address, 0x8000 and higher, maps directly into a corresponding program memory address (see Figure 3-5), only the lower 16-bits of the 24-bit program word are used to contain the data. The upper 8 bits should be programmed to force an illegal instruction to maintain machine robustness. Refer to the "dsPIC30F/33F Programmer's Reference Manual" (DS70157) for details on instruction encoding.
Note that by incrementing the PC by 2 for each program memory word, the Least Significant 15 bits of data space addresses directly map to the Least Significant 15 bits in the corresponding program space addresses. The remaining bits are provided by the Program Space Visibility Page register, PSVPAG<7:0>, as shown in Figure 3-5. Note: PSV access is temporarily disabled during Table Reads/Writes.
For instructions that use PSV which are executed outside a REPEAT loop: * The following instructions will require one instruction cycle in addition to the specified execution time: - MAC class of instructions with data operand prefetch - MOV instructions - MOV.D instructions * All other instructions will require two instruction cycles in addition to the specified execution time of the instruction. For instructions that use PSV which are executed inside a REPEAT loop: * The following instances will require two instruction cycles in addition to the specified execution time of the instruction: - Execution in the first iteration - Execution in the last iteration - Execution prior to exiting the loop due to an interrupt - Execution upon re-entering the loop after an interrupt is serviced * Any other iteration of the REPEAT loop will allow the instruction, accessing data using PSV, to execute in a single cycle.
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FIGURE 3-5: DATA SPACE WINDOW INTO PROGRAM SPACE OPERATION
Data Space 0x0000 15 PSVPAG(1) 0x00 8
Program Space 0x100100
EA<15> = 0
Data Space EA
16 15 EA<15> = 1 0x8000 Address 15 Concatenation 23 23 15 0 0x001200
Upper half of Data Space is mapped into Program Space 0xFFFF 0x001FFE
BSET MOV MOV MOV
CORCON,#2 #0x00, W0 W0, PSVPAG 0x9200, W0
; PSV bit set ; Set PSVPAG register ; Access program memory location ; using a data space access
Data Read
Note: PSVPAG is an 8-bit register, containing bits <22:15> of the program space address (i.e., it defines the page in program space to which the upper half of data space is being mapped).
3.2
Data Address Space
The core has two data spaces. The data spaces can be considered either separate (for some DSP instructions), or as one unified linear address range (for MCU instructions). The data spaces are accessed using two Address Generation Units (AGUs) and separate data paths.
3.2.1
DATA SPACE MEMORY MAP
The data space memory is split into two blocks, X and Y data space. A key element of this architecture is that Y space is a subset of X space, and is fully contained within X space. In order to provide an apparent linear addressing space, X and Y spaces have contiguous addresses.
When executing any instruction other than one of the MAC class of instructions, the X block consists of the 256 byte data address space (including all Y addresses). When executing one of the MAC class of instructions, the X block consists of the 256 bytes data address space excluding the Y address block (for data reads only). In other words, all other instructions regard the entire data memory as one composite address space. The MAC class instructions extract the Y address space from data space and address it using EAs sourced from W10 and W11. The remaining X data space is addressed using W8 and W9. Both address spaces are concurrently accessed only with the MAC class instructions. A data space memory map is shown in Figure 3-6.
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FIGURE 3-6: DATA SPACE MEMORY MAP
LSB Address LSB 0x0000 SFR Space 0x07FE 0x0800 X Data RAM (X) 256 bytes 512 bytes SRAM Space 0x08FF 0x0901 Y Data RAM (Y) 256 bytes 0x09FF 0x09FE 0x0A00 (See Note) 0x8001 0x8000 0x08FE 0x0900 2560 bytes Near Data Space
MSB Address MSB SFR Space (Note) 0x0001 0x07FF 0x0801
16 bits
X Data Unimplemented (X) Optionally Mapped into Program Memory
0xFFFF
0xFFFE
Note:
Unimplemented SFR or SRAM locations read as `0'.
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FIGURE 3-7: DATA SPACE FOR MCU AND DSP (MAC CLASS) INSTRUCTIONS
UNUSED
X SPACE
(Y SPACE)
Y SPACE
UNUSED
UNUSED
Non-MAC Class Ops (Read/Write) MAC Class Ops (Write) Indirect EA using any W
MAC Class Ops Read-Only
Indirect EA using W8, W9
Indirect EA using W10, W11
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X SPACE
X SPACE
SFR SPACE
SFR SPACE
dsPIC30F1010/202X
3.2.2 DATA SPACES 3.2.3 DATA SPACE WIDTH
The X data space is used by all instructions and supports all Addressing modes. There are separate read and write data buses. The X read data bus is the return data path for all instructions that view data space as combined X and Y address space. It is also the X address space data path for the dual operand read instructions (MAC class). The X write data bus is the only write path to data space for all instructions. The X data space also supports modulo addressing for all instructions, subject to Addressing mode restrictions. Bit-Reversed Addressing is only supported for writes to X data space. The Y data space is used in concert with the X data space by the MAC class of instructions (CLR, ED, EDAC, MAC, MOVSAC, MPY, MPY.N and MSC) to provide two concurrent data read paths. No writes occur across the Y bus. This class of instructions dedicates two W register pointers, W10 and W11, to always address Y data space, independent of X data space, whereas W8 and W9 always address X data space. Note that during accumulator write back, the data address space is considered a combination of X and Y data spaces, so the write occurs across the X bus. Consequently, the write can be to any address in the entire data space. The Y data space can only be used for the data prefetch operation associated with the MAC class of instructions. It also supports modulo addressing for automated circular buffers. Of course, all other instructions can access the Y data address space through the X data path, as part of the composite linear space. The boundary between the X and Y data spaces is defined as shown in Figure 3-6 and is not user programmable. Should an EA point to data outside its own assigned address space, or to a location outside physical memory, an all-zero word/byte will be returned. For example, although Y address space is visible by all non-MAC instructions using any Addressing mode, an attempt by a MAC instruction to fetch data from that space, using W8 or W9 (X space pointers), will return 0x0000. The core data width is 16 bits. All internal registers are organized as 16-bit wide words. Data space memory is organized in byte addressable, 16-bit wide blocks.
3.2.4
DATA ALIGNMENT
To help maintain backward compatibility with PICmicro(R) MCU devices and improve data space memory usage efficiency, the dsPIC30F instruction set supports both word and byte operations. Data is aligned in data memory and registers as words, but all data space EAs resolve to bytes. Data byte reads will read the complete word, which contains the byte, using the LSb of any EA to determine which byte to select. The selected byte is placed onto the LSB of the X data path (no byte accesses are possible from the Y data path as the MAC class of instruction can only fetch words). That is, data memory and registers are organized as two parallel byte-wide entities with shared (word) address decode, but separate write lines. Data byte writes only write to the corresponding side of the array or register which matches the byte address. As a consequence of this byte accessibility, all effective address calculations (including those generated by the DSP operations, which are restricted to word sized data) are internally scaled to step through word-aligned memory. For example, the core would recognize that Post-Modified Register Indirect Addressing mode, [Ws++], will result in a value of Ws + 1 for byte operations and Ws + 2 for word operations. All word accesses must be aligned to an even address. Misaligned word data fetches are not supported, so care must be taken when mixing byte and word operations, or translating from 8-bit MCU code. Should a misaligned read or write be attempted, an address error trap will be generated. If the error occurred on a read, the instruction underway is completed, whereas if it occurred on a write, the instruction will be executed but the write will not occur. In either case, a trap will then be executed, allowing the system and/or user to examine the machine state prior to execution of the address fault.
TABLE 3-2:
EFFECT OF INVALID MEMORY ACCESSES
Data Returned 0x0000 0x0000 0x0000
FIGURE 3-8:
15 0001 0003 0005 MSB Byte 1 Byte 3 Byte 5
DATA ALIGNMENT
87 LSB Byte 0 Byte 2 Byte 4 0 0000 0002 0004
Attempted Operation EA = an unimplemented address W8 or W9 used to access Y data space in a MAC instruction W10 or W11 used to access X data space in a MAC instruction
All effective addresses are 16 bits wide and point to bytes within the data space. Therefore, the data space address range is 64 Kbytes or 32K words.
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All byte loads into any W register are loaded into the LSB. The MSB is not modified. A Sign-Extend (SE) instruction is provided to allow users to translate 8-bit signed data to 16-bit signed values. Alternatively, for 16-bit unsigned data, users can clear the MSB of any W register by executing a Zero-Extend (ZE) instruction on the appropriate address. Although most instructions are capable of operating on word or byte data sizes, it should be noted that some instructions, including the DSP instructions, operate only on words. There is a Stack Pointer Limit register (SPLIM) associated with the Stack Pointer. SPLIM is uninitialized at Reset. As is the case for the Stack Pointer, SPLIM<0> is forced to `0', because all stack operations must be word-aligned. Whenever an Effective Address (EA) is generated using W15 as a source or destination pointer, the address thus generated is compared with the value in SPLIM. If the contents of the Stack Pointer (W15) and the SPLIM register are equal and a push operation is performed, a stack error trap will not occur. The stack error trap will occur on a subsequent push operation. Thus, for example, if it is desirable to cause a stack error trap when the stack grows beyond address 0x2000 in RAM, initialize the SPLIM with the value, 0x1FFE. Similarly, a Stack Pointer Underflow (stack error) trap is generated when the Stack Pointer address is found to be less than 0x0800, thus preventing the stack from interfering with the Special Function Register (SFR) space. A write to the SPLIM register should not be immediately followed by an indirect read operation using W15.
3.2.5
NEAR DATA SPACE
An 8 Kbyte `near' data space is reserved in X address memory space between 0x0000 and 0x1FFF, which is directly addressable via a 13-bit absolute address field within all memory direct instructions. The remaining X address space and all of the Y address space is addressable indirectly. Additionally, the whole of X data space is addressable using MOV instructions, which support memory direct addressing with a 16-bit address field.
FIGURE 3-9: 3.2.6 SOFTWARE STACK
The dsPIC DSC device contains a software stack. W15 is used as the Stack Pointer. The Stack Pointer always points to the first available free word and grows from lower addresses towards higher addresses. It pre-decrements for stack pops and post-increments for stack pushes, as shown in Figure 3-9. Note that for a PC push during any CALL instruction, the MSB of the PC is zero-extended before the push, ensuring that the MSB is always clear. Note: A PC push during exception processing will concatenate the SRL register to the MSB of the PC prior to the push.
0x0000 15
CALL STACK FRAME
0
Stack Grows Towards Higher Address
PC<15:0> 000000000 PC<22:16>
W15 (before CALL) W15 (after CALL) POP: [--W15] PUSH: [W15++]
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TABLE 3-3:
Bit 14 W0 / WREG W1 W2 W3 W4 W5 W6 W7 W8 W9 W10 W11 W12 W13 W14 W15 SPLIM ACCAL ACCAH Sign-Extension (ACCA<39>) ACCBL ACCBH Sign-Extension (ACCB<39>) PCL -- -- -- -- -- -- -- -- -- RCOUNT DCOUNT DOSTARTL -- -- -- -- -- -- -- DOENDL -- OB -- -- US EDT SA SB OAB -- -- -- -- SAB DL2 -- DA DL1 -- DC DL0 -- IPL2 SATA IPL1 SATB IPL0 SATDW RA ACCSAT DOENDH N IPL3 OV PSV Z RND C IF -- DOSTARTH 0 0 -- -- -- -- -- -- -- -- -- -- -- -- -- PCH TBLPAG PSVPAG ACCBU ACCAU Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Reset State 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 1000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 uuuu uuuu uuuu uuuu uuuu uuuu uuuu uuuu uuuu uuuu uuuu uuu0 0000 0000 0uuu uuuu uuuu uuuu uuuu uuu0 0000 0000 0uuu uuuu 0000 0000 0000 0000 0000 0000 0010 0000
CORE REGISTER MAP
SFR Name
Addr.
Bit 15
W0
0000
W1
0002
DS70178A-page 40
W2
0004
W3
0006
W4
0008
W5
000A
W6
000C
W7
000E
W8
0010
W9
0012
W10
0014
W11
0016
W12
0018
W13
001A
dsPIC30F1010/202X
W14
001C
W15
001E
SPLIM
0020
ACCAL
0022
ACCAH
0024
ACCAU
0026
ACCBL
0028
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ACCBH
002A
ACCBU
002C
PCL
002E
PCH
0030
--
TBLPAG
0032
--
PSVPAG
0034
--
RCOUNT
0036
DCOUNT
0038
DOSTARTL
003A
DOSTARTH
003C
--
DOENDL
003E
DOENDH
0040
--
SR
0042
OA
CORCON
0044
--
(c) 2006 Microchip Technology Inc.
Legend:
u = uninitialized bit
TABLE 3-3:
Bit 14 -- XS<15:1> XE<15:1> YS<15:1> YE<15:1> XB<14:0> -- DISICNT<13:0> 1 0 1 0 -- BWM<3:0> YWM<3:0> XWM<3:0> Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Reset State
CORE REGISTER MAP (CONTINUED)
0000 0000 0000 0000 uuuu uuuu uuuu uuu0 uuuu uuuu uuuu uuu1 uuuu uuuu uuuu uuu0 uuuu uuuu uuuu uuu1 uuuu uuuu uuuu uuuu 0000 0000 0000 0000
SFR Name
Addr.
Bit 15
MODCON
0046
XMODEN
YMODEN
XMODSRT
0048
XMODEND
004A
YMODSRT
004C
YMODEND
004E
XBREV
0050
BREN
DISICNT
0052
--
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Legend:
u = uninitialized bit
Note: Refer to the "dsPIC30F Family Reference Manual" (DS70046) for descriptions of register bit fields.
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NOTES:
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4.0 ADDRESS GENERATOR UNITS
4.1 Instruction Addressing Modes
Note: This data sheet summarizes features of this group of dsPIC30F devices and is not intended to be a complete reference source. For more information on the CPU, peripherals, register descriptions and general device functionality, refer to the "dsPIC30F Family Reference Manual" (DS70046). For more information on the device instruction set and programming, refer to the "dsPIC30F/ 33F Programmer's Reference Manual" (DS70157).
The Addressing modes in Table 4-1 form the basis of the Addressing modes optimized to support the specific features of individual instructions. The Addressing modes provided in the MAC class of instructions are somewhat different from those in the other instruction types.
The dsPIC DSC core contains two independent address generator units: the X AGU and Y AGU. The Y AGU supports word sized data reads for the DSP MAC class of instructions only. The dsPIC DSC AGUs support three types of data addressing: * Linear Addressing * Modulo (Circular) Addressing * Bit-Reversed Addressing Linear and Modulo Data Addressing modes can be applied to data space or program space. Bit-Reversed Addressing is only applicable to data space addresses.
4.1.1
FILE REGISTER INSTRUCTIONS
Most file register instructions use a 13-bit address field (f) to directly address data present in the first 8192 bytes of data memory (near data space). Most file register instructions employ a working register, W0, which is denoted as WREG in these instructions. The destination is typically either the same file register, or WREG (with the exception of the MUL instruction), which writes the result to a register or register pair. The MOV instruction allows additional flexibility and can access the entire data space.
TABLE 4-1:
FUNDAMENTAL ADDRESSING MODES SUPPORTED
Description The address of the file register is specified explicitly. The contents of a register are accessed directly. The contents of Wn forms the EA. The contents of Wn forms the EA. Wn is post-modified (incremented or decremented) by a constant value. Wn is pre-modified (incremented or decremented) by a signed constant value to form the EA. The sum of Wn and a literal forms the EA.
Addressing Mode File Register Direct Register Direct Register Indirect Register Indirect Post-modified Register Indirect Pre-modified
Register Indirect with Register Offset The sum of Wn and Wb forms the EA. Register Indirect with Literal Offset
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4.1.2 MCU INSTRUCTIONS 4.1.4 MAC INSTRUCTIONS
The three-operand MCU instructions are of the form: Operand 3 = Operand 1 Operand 2 where Operand 1 is always a working register (i.e., the Addressing mode can only be register direct), which is referred to as Wb. Operand 2 can be a W register, fetched from data memory, or a 5-bit literal. The result location can be either a W register or an address location. The following Addressing modes are supported by MCU instructions: * * * * * Register Direct Register Indirect Register Indirect Post-modified Register Indirect Pre-modified 5-bit or 10-bit Literal Note: Not all instructions support all the Addressing modes given above. Individual instructions may support different subsets of these Addressing modes. The dual source operand DSP instructions (CLR, ED, EDAC, MAC, MPY, MPY.N, MOVSAC and MSC), also referred to as MAC instructions, utilize a simplified set of Addressing modes to allow the user to effectively manipulate the data pointers through register indirect tables. The two source operand prefetch registers must be a member of the set {W8, W9, W10, W11}. For data reads, W8 and W9 will always be directed to the X RAGU and W10 and W11 will always be directed to the Y AGU. The effective addresses generated (before and after modification) must, therefore, be valid addresses within X data space for W8 and W9 and Y data space for W10 and W11. Note: Register Indirect with Register Offset Addressing is only available for W9 (in X space) and W11 (in Y space).
In summary, the following Addressing modes are supported by the MAC class of instructions: * * * * * Register Indirect Register Indirect Post-modified by 2 Register Indirect Post-modified by 4 Register Indirect Post-modified by 6 Register Indirect with Register Offset (Indexed)
4.1.3
MOVE AND ACCUMULATOR INSTRUCTIONS
Move instructions and the DSP Accumulator class of instructions provide a greater degree of addressing flexibility than other instructions. In addition to the Addressing modes supported by most MCU instructions, move and accumulator instructions also support Register Indirect with Register Offset Addressing mode, also referred to as Register Indexed mode. Note: For the MOV instructions, the Addressing mode specified in the instruction can differ for the source and destination EA. However, the 4-bit Wb (Register Offset) field is shared between both source and destination (but typically only used by one).
4.1.5
OTHER INSTRUCTIONS
Besides the various Addressing modes outlined above, some instructions use literal constants of various sizes. For example, BRA (branch) instructions use 16-bit signed literals to specify the branch destination directly, whereas the DISI instruction uses a 14-bit unsigned literal field. In some instructions, such as ADD Acc, the source of an operand or result is implied by the opcode itself. Certain operations, such as NOP, do not have any operands.
In summary, the following Addressing modes are supported by move and accumulator instructions: * * * * * * * * Register Direct Register Indirect Register Indirect Post-modified Register Indirect Pre-modified Register Indirect with Register Offset (Indexed) Register Indirect with Literal Offset 8-bit Literal 16-bit Literal Note: Not all instructions support all the Addressing modes given above. Individual instructions may support different subsets of these Addressing modes.
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4.2 Modulo Addressing
4.2.1 START AND END ADDRESS
Modulo addressing is a method of providing an automated means to support circular data buffers using hardware. The objective is to remove the need for software to perform data address boundary checks when executing tightly looped code, as is typical in many DSP algorithms. Modulo addressing can operate in either data or program space (since the data pointer mechanism is essentially the same for both). One circular buffer can be supported in each of the X (which also provides the pointers into program space) and Y data spaces. Modulo addressing can operate on any W register pointer. However, it is not advisable to use W14 or W15 for modulo addressing, since these two registers are used as the Stack Frame Pointer and Stack Pointer, respectively. In general, any particular circular buffer can only be configured to operate in one direction, as there are certain restrictions on the buffer start address (for incrementing buffers) or end address (for decrementing buffers) based upon the direction of the buffer. The only exception to the usage restrictions is for buffers which have a power-of-2 length. As these buffers satisfy the start and end address criteria, they may operate in a Bidirectional mode, (i.e., address boundary checks will be performed on both the lower and upper address boundaries). The modulo addressing scheme requires that a starting and an end address be specified and loaded into the 16-bit modulo buffer address registers: XMODSRT, XMODEND, YMODSRT and YMODEND (see Table 3-3). Note: Y-space modulo addressing EA calculations assume word sized data (LSb of every EA is always clear).
The length of a circular buffer is not directly specified. It is determined by the difference between the corresponding start and end addresses. The maximum possible length of the circular buffer is 32K words (64 Kbytes).
4.2.2
W ADDRESS REGISTER SELECTION
The Modulo and Bit-Reversed Addressing Control register MODCON<15:0> contains enable flags as well as a W register field to specify the W address registers. The XWM and YWM fields select which registers will operate with modulo addressing. If XWM = 15, X RAGU and X WAGU modulo addressing are disabled. Similarly, if YWM = 15, Y AGU modulo addressing is disabled. The X Address Space Pointer W register (XWM) to which modulo addressing is to be applied, is stored in MODCON<3:0> (see Table 3-3). Modulo addressing is enabled for X data space when XWM is set to any value other than 15 and the XMODEN bit is set at MODCON<15>. The Y Address Space Pointer W register (YWM) to which modulo addressing is to be applied, is stored in MODCON<7:4>. Modulo addressing is enabled for Y data space when YWM is set to any value other than 15 and the YMODEN bit is set at MODCON<14>.
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FIGURE 4-1:
Byte Address
MODULO ADDRESSING OPERATION EXAMPLE
0x1100
MOV MOV MOV MOV MOV MOV MOV MOV DO MOV AGAIN:
#0x1100,W0 W0, XMODSRT #0x1163,W0 W0,MODEND #0x8001,W0 W0,MODCON #0x0000,W0 #0x1110,W1 AGAIN,#0x31 W0, [W1++] INC W0,W0
;set modulo start address ;set modulo end address ;enable W1, X AGU for modulo ;W0 holds buffer fill value ;point W1 to buffer ;fill the 50 buffer locations ;fill the next location ;increment the fill value
0x1163
Start Addr = 0x1100 End Addr = 0x1163 Length = 0x0032 words
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4.2.3 MODULO ADDRESSING APPLICABILITY
Modulo addressing can be applied to the Effective Address (EA) calculation associated with any W register. It is important to realize that the address boundaries check for addresses less than or greater than the upper (for incrementing buffers) and lower (for decrementing buffers) boundary addresses (not just equal to). Address changes may, therefore, jump beyond boundaries and still be adjusted correctly. Note: The modulo corrected effective address is written back to the register only when PreModify or Post-Modify Addressing mode is used to compute the Effective Address. When an address offset (e.g., [W7 + W2]) is used, modulo address correction is performed, but the contents of the register remains unchanged. If the length of a bit-reversed buffer is M = 2N bytes, then the last `N' bits of the data buffer start address must be zeros. XB<14:0> is the bit-reversed address modifier or `pivot point' which is typically a constant. In the case of an FFT computation, its value is equal to half of the FFT data buffer size. Note: All Bit-Reversed EA calculations assume word sized data (LSb of every EA is always clear). The XB value is scaled accordingly to generate compatible (byte) addresses.
4.3
Bit-Reversed Addressing
Bit-Reversed Addressing is intended to simplify data re-ordering for radix-2 FFT algorithms. It is supported by the X AGU for data writes only. The modifier, which may be a constant value or register contents, is regarded as having its bit order reversed. The address source and destination are kept in normal order. Thus, the only operand requiring reversal is the modifier.
When enabled, Bit-Reversed Addressing will only be executed for register indirect with pre-increment or post-increment addressing and word sized data writes. It will not function for any other Addressing mode or for byte sized data, and normal addresses will be generated instead. When Bit-Reversed Addressing is active, the W Address Pointer will always be added to the address modifier (XB) and the offset associated with the register Indirect Addressing mode will be ignored. In addition, as word sized data is a requirement, the LSb of the EA is ignored (and always clear). Note: Modulo addressing and Bit-Reversed Addressing should not be enabled together. In the event that the user attempts to do this, Bit-Reversed Addressing will assume priority when active for the X WAGU, and X WAGU modulo addressing will be disabled. However, modulo addressing will continue to function in the X RAGU.
4.3.1
BIT-REVERSED ADDRESSING IMPLEMENTATION
Bit-Reversed Addressing is enabled when: 1. BWM (W register selection) in the MODCON register is any value other than 15 (the stack can not be accessed using Bit-Reversed Addressing) and the BREN bit is set in the XBREV register and the Addressing mode used is Register Indirect with Pre-Increment or Post-Increment.
If Bit-Reversed Addressing has already been enabled by setting the BREN (XBREV<15>) bit, then a write to the XBREV register should not be immediately followed by an indirect read operation using the W register that has been designated as the bit-reversed pointer.
2. 3.
FIGURE 4-2:
BIT-REVERSED ADDRESS EXAMPLE
Sequential Address
b15 b14 b13 b12 b11 b10 b9 b8
b7 b6 b5 b4
b3 b2 b1
0 Bit Locations Swapped Left-to-Right Around Center of Binary Value
b15 b14 b13 b12 b11 b10 b9 b8
b7 b6 b5 b1
b2 b3 b4
0
Bit-Reversed Address Pivot Point XB = 0x0008 for a 16 word Bit-Reversed Buffer
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TABLE 4-2: BIT-REVERSED ADDRESS SEQUENCE (16-ENTRY)
Normal Address A3 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 A2 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 A1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 A0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 Decimal 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 A3 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 A2 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 Bit-Reversed Address A1 A0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 Decimal 0 8 4 12 2 10 6 14 1 9 5 13 3 11 7 15
TABLE 4-3:
BIT-REVERSED ADDRESS MODIFIER VALUES FOR XBREV REGISTER
Buffer Size (Words) 32768 16384 8192 4096 2048 1024 512 256 128 64 32 16 8 4 2 XB<14:0> Bit-Reversed Address Modifier Value(1) 0x4000 0x2000 0x1000 0x0800 0x0400 0x0200 0x0100 0x0080 0x0040 0x0020 0x0010 0x0008 0x0004 0x0002 0x0001
Note 1:
Modifier values greater than 256 words exceed the data memory available on the dsPIC30F1010/202X device
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5.0 INTERRUPTS
Note: This data sheet summarizes features of this group of dsPIC30F devices and is not intended to be a complete reference source. For more information on the CPU, peripherals, register descriptions and general device functionality, refer to the "dsPIC30F Family Reference Manual" (DS70046). For more information on the device instruction set and programming, refer to the "dsPIC30F/ 33F Programmer's Reference Manual" (DS70157).
* INTCON1<15:0>, INTCON2<15:0> Global interrupt control functions are derived from these two registers. INTCON1 contains the control and status flags for the processor exceptions. The INTCON2 register controls the external interrupt request signal behavior and the use of the alternate vector table. Note: Interrupt flag bits get set when an Interrupt condition occurs, regardless of the state of its corresponding enable bit. User software should ensure the appropriate interrupt flag bits are clear prior to enabling an interrupt.
The dsPIC30F1010/202X device has up to 35 interrupt sources and 4 processor exceptions (traps), which must be arbitrated based on a priority scheme. The CPU is responsible for reading the Interrupt Vector Table (IVT) and transferring the address contained in the interrupt vector to the Program Counter (PC). The interrupt vector is transferred from the program data bus into the Program Counter, via a 24-bit wide multiplexer on the input of the Program Counter. The Interrupt Vector Table and Alternate Interrupt Vector Table (AIVT) are placed near the beginning of program memory (0x000004). The IVT and AIVT are shown in Figure 5-1. The interrupt controller is responsible for preprocessing the interrupts and processor exceptions, prior to their being presented to the processor core. The peripheral interrupts and traps are enabled, prioritized and controlled using centralized special function registers: * IFS0<15:0>, IFS1<15:0>, IFS2<15:0> All interrupt request flags are maintained in these three registers. The flags are set by their respective peripherals or external signals, and they are cleared via software. * IEC0<15:0>, IEC1<15:0>, IEC2<15:0> All interrupt enable control bits are maintained in these three registers. These control bits are used to individually enable interrupts from the peripherals or external signals. * IPC0<15:0>... IPC11<7:0> The user-assignable priority level associated with each of these interrupts is held centrally in these twelve registers. * IPL<3:0> The current CPU priority level is explicitly stored in the IPL bits. IPL<3> is present in the CORCON register, whereas IPL<2:0> are present in the STATUS Register (SR) in the processor core.
All interrupt sources can be user assigned to one of 7 priority levels, 1 through 7, via the IPCx registers. Each interrupt source is associated with an interrupt vector, as shown in Figure 5-1. Levels 7 and 1 represent the highest and lowest maskable priorities, respectively. Note: Assigning a priority level of 0 to an interrupt source is equivalent to disabling that interrupt.
If the NSTDIS bit (INTCON1<15>) is set, nesting of interrupts is prevented. Thus, if an interrupt is currently being serviced, processing of a new interrupt is prevented, even if the new interrupt is of higher priority than the one currently being serviced. Note: The IPL bits become read-only whenever the NSTDIS bit has been set to `1'.
Certain interrupts have specialized control bits for features like edge or level triggered interrupts, interrupt-on-change, etc. Control of these features remains within the peripheral module that generates the interrupt. The DISI instruction can be used to disable the processing of interrupts of priorities 6 and lower for a certain number of instructions, during which the DISI bit (INTCON2<14>) remains set. When an interrupt is serviced, the PC is loaded with the address stored in the vector location in Program Memory that corresponds to the interrupt. There are 63 different vectors within the IVT (refer to Figure 5-1). These vectors are contained in locations 0x000004 through 0x0000FE of program memory (refer to Figure 5-1). These locations contain 24-bit addresses, and, in order to preserve robustness, an address error trap will take place should the PC attempt to fetch any of these words during normal execution. This prevents execution of random data as a result of accidentally decrementing a PC into vector space, accidentally mapping a data space address into vector space, or the PC rolling over to 0x000000 after reaching the end of implemented program memory space. Execution of a GOTO instruction to this vector space will also generate an address error trap.
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5.1 Interrupt Priority
TABLE 5-1:
INT Number
The user-assignable Interrupt Priority (IP<2:0>) bits for each individual interrupt source are located in the Least Significant 3 bits of each nibble, within the IPCx register(s). Bit 3 of each nibble is not used and is read as a `0'. These bits define the priority level assigned to a particular interrupt by the user. Note: The user selectable priority levels start at 0, as the lowest priority, and level 7, as the highest priority.
dsPIC30F1010/202X INTERRUPT VECTOR TABLE
Interrupt Source
Vector Number
Since more than one interrupt request source may be assigned to a specific user specified priority level, a means is provided to assign priority within a given level. This method is called "Natural Order Priority" and is final. Natural order priority is determined by the position of an interrupt in the vector table, and only affects interrupt operation when multiple interrupts with the same userassigned priority become pending at the same time. Table 5-1 lists the interrupt numbers and interrupt sources for the dsPIC DSC devices and their associated vector numbers. Note 1: The natural order priority scheme has 0 as the highest priority and 53 as the lowest priority. 2: The natural order priority number is the same as the INT number. The ability for the user to assign every interrupt to one of seven priority levels implies that the user can assign a very high overall priority level to an interrupt with a low natural order priority. The INT0 (external interrupt 0) may be assigned to priority level 1, thus giving it a very low effective priority.
Highest Natural Order Priority 0 8 INT0 - External Interrupt 0 1 9 IC1 - Input Capture 1 2 10 OC1 - Output Compare 1 3 11 T1 - Timer 1 4 12 Reserved 5 13 OC2 - Output Compare 2 6 14 T2 - Timer 2 7 15 T3 - Timer 3 8 16 SPI1 9 17 U1RX - UART1 Receiver 10 18 U1TX - UART1 Transmitter 11 19 ADC - ADC Convert Done 12 20 NVM - NVM Write Complete 13 21 SI2C - I2CTM Slave Event 14 22 MI2C - I2C Master Event 15 23 Reserved 16 24 INT1 - External Interrupt 1 17 25 INT2 - External Interrupt 2 18 26 PWM Special Event Trigger 19 27 PWM Gen#1 20 28 PWM Gen#2 21 29 PWM Gen#3 22 30 PWM Gen#4 23 31 Reserved 24 32 Reserved 25 33 Reserved 26 34 Reserved 27 35 ICN - Input Change Notification 28 36 Reserved 29 37 Analog Comparator 1 30 38 Analog Comparator 2 31 39 Analog Comparator 3 32 40 Analog Comparator 4 33 41 Reserved 34 42 Reserved 35 43 Reserved 36 44 Reserved 37 45 ADC Pair 0 Conversion Done 38 46 ADC Pair 1 Conversion Done 39 47 ADC Pair 2 Conversion Done 40 48 ADC Pair 3 Conversion Done 41 49 ADC Pair 4 Conversion Done 42 50 ADC Pair 5 Conversion Done 43 51 Reserved 44 52 Reserved 45-53 53-61 Reserved Lowest Natural Order Priority
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5.2 Reset Sequence 5.3 Traps
A Reset is not a true exception, because the interrupt controller is not involved in the Reset process. The processor initializes its registers in response to a Reset, which forces the PC to zero. The processor then begins program execution at location 0x000000. A GOTO instruction is stored in the first program memory location, immediately followed by the address target for the GOTO instruction. The processor executes the GOTO to the specified address and then begins operation at the specified target (start) address. Traps can be considered as non-maskable interrupts indicating a software or hardware error, which adhere to a predefined priority as shown in Figure 5-1. They are intended to provide the user a means to correct erroneous operation during debug and when operating within the application. Note: If the user does not intend to take corrective action in the event of a Trap Error condition, these vectors must be loaded with the address of a default handler that simply contains the RESET instruction. If, on the other hand, one of the vectors containing an invalid address is called, an address error trap is generated.
5.2.1
RESET SOURCES
In addition to External Reset and Power-on Reset (POR), there are 6 sources of error conditions which `trap' to the Reset vector. * Watchdog Time-out: The watchdog has timed out, indicating that the processor is no longer executing the correct flow of code. * Uninitialized W Register Trap: An attempt to use an uninitialized W register as an Address Pointer will cause a Reset. * Illegal Instruction Trap: Attempted execution of any unused opcodes will result in an illegal instruction trap. Note that a fetch of an illegal instruction does not result in an illegal instruction trap if that instruction is flushed prior to execution due to a flow change. * Trap Lockout: Occurrence of multiple Trap conditions simultaneously will cause a Reset.
Note that many of these trap conditions can only be detected when they occur. Consequently, the questionable instruction is allowed to complete prior to trap exception processing. If the user chooses to recover from the error, the result of the erroneous action that caused the trap may have to be corrected. There are 8 fixed priority levels for traps: Level 8 through Level 15, which implies that the IPL3 is always set during processing of a trap. If the user is not currently executing a trap, and he sets the IPL<3:0> bits to a value of `0111' (Level 7), then all interrupts are disabled, but traps can still be processed.
5.3.1
TRAP SOURCES
The following traps are provided with increasing priority. However, since all traps can be nested, priority has little effect.
Math Error Trap:
The Math Error trap executes under the following four circumstances: 1. Should an attempt be made to divide by zero, the divide operation will be aborted on a cycle boundary and the trap taken. If enabled, a Math Error trap will be taken when an arithmetic operation on either accumulator A or B causes an overflow from bit 31 and the accumulator guard bits are not utilized. If enabled, a Math Error trap will be taken when an arithmetic operation on either accumulator A or B causes a catastrophic overflow from bit 39 and all saturation is disabled. If the shift amount specified in a shift instruction is greater than the maximum allowed shift amount, a trap will occur.
2.
3.
4.
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Address Error Trap:
This trap is initiated when any of the following circumstances occurs: 1. 2. 3. 4. A misaligned data word access is attempted. A data fetch from our unimplemented data memory location is attempted. A data access of an unimplemented program memory location is attempted. An instruction fetch from vector space is attempted. Note: In the MAC class of instructions, wherein the data space is split into X and Y data space, unimplemented X space includes all of Y space, and unimplemented Y space includes all of X space.
5.3.2
HARD AND SOFT TRAPS
It is possible that multiple traps can become active within the same cycle (e.g., a misaligned word stack write to an overflowed address). In such a case, the fixed priority shown in Figure 5-1 is implemented, which may require the user to check if other traps are pending, in order to completely correct the fault. `Soft' traps include exceptions of priority level 8 through level 11, inclusive. The arithmetic error trap (level 11) falls into this category of traps. `Hard' traps include exceptions of priority level 12 through level 15, inclusive. The address error (level 12), stack error (level 13) and oscillator error (level 14) traps fall into this category. Each hard trap that occurs must be acknowledged before code execution of any type may continue. If a lower priority hard trap occurs while a higher priority trap is pending, acknowledged, or is being processed, a hard trap conflict will occur. The device is automatically Reset in a hard trap conflict condition. The TRAPR Status bit (RCON<15>) is set when the Reset occurs, so that the condition may be detected in software.
5.
6.
Execution of a "BRA #literal" instruction or a "GOTO #literal" instruction, where literal is an unimplemented program memory address. Executing instructions after modifying the PC to point to unimplemented program memory addresses. The PC may be modified by loading a value into the stack and executing a RETURN instruction.
Stack Error Trap:
This trap is initiated under the following conditions: 1. The Stack Pointer is loaded with a value which is greater than the (user programmable) limit value written into the SPLIM register (stack overflow). The Stack Pointer is loaded with a value which is less than 0x0800 (simple stack underflow).
FIGURE 5-1:
TRAP VECTORS
Reset - GOTO Instruction Reset - GOTO Address Reserved Oscillator Fail Trap Vector Address Error Trap Vector Stack Error Trap Vector Math Error Trap Vector Reserved Vector Reserved Vector Reserved Vector Interrupt 0 Vector Interrupt 1 Vector -- -- -- Interrupt 52 Vector Interrupt 53 Vector Reserved Reserved Reserved Oscillator Fail Trap Vector Stack Error Trap Vector Address Error Trap Vector Math Error Trap Vector Reserved Vector Reserved Vector Reserved Vector Interrupt 0 Vector Interrupt 1 Vector -- -- -- Interrupt 52 Vector Interrupt 53 Vector 0x000000 0x000002 0x000004
2.
Decreasing Priority
IVT
0x000014
Oscillator Fail Trap:
This trap is initiated if the external oscillator fails and operation becomes reliant on an internal RC backup.
0x00007E 0x000080 0x000082 0x000084
AIVT
0x000094
0x0000FE
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5.4 Interrupt Sequence 5.5 Alternate Vector Table
All interrupt event flags are sampled in the beginning of each instruction cycle by the IFSx registers. A pending interrupt request (IRQ) is indicated by the flag bit being equal to a `1' in an IFSx register. The IRQ will cause an interrupt to occur if the corresponding bit in the interrupt enable (IECx) register is set. For the remainder of the instruction cycle, the priorities of all pending interrupt requests are evaluated. If there is a pending IRQ with a priority level greater than the current processor priority level in the IPL bits, the processor will be interrupted. The processor then stacks the current Program Counter and the low byte of the processor STATUS Register (SRL), as shown in Figure 5-2. The low byte of the STATUS register contains the processor priority level at the time, prior to the beginning of the interrupt cycle. The processor then loads the priority level for this interrupt into the STATUS register. This action will disable all lower priority interrupts until the completion of the Interrupt Service Routine (ISR). In Program Memory, the IVT is followed by the AIVT, as shown in Figure 5-1. Access to the Alternate Vector Table is provided by the ALTIVT bit in the INTCON2 register. If the ALTIVT bit is set, all interrupt and exception processes will use the alternate vectors instead of the default vectors. The alternate vectors are organized in the same manner as the default vectors. The AIVT supports emulation and debugging efforts by providing a means to switch between an application and a support environment, without requiring the interrupt vectors to be reprogrammed. This feature also enables switching between applications for evaluation of different software algorithms at run time. If the AIVT is not required, the program memory allocated to the AIVT may be used for other purposes. AIVT is not a protected section and may be freely programmed by the user.
5.6
Fast Context Saving
FIGURE 5-2:
0x0000 15 Stack Grows Towards Higher Address
INTERRUPT STACK FRAME
0
A context saving option is available using shadow registers. Shadow registers are provided for the DC, N, OV, Z and C bits in SR, and the registers W0 through W3. The shadows are only one level deep. The shadow registers are accessible using the PUSH.S and POP.S instructions only. When the processor vectors to an interrupt, the PUSH.S instruction can be used to store the current value of the aforementioned registers into their respective shadow registers.
PC<15:0> SRL IPL3 PC<22:16>
W15 (before CALL) W15 (after CALL)
POP : [--W15] PUSH : [W15++]

If an ISR of a certain priority uses the PUSH.S and POP.S instructions for fast context saving, then a higher priority ISR should not include the same instructions. Users must save the key registers in software during a lower priority interrupt, if the higher priority ISR uses fast context saving.
Note 1: The user can always lower the priority level by writing a new value into SR. The Interrupt Service Routine must clear the interrupt flag bits in the IFSx register before lowering the processor interrupt priority, in order to avoid recursive interrupts. 2: The IPL3 bit (CORCON<3>) is always clear when interrupts are being processed. It is set only during execution of traps. The RETFIE (Return from Interrupt) instruction will unstack the Program Counter and status registers to return the processor to its state prior to the interrupt sequence.
5.7
External Interrupt Requests
The interrupt controller supports five external interrupt request signals, INT0-INT4. These inputs are edge sensitive; they require a low-to-high or a high-to-low transition to generate an interrupt request. The INTCON2 register has five bits, INT0EP-INT4EP, that select the polarity of the edge detection circuitry.
5.8
Wake-up from Sleep and Idle
The interrupt controller may be used to wake-up the processor from either Sleep or Idle modes, if Sleep or Idle mode is active when the interrupt is generated. If an enabled interrupt request of sufficient priority is received by the interrupt controller, then the standard interrupt request is presented to the processor. At the same time, the processor will wake-up from Sleep or Idle and begin execution of the Interrupt Service Routine needed to process the interrupt request.
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REGISTER 5-1:
R/W-0 NSTDIS bit 15 R/W-0 SFTACERR bit 7 Legend: R = Readable bit -n = Value at POR bit 15 W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown R/W-0 DIV0ERR U-0 -- R/W-0 MATHERR R/W-0 ADDRERR R/W-0 STKERR R/W-0 OSCFAIL U-0 -- bit 0
INTCON1: INTERRUPT CONTROL REGISTER 1
R/W-0 OVAERR R/W-0 OVBERR R/W-0 COVAERR R/W-0 COVBERR R/W-0 OVATE R/W-0 OVBTE R/W-0 COVTE bit 8
NSTDIS: Interrupt Nesting Disable bit 1 = Interrupt nesting is disabled 0 = Interrupt nesting is enabled OVAERR: Accumulator A Overflow Trap Flag bit 1 = Trap was caused by overflow of Accumulator A 0 = Trap was not caused by overflow of Accumulator A OVBERR: Accumulator B Overflow Trap Flag bit 1 = Trap was caused by overflow of Accumulator B 0 = Trap was not caused by overflow of Accumulator B COVAERR: Accumulator A Catastrophic Overflow Trap Enable bit 1 = Trap was caused by catastrophic overflow of Accumulator A 0 = Trap was not caused by catastrophic overflow of Accumulator A COVBERR: Accumulator B Catastrophic Overflow Trap Enable bit 1 = Trap was caused by catastrophic overflow of Accumulator B 0 = Trap was not caused by catastrophic overflow of Accumulator B OVATE: Accumulator A Overflow Trap Enable bit 1 = Trap overflow of Accumulator A 0 = Trap disabled OVBTE: Accumulator B Overflow Trap Enable bit 1 = Trap overflow of Accumulator B 0 = Trap disabled COVTE: Catastrophic Overflow Trap Enable bit 1 = Trap on catastrophic overflow of Accumulator A or B enabled 0 = Trap disabled SFTACERR: Shift Accumulator Error Status bit 1 = Math error trap was caused by an invalid accumulator shift 0 = Math error trap was not caused by an invalid accumulator shift DIV0ERR: Arithmetic Error Status bit 1 = Math error trap was caused by a divided by zero 0 = Math error trap was not caused by an invalid accumulator shift Unimplemented: Read as `0' MATHERR: Arithmetic Error Status bit 1 = Overflow trap has occurred 0 = Overflow trap has not occurred ADDRERR: Address Error Trap Status bit 1 = Address error trap has occurred 0 = Address error trap has not occurred
bit 14
bit 13
bit 12
bit 11
bit 10
bit 9
bit 8
bit 7
bit 6
bit 5 bit 4
bit 3
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REGISTER 5-1:
bit 2
INTCON1: INTERRUPT CONTROL REGISTER 1 (CONTINUED)
STKERR: Stack Error Trap Status bit 1 = Stack error trap has occurred 0 = Stack error trap has not occurred OSCFAIL: Oscillator Failure Trap Status bit 1 = Oscillator failure trap has occurred 0 = Oscillator failure trap has not occurred Unimplemented: Read as `0'
bit 1
bit 0
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REGISTER 5-2:
R/W-0 ALTIVT bit 15 U-0 -- bit 7 Legend: R = Readable bit -n = Value at POR bit 15 W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown U-0 -- U-0 -- U-0 -- U-0 -- R/W-0 INT2EP R/W-0 INT1EP
INTCON2: INTERRUPT CONTROL REGISTER 2
R-0 DISI U-0 -- U-0 -- U-0 -- U-0 -- U-0 -- U-0 -- bit 8 R/W-0 INT0EP bit 0
ALTIVT: Enable Alternate Interrupt Vector Table bit 1 = Use alternate vector table 0 = Use standard (default) vector table DISI: DISI Instruction Status bit 1 = DISI instruction is active 0 = DISI instruction is not active Unimplemented: Read as `0' INT2EP: External Interrupt 2 Edge Detect Polarity Select bit 1 = Interrupt on negative edge 0 = Interrupt on positive edge INT1EP: External Interrupt 1 Edge Detect Polarity Select bit 1 = Interrupt on negative edge 0 = Interrupt on positive edge INT0EP: External Interrupt 0 Edge Detect Polarity Select bit 1 = Interrupt on negative edge 0 = Interrupt on positive edge
bit 14
bit 13-3 bit 2
bit 1
bit 0
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REGISTER 5-3:
U-0 -- bit 15 R/W-0 T3IF bit 7 Legend: R = Readable bit -n = Value at POR bit 15 bit 14 W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown R/W-0 T2IF R/W-0 OC2IF U-0 -- R/W-0 T1IF R/W-0 OC1IF R/W-0 IC1IF
IFS0: INTERRUPT FLAG STATUS REGISTER 0
R/W-0 MI2CIF R/W-0 SI2CIF R/W-0 NVMIF R/W-0 ADIF R/W-0 U1TXIF R/W-0 U1RXIF R/W-0 SPI1IF bit 8 R/W-0 INT0IF bit 0
Unimplemented: Read as `0' MI2CIF: I2C Master Events Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred SI2CIF: I2C Slave Events Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred NVMIF: Nonvolatile Memory Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred ADIF: ADC Conversion Complete Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred U1TXIF: UART1 Transmitter Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred U1RXIF: UART1 Receiver Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred SPI1IF: SPI1 Event Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred T3IF: Timer3 Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred T2IF: Timer2 Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred OC2IF: Output Compare Channel 2 Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred Unimplemented: Read as `0' T1IF: Timer1 Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred
bit 13
bit 12
bit 11
bit 10
bit 9
bit 8
bit 7
bit 6
bit 5
bit 4 bit 3
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REGISTER 5-3:
bit 2
IFS0: INTERRUPT FLAG STATUS REGISTER 0 (CONTINUED)
OC1IF: Output Compare Channel 1 Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred IC1IF: Input Capture Channel 1 Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred INT0IF: External Interrupt 0 Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred
bit 1
bit 0
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REGISTER 5-4:
R/W-0 AC3IF bit 15 U-0 -- bit 7 Legend: R = Readable bit -n = Value at POR bit 15 W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown R/W-0 PWM4IF R/W-0 PWM3IF R/W-0 PWM2IF R/W-0 PWM1IF R/W-0 PSEMIF R/W-0 INT2IF
IFS1: INTERRUPT FLAG STATUS REGISTER 1
R/W-0 AC2IF R/W-0 AC1IF U-0 -- R/W-0 CNIF U-0 -- U-0 -- U-0 -- bit 8 R/W-0 INT1IF bit 0
AC3IF: Analog Comparator #3 Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred AC2IF: Analog Comparator #2 Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred AC1IF: Analog Comparator #1 Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred Unimplemented: Read as `0' CNIF: Input Change Notification Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred Unimplemented: Read as `0' PWM4IF: Pulse Width Modulation Generator #4 Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred PWM3IF: Pulse Width Modulation Generator #3 Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred PWM2IF: Pulse Width Modulation Generator #2 Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred PWM1IF: Pulse Width Modulation Generator #1 Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred PSEMIF: PWM Special Event Match Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred INT2IF: External Interrupt 2 Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred INT1IF: External Interrupt 1 Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred
bit 14
bit 13
bit 12 bit 11
bit 10 -7 bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
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REGISTER 5-5:
U-0 -- bit 15 R/W-0 ADCP2IF bit 7 Legend: R = Readable bit -n = Value at POR bit 15-11 bit 10 W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown R/W-0 ADCP1IF R/W-0 ADCP0IF U-0 -- U-0 -- U-0 -- U-0 --
IFS2: INTERRUPT FLAG STATUS REGISTER 2
U-0 -- U-0 -- U-0 -- U-0 -- R/W-0 ADCP5IF R/W-00 ADCP4IF R/W-0 ADCP3IF bit 8 R/W-0 AC4IF bit 0
Unimplemented: Read as `0' ADCP5IF: ADC Pair 5 Conversion Done Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred ADCP4IF: ADC Pair 4 Conversion Done Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred ADCP3IF: ADC Pair 3 Conversion Done Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred ADCP2IF: ADC Pair 2 Conversion Done Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred ADCP1IF: ADC Pair 1 Conversion Done Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred ADCP0IF: ADC Pair 0 Conversion Done Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred Unimplemented: Read as `0' AC4IF: Analog Comparator #4 Interrupt Flag Status bit 1 = Interrupt request has occurred 0 = Interrupt request has not occurred
bit 9
bit 8
bit 7
bit 6
bit 5
bit 4-1 bit 0
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REGISTER 5-6:
U-0 -- bit 15 R/W-0 T3IE bit 7 Legend: R = Readable bit -n = Value at POR bit 15 bit 14 W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown R/W-0 T2IE R/W-0 OC2IE U-0 -- R/W-0 T1IE R/W-0 OC1IE R/W-0 IC1IE
IEC0: INTERRUPT ENABLE CONTROL REGISTER 0
R/W-0 MI2CIE R/W-0 SI2CIE R/W-0 NVMIE R/W-0 ADIE R/W-0 U1TXIE R/W-0 U1RXIE R/W-0 SPI1IE bit 8 R/W-0 INT0IE bit 0
Unimplemented: Read as `0' MI2CIE: I2C Master Events Interrupt Enable bit 1 = Interrupt request enabled 0 = Interrupt request not enabled SI2CIE: I2C Slave Events Interrupt Enable bit 1 = Interrupt request enabled 0 = Interrupt request not enabled NVMIE: Nonvolatile Memory Interrupt Enable bit 1 = Interrupt request enabled 0 = Interrupt request not enabled ADIE: ADC Conversion Complete Interrupt Enable bit 1 = Interrupt request enabled 0 = Interrupt request not enabled U1TXIE: UART1 Transmitter Interrupt Enable bit 1 = Interrupt request enabled 0 = Interrupt request not enabled U1RXIE: UART1 Receiver Interrupt Enable bit 1 = Interrupt request enabled 0 = Interrupt request not enabled SPI1IE: SPI1 Event Interrupt Enable bit 1 = Interrupt request enabled 0 = Interrupt request not enabled T3IE: Timer3 Interrupt Enable bit 1 = Interrupt request enabled 0 = Interrupt request not enabled T2IE: Timer2 Interrupt Enable bit 1 = Interrupt request enabled 0 = Interrupt request not enabled OC2IE: Output Compare Channel 2 Interrupt Enable bit 1 = Interrupt request enabled 0 = Interrupt request not enabled Unimplemented: Read as `0' T1IE: Timer1 Interrupt Enable bit 1 = Interrupt request enabled 0 = Interrupt request not enabled
bit 13
bit 12
bit 11
bit 10
bit 9
bit 8
bit 7
bit 6
bit 5
bit 4 bit 3
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REGISTER 5-6:
bit 2
IEC0: INTERRUPT ENABLE CONTROL REGISTER 0 (CONTINUED)
OC1IE: Output Compare Channel 1 Interrupt Enable bit 1 = Interrupt request enabled 0 = Interrupt request not enabled IC1IE: Input Capture Channel 1 Interrupt Enable bit 1 = Interrupt request enabled 0 = Interrupt request not enabled INT0IE: External Interrupt 0 Enable bit 1 = Interrupt request enabled 0 = Interrupt request not enabled
bit 1
bit 0
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REGISTER 5-7:
R/W-0 AC3IE bit 15 U-0 -- bit 7 Legend: R = Readable bit -n = Value at POR bit 15 W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown R/W-0 PWM4IE R/W-0 PWM3IE R/W-0 PWM2IE R/W-0 PWM1IE R/W-0 PSEMIE R/W-0 INT2IE
IEC1: INTERRUPT ENABLE CONTROL REGISTER 1
R/W-0 AC2IE R/W-0 AC1IE U-0 -- R/W-0 CNIE U-0 -- U-0 -- U-0 -- bit 8 R/W-0 INT1IE bit 0
AC3IE: Analog Comparator #3 Interrupt Enable bit 1 = Interrupt request enabled 0 = Interrupt request not enabled AC2IE: Analog Comparator #2 Interrupt Enable bit 1 = Interrupt request enabled 0 = Interrupt request not enabled AC1IE: Analog Comparator #1 Interrupt Enable bit 1 = Interrupt request enabled 0 = Interrupt request not enabled Unimplemented: Read as `0' CNIE: Input Change Notification Interrupt Enable bit 1 = Interrupt request enabled 0 = Interrupt request not enabled Unimplemented: Read as `0' PWM4IE: Pulse Width Modulation Generator #4 Interrupt Enable bit 1 = Interrupt request enabled 0 = Interrupt request not enabled PWM3IE: Pulse Width Modulation Generator #3 Interrupt Enable bit 1 = Interrupt request enabled 0 = Interrupt request not enabled PWM2IE: Pulse Width Modulation Generator #2 Interrupt Enable bit 1 = Interrupt request enabled 0 = Interrupt request not enabled PWM1IE: Pulse Width Modulation Generator #1 Interrupt Enable bit 1 = Interrupt request enabled 0 = Interrupt request not enabled PSEMIE: PWM Special Event Match Interrupt Enable bit 1 = Interrupt request enabled 0 = Interrupt request not enabled INT2IE: External Interrupt 2 Enable bit 1 = Interrupt request enabled 0 = Interrupt request not enabled INT1IE: External Interrupt 1 Enable bit 1 = Interrupt request enabled 0 = Interrupt request not enabled
bit 14
bit 13
bit 12 bit 11
bit 10 -7 bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
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REGISTER 5-8:
U-0 -- bit 15 R/W-0 ADCP2IE bit 7 Legend: R = Readable bit -n = Value at POR bit 15 -11 bit 10 W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown R/W-0 ADCP1IE R/W-0 ADCP0IE U-0 -- U-0 -- U-0 -- U-0 --
IEC2: INTERRUPT ENABLE CONTROL REGISTER 2
U-0 -- U-0 -- U-0 -- U-0 -- R/W-0 ADCP5IE R/W-0 ADCP4IE R/W-0 ADCP3IE bit 8 R/W-0 AC4IE bit 0
Unimplemented: Read as `0' ADCP5IE: ADC Pair 5 Conversion done Interrupt Enable bit 1 = Interrupt request enabled 0 = Interrupt request not enabled ADCP5IE: ADC Pair 5 Conversion done Interrupt Enable bit 1 = Interrupt request enabled 0 = Interrupt request not enabled ADCP4IE: ADC Pair 4 Conversion done Interrupt Enable bit 1 = Interrupt request enabled 0 = Interrupt request not enabled ADCP3IE: ADC Pair 3 Conversion done Interrupt Enable bit 1 = Interrupt request enabled 0 = Interrupt request not enabled ADCP2IE: ADC Pair 2 Conversion done Interrupt Enable bit 1 = Interrupt request enabled 0 = Interrupt request not enabled ADCP1IE: ADC Pair 1 Conversion done Interrupt Enable bit 1 = Interrupt request enabled 0 = Interrupt request not enabled ADCP0IE: ADC Pair 0 Conversion done Interrupt Enable bit 1 = Interrupt request enabled 0 = Interrupt request not enabled Unimplemented: Read as `0' AC4IE: Analog Comparator #4 Interrupt Enable bit 1 = Interrupt request enabled 0 = Interrupt request not enabled
bit 9
bit 8
bit 7
bit 8
bit 7
bit 6
bit 4 -1 bit 0
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REGISTER 5-9:
U-0 -- bit 15 U-0 -- bit 7 Legend: R = Readable bit -n = Value at POR bit 15 bit 14-12 W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown R/W-1 R/W-0 IC1IP<2:0> R/W-0 U-0 -- R/W-1 R/W-0 INT0IP<2:0> bit 0
IPC0: INTERRUPT PRIORITY CONTROL REGISTER 0
R/W-1 R/W-0 T1IP<2:0> R/W-0 U-0 -- R/W-1 R/W-0 OC1IP<2:0> bit 8 R/W-0 R/W-0
Unimplemented: Read as `0' T1IP<2:0>: Timer1 Interrupt Priority bits 111 = Interrupt is priority 7 (highest priority interrupt) * * * 001 = Interrupt is priority 1 000 = Interrupt source is disabled Unimplemented: Read as `0' OC1IP<2:0>: Output Compare Channel 1 Interrupt Priority bits 111 = Interrupt is priority 7 (highest priority interrupt) * * * 001 = Interrupt is priority 1 000 = Interrupt source is disabled Unimplemented: Read as `0' IC1IP<2:0>: Input Capture Channel 1 Interrupt Priority bits 111 = Interrupt is priority 7 (highest priority interrupt) * * * 001 = Interrupt is priority 1 000 = Interrupt source is disabled Unimplemented: Read as `0' INT0IP<2:0>: External Interrupt 0 Priority bits 111 = Interrupt is priority 7 (highest priority interrupt) * * * 001 = Interrupt is priority 1 000 = Interrupt source is disabled
bit 11 bit 10-8
bit 7 bit 6-4
bit 3 bit 2-0
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REGISTER 5-10:
U-0 -- bit 15 U-0 -- bit 7 Legend: R = Readable bit -n = Value at POR bit 15 bit 14-12 W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown R/W-1 R/W-0 OC2IP<2:0> R/W-0 U-0 -- U-0 -- U-0 -- U-0 -- bit 0
IPC1: INTERRUPT PRIORITY CONTROL REGISTER 1
R/W-1 R/W-0 T3IP<2:0> R/W-0 U-0 -- R/W-1 R/W-0 T2IP<2:0> bit 8 R/W-0
Unimplemented: Read as `0' T3IP<2:0>: Timer3 Interrupt Priority bits 111 = Interrupt is priority 7 (highest priority interrupt) * * * 001 = Interrupt is priority 1 000 = Interrupt source is disabled Unimplemented: Read as `0' T2IP<2:0>: Timer2 Interrupt Priority bits 111 = Interrupt is priority 7 (highest priority interrupt) * * * 001 = Interrupt is priority 1 000 = Interrupt source is disabled Unimplemented: Read as `0' OC2IP<2:0>: Output Compare Channel 2 Interrupt Priority bits 111 = Interrupt is priority 7 (highest priority interrupt) * * * 001 = Interrupt is priority 1 000 = Interrupt source is disabled Unimplemented: Read as `0'
bit 11 bit 10-8
bit 7 bit 6-4
bit 3-0
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REGISTER 5-11:
U-0 -- bit 15 U-0 -- bit 7 Legend: R = Readable bit -n = Value at POR bit 15 bit 14-12 W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown R/W-1 R/W-0 U1RXIP<2:0> R/W-0 U-0 -- R/W-1 R/W-0 SPI1IP<2:0> bit 0
IPC2: INTERRUPT PRIORITY CONTROL REGISTER 2
R/W-1 R/W-0 ADIP<2:0> R/W-0 U-0 -- R/W-1 R/W-0 U1TXIP<2:0> bit 8 R/W-0 R/W-0
Unimplemented: Read as `0' ADIP<2:0>: ADC Conversion Complete Interrupt Priority bits 111 = Interrupt is priority 7 (highest priority interrupt) * * * 001 = Interrupt is priority 1 000 = Interrupt source is disabled Unimplemented: Read as `0' U1TXIP<2:0>: UART1 Transmitter Interrupt Priority bits 111 = Interrupt is priority 7 (highest priority interrupt) * * * 001 = Interrupt is priority 1 000 = Interrupt source is disabled Unimplemented: Read as `0' U1RXIP<2:0>: UART1 Receiver Interrupt Priority bits 111 = Interrupt is priority 7 (highest priority interrupt) * * * 001 = Interrupt is priority 1 000 = Interrupt source is disabled Unimplemented: Read as `0' SPI1IP<2:0>: SPI1 Event Interrupt Priority bits 111 = Interrupt is priority 7 (highest priority interrupt) * * * 001 = Interrupt is priority 1 000 = Interrupt source is disabled
bit 11 bit 10-8
bit 7 bit 6-4
bit 3 bit 2-0
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REGISTER 5-12:
U-0 -- bit 15 U-0 -- bit 7 Legend: R = Readable bit -n = Value at POR bit 15-11 bit 10-8 W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown R/W-1 R/W-0 SI2CIP<2:0> R/W-0 U-0 -- R/W-1 R/W-0 NVMIP<2:0> bit 0
IPC3: INTERRUPT CONTROL REGISTER 3
U-0 -- U-0 -- U-0 -- U-0 -- R/W-1 R/W-0 MI2CIP<2:0> bit 8 R/W-0 R/W-0
Unimplemented: Read as `0' MI2CIP<2:0>: I2C Master Events Interrupt Priority bits 111 = Interrupt is priority 7 (highest priority interrupt) * * * 001 = Interrupt is priority 1 000 = Interrupt source is disabled Unimplemented: Read as `0' SI2CIP<2:0>: I2C Slave Events Interrupt Priority bits 111 = Interrupt is priority 7 (highest priority interrupt) * * * 001 = Interrupt is priority 1 000 = Interrupt source is disabled Unimplemented: Read as `0' NVMIP<2:0>: Nonvolatile Memory Interrupt Priority bits 111 = Interrupt is priority 7 (highest priority interrupt) * * * 001 = Interrupt is priority 1 000 = Interrupt source is disabled
bit 7 bit 6-4
bit 3 bit 2-0
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REGISTER 5-13:
U-0 -- bit 15 U-0 -- bit 7 Legend: R = Readable bit -n = Value at POR bit 15 bit 14-12 W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown R/W-1 R/W-0 INT2IP<2:0> R/W-0 U-0 -- R/W-1 R/W-0 INT1IP<2:0> bit 0
IPC4: INTERRUPT PRIORITY CONTROL REGISTER 4
R/W-1 R/W-0 PWM1IP<2:0> R/W-0 U-0 -- R/W-1 R/W-0 PSEMIP<2:0> bit 8 R/W-0 R/W-0
Unimplemented: Read as `0' PWM1IP<2:0>: PWM Generator #1 Interrupt Priority bits 111 = Interrupt is priority 7 (highest priority interrupt) * * * 001 = Interrupt is priority 1 000 = Interrupt source is disabled Unimplemented: Read as `0' PSEMIP<2:0>: PWM Special Event Match Priority bits 111 = Interrupt is priority 7 (highest priority interrupt) * * * 001 = Interrupt is priority 1 000 = Interrupt source is disabled Unimplemented: Read as `0' INT2IP<2:0>: External Interrupt 2 Priority bits 111 = Interrupt is priority 7 (highest priority interrupt) * * * 001 = Interrupt is priority 1 000 = Interrupt source is disabled Unimplemented: Read as `0' INT1IP<2:0>: External Interrupt 1 Priority bits 111 = Interrupt is priority 7 (highest priority interrupt) * * * 001 = Interrupt is priority 1 000 = Interrupt source is disabled
bit 11 bit 10-8
bit 7 bit 6-4
bit 3 bit 2-0
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REGISTER 5-14:
U-0 -- bit 15 U-0 -- bit 7 Legend: R = Readable bit -n = Value at POR bit 15-11 bit 10-8 W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown R/W-1 R/W-0 PWM3IP<2:0> R/W-0 U-0 -- R/W-1 R/W-0 PWM2IP<2:0> bit 0
IPC5: INTERRUPT PRIORITY CONTROL REGISTER 5
U-0 -- U-0 -- U-0 -- U-0 -- R/W-1 R/W-0 PWM4IP<2:0> bit 8 R/W-0 R/W-0
Unimplemented: Read as `0' PWM4IP<2:0>: PWM Generator #4 Interrupt Priority bits 111 = Interrupt is priority 7 (highest priority interrupt) * * * 001 = Interrupt is priority 1 000 = Interrupt source is disabled Unimplemented: Read as `0' PWM3IP<2:0>: PWM Generator #3 Interrupt Priority bits 111 = Interrupt is priority 7 (highest priority interrupt) * * * 001 = Interrupt is priority 1 000 = Interrupt source is disabled Unimplemented: Read as `0' PWM2IP<2:0>: PWM Generator #2 Interrupt Priority bits 111 = Interrupt is priority 7 (highest priority interrupt) * * * 001 = Interrupt is priority 1 000 = Interrupt source is disabled
bit 7 bit 6-4
bit 3 bit 2-0
DS70178A-page 70
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dsPIC30F1010/202X
REGISTER 5-15:
U-0 -- bit 15 U-0 -- bit 7 Legend: R = Readable bit -n = Value at POR bit 15 bit 14-12 W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown U-0 -- U-0 -- U-0 -- U-0 -- U-0 -- U-0 -- U-0 -- bit 0
IPC6: INTERRUPT PRIORITY CONTROL REGISTER 6
R/W-1 R/W-0 CNIP<2:0> R/W-0 U-0 -- U-0 -- U-0 -- U-0 -- bit 8
Unimplemented: Read as `0' CNIP<2:0>: Change Notification Interrupt Priority bits 111 = Interrupt is priority 7 (highest priority interrupt) * * * 001 = Interrupt is priority 1 000 = Interrupt source is disabled Unimplemented: Read as `0'
bit 11-0
(c) 2006 Microchip Technology Inc.
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DS70178A-page 71
dsPIC30F1010/202X
REGISTER 5-16:
U-0 -- bit 15 U-0 -- bit 7 Legend: R = Readable bit -n = Value at POR bit 15 bit 14-12 W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown R/W-1 R/W-0 AC1IP<2:0> R/W-0 U-0 -- U-0 -- U-0 -- U-0 -- bit 0
IPC7: INTERRUPT PRIORITY CONTROL REGISTER 7
R/W-1 R/W-0 AC3IP<2:0> R/W-0 U-0 -- R/W-1 R/W-0 AC2IP<2:0> bit 8 R/W-0
Unimplemented: Read as `0' AC3IP<2:0>: Analog Comparator 3 Interrupt Priority bits 111 = Interrupt is priority 7 (highest priority interrupt) * * * 001 = Interrupt is priority 1 000 = Interrupt source is disabled Unimplemented: Read as `0' AC2IP<2:0>: Analog Comparator 2 Interrupt Priority bits 111 = Interrupt is priority 7 (highest priority interrupt) * * * 001 = Interrupt is priority 1 000 = Interrupt source is disabled Unimplemented: Read as `0' AC1IP<2:0>: Analog Comparator 1 Interrupt Priority bits 111 = Interrupt is priority 7 (highest priority interrupt) * * * 001 = Interrupt is priority 1 000 = Interrupt source is disabled Unimplemented: Read as `0'
bit 11 bit 10-8
bit 7 bit 6-4
bit 3-0
DS70178A-page 72
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dsPIC30F1010/202X
REGISTER 5-17:
U-0 -- bit 15 U-0 -- bit 7 Legend: R = Readable bit -n = Value at POR bit 15-3 bit 2-0 W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown U-0 -- U-0 -- U-0 -- U-0 -- R/W-1 R/W-0 AC4IP<2:0> bit 0
IPC8: INTERRUPT PRIORITY CONTROL REGISTER 8
U-0 -- U-0 -- U-0 -- U-0 -- U-0 -- U-0 -- U-0 -- bit 8 R/W-0
Unimplemented: Read as `0' AC4IP<2:0>: Analog Comparator 4 Interrupt Priority bits 111 = Interrupt is priority 7 (highest priority interrupt) * * * 001 = Interrupt is priority 1 000 = Interrupt source is disabled
(c) 2006 Microchip Technology Inc.
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DS70178A-page 73
dsPIC30F1010/202X
REGISTER 5-18:
U-0 -- bit 15 U-0 -- bit 7 Legend: R = Readable bit -n = Value at POR bit 15 bit 14 - 12 W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown R/W-1 R/W-0 ADCP0IP<2:0> R/W-0 U-0 -- U-0 -- U-0 -- U-0 -- bit 0
IPC9: INTERRUPT PRIORITY CONTROL REGISTER 9
R/W-1 R/W-0 ADCP2IP<2:0> R/W-0 U-0 -- R/W-1 R/W-0 ADCP1IP<2:0> bit 8 R/W-0
Unimplemented: Read as `0' ADCP2IP<2:0>: ADC Pair 2 Conversion Done Interrupt Priority bits 111 = Interrupt is priority 7 (highest priority interrupt) * * * 001 = Interrupt is priority 1 000 = Interrupt source is disabled Unimplemented: Read as `0' ADCP1IP<2:0>: ADC Pair 1 Conversion Done Interrupt Priority bits 111 = Interrupt is priority 7 (highest priority interrupt) * * * 001 = Interrupt is priority 1 000 = Interrupt source is disabled Unimplemented: Read as `0' ADCP0IP<2:0>: ADC Pair 0 Conversion Done Interrupt Priority bits 111 = Interrupt is priority 7 (highest priority interrupt) * * * 001 = Interrupt is priority 1 000 = Interrupt source is disabled Unimplemented: Read as `0'
bit 11 bit 10 - 8
bit 7 bit 6 - 4
bit 3 - 0
DS70178A-page 74
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dsPIC30F1010/202X
REGISTER 5-19:
U-0 -- bit 15 U-0 -- bit 7 Legend: R = Readable bit -n = Value at POR bit 15 -10 bit 10 - 8 W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown R/W-1 R/W-0 ADCP4IP<2:0> R/W-0 U-0 -- R/W-1 R/W-0 ADCP3IP<2:0> bit 0
IPC10: INTERRUPT PRIORITY CONTROL REGISTER 10
U-0 -- U-0 -- U-0 -- U-0 -- R/W-1 R/W-0 ADCP5IP<2:0> bit 8 R/W-0 R/W-0
Unimplemented: Read as `0' ADCP5IP<2:0>: ADC Pair 5 Conversion Done Interrupt Priority bits 111 = Interrupt is priority 7 (highest priority interrupt) * * * 001 = Interrupt is priority 1 000 = Interrupt source is disabled Unimplemented: Read as `0' ADCP4IP<2:0>: ADC Pair 4 Conversion Done Interrupt Priority bits 111 = Interrupt is priority 7 (highest priority interrupt) * * * 001 = Interrupt is priority 1 000 = Interrupt source is disabled Unimplemented: Read as `0' ADCP3IP<2:0>: ADC Pair 3 Conversion Done Interrupt Priority bits 111 = Interrupt is priority 7 (highest priority interrupt) * * * 001 = Interrupt is priority 1 000 = Interrupt source is disabled
bit 7 bit 10 - 8
bit 3 bit 2 - 0
(c) 2006 Microchip Technology Inc.
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DS70178A-page 75
TABLE 5-2:
Bit 13
OVBERR COVAERR COVBERR OVATE OVBTE COVTE SFTACERR DIV0ERR -- MATHERR ADDRERR STKERR OSCFAIL
INTERRUPT CONTROLLER REGISTER MAP
Bit 12 --
INT0EP INT0IF INT1IF AC4IF INT0IE INT1IE -- INT0IP<2:0> -- -- SPI1IP<2:0> NVMIP<2:0> -- -- -- -- -- -- -- -- ADCP4IP<2:0> -- -- -- -- INT1IP<2:0> PWM2IP<2:0> -- -- AC4IP<2:0> -- ADCP3IP<2:0> -- -- -- -- AC4IE
SFR Name Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
ADR
Bit 15
Bit 14
Reset State 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
INTCON1
-- SI2CIF AC1IF -- SI2CIE AC1IE -- T1IP<2:0> T31P<2:0> ADIP<2:0> -- -- -- -- -- -- -- -- -- ADCP5IP<2:0> -- ADCP1IP<2:0> -- -- -- -- -- -- -- -- ADCP0IP<2:0> AC2IP<2:0> -- AC1IP<2:0> -- -- -- -- -- -- -- PWM4IP<2:0> -- PWM3IP<2:0> PSEMIP<2:0> -- INT2IP<2:0> -- -- MI2CIP<2:0> -- SI2CIP<2:0> -- -- U1TXIP<2:0> -- U1RXIP<2:0> -- -- T2IP<2:0> -- OC2IP<2:0> -- -- OC1IP<2:0> -- IC1IP<2:0> -- -- -- ADCP5IE ADCP4IE ADCP3IE ADCP2IE ADCP1IE ADCP0IE -- -- -- -- CNIE -- -- -- -- PWM4IE PWM3IE PWM2IE PWM1IE PSEMIE NVMIE ADIE U1TXIE U1RXIE SPI1IE T3IE T2IE OC2IE -- T1IE OC1IE IC1IE INT2IE -- -- ADCP5IF ADCP4IF ADCP3IF ADCP2IF ADCP41F ADCP0IF -- -- -- -- -- CNIF -- -- -- -- PWM4IF PWM3IF PWM2IF PWM1IF PSEMIF INT2IF NVMIF ADIF U1TXIF U1RXIF SPI1IF T3IF T2IF OC2IF -- T1IF OC1IF IC1IF -- -- -- -- -- -- -- -- -- -- INT2EP INT1EP
0080
NSTDIS
OVAERR
INTCON2
0082
ALTIVT
DISI
IFS0
0084
--
MI2CIF
IFS1
0086
AC3IF
AC2IF
IFS2
0088
--
--
(c) 2006 Microchip Technology Inc.
-- CNIP<2:0> -- --
IEC0
0094
--
MI2CIE
IEC1
0096
AC3IE
AC2IE
IEC2
0098
--
--
0000 0000 0000 0000 0100 0100 0100 0100 0100 0100 0100 0000 0100 0100 0100 0100 0000 0100 0100 0100 0100 0100 0100 0100 0000 0100 0100 0100 0100 0000 0000 0000 0100 0100 0100 0000 0000 0000 0000 0100 0100 0100 0100 0000 0000 0100 0100 0100
IPC0
00A4
--
IPC1
00A6
--
IPC2
00A8
--
IPC3
00AA
--
--
IPC4
00AC
--
PWM1IP<2:0>
IPC5
00AE
--
--
IPC6
00B0
--
IPC7
00B2
--
AC3IP<2:0>
IPC8
00B4
--
--
IPC9
00B6
--
ADCP2IP<2:0>
IPC10
00B8
--
--
Advance Information
Note:
Refer to the "dsPIC30F Family Reference Manual" (DS70046) for descriptions of register bit fields.
dsPIC30F1010/202X
DS70178A-page 76
dsPIC30F1010/202X
6.0 I/O PORTS
Note: This data sheet summarizes features of this group of dsPIC30F devices and is not intended to be a complete reference source. For more information on the CPU, peripherals, register descriptions and general device functionality, refer to the "dsPIC30F Family Reference Manual" (DS70046).
is an input. All port pins are defined as inputs after a Reset. Reads from the latch (LATx), read the latch. Writes to the latch, write the latch (LATx). Reads from the port (PORTx), read the port pins, and writes to the port pins, write the latch (LATx). Any bit and its associated data and control registers that are not valid for a particular device will be disabled. That means the corresponding LATx and TRISx registers and the port pin will read as zeros. When a pin is shared with another peripheral or function that is defined as an input only, it is nevertheless regarded as a dedicated port because there is no other competing source of outputs. A Parallel I/O (PIO) port that shares a pin with a peripheral is, in general, subservient to the peripheral. The peripheral's output buffer data and control signals are provided to a pair of multiplexers. The multiplexers select whether the peripheral or the associated port has ownership of the output data and control signals of the I/O pad cell. Figure 6-1 shows how ports are shared with other peripherals, and the associated I/O cell (pad) to which they are connected. Table 6-1 and Table 6-2 show the register formats for the shared ports, PORTA through PORTF, for the dsPIC30F1010/2020 and the dsPIC30F2023 device, respectively.
All of the device pins (except VDD, VSS, MCLR and OSC1/CLKI) are shared between the peripherals and the parallel I/O ports. All I/O input ports feature Schmitt Trigger inputs for improved noise immunity.
6.1
Parallel I/O (PIO) Ports
When a peripheral is enabled and the peripheral is actively driving an associated pin, the use of the pin as a general purpose output pin is disabled. The I/O pin may be read, but the output driver for the parallel port bit will be disabled. If a peripheral is enabled, but the peripheral is not actively driving a pin, that pin may be driven by a port. All port pins have three registers directly associated with the operation of the port pin. The data direction register (TRISx) determines whether the pin is an input or an output. If the data direction bit is a `1', then the pin
FIGURE 6-1:
BLOCK DIAGRAM OF A SHARED PORT STRUCTURE
Peripheral Module
Peripheral Input Data Peripheral Module Enable
Output Multiplexers
I/O Cell
Peripheral Output Enable Peripheral Output Data 1 0 1 0 Read TRIS I/O Pad Data Bus WR TRIS D CK TRIS Latch D WR LAT + WR Port CK Data Latch Q Q Output Enable
PIO Module
Output Data
Read LAT Read Port
Input Data
(c) 2006 Microchip Technology Inc.
Advance Information
DS70178A-page 77
dsPIC30F1010/202X
6.2 Configuring Analog Port Pins 6.3 Input Change Notification
The use of the ADPCFG and TRIS registers control the operation of the A/D port pins. The port pins that are desired as analog inputs must have their corresponding TRIS bit set (input). If the TRIS bit is cleared (output), the digital output level (VOH or VOL) will be converted. When reading the PORT register, all pins configured as analog input channel will read as cleared (a low level). Pins configured as digital inputs will not convert an analog input. Analog levels on any pin that is defined as a digital input (including the ANx pins), may cause the input buffer to consume current that exceeds the device specifications. The input change notification function of the I/O ports allows the dsPIC30F1010/202X devices to generate interrupt requests to the processor in response to a change-of-state on selected input pins. This feature is capable of detecting input change-of-states even in Sleep mode, when the clocks are disabled. There are 8 external signals (CN0 through CN7) that can be selected (enabled) for generating an interrupt request on a change-of-state. There are two control registers associated with the CN module. The CNEN1 register contain the CN interrupt enable (CNxIE) control bits for each of the CN input pins. Setting any of these bits enables a CN interrupt for the corresponding pins. Each CN pin also has a weak pull-up connected to it. The pull-ups act as a current source that is connected to the pin and eliminate the need for external resistors when push button or keypad devices are connected. The pull-ups are enabled separately using the CNPU1 register, which contain the weak pull-up enable (CNxPUE) bits for each of the CN pins. Setting any of the control bits enables the weak pull-ups for the corresponding pins.
6.2.1
I/O PORT WRITE/READ TIMING
One instruction cycle is required between a port direction change or port write operation and a read operation of the same port. Typically this instruction would be a NOP.
EXAMPLE 6-1:
PORT WRITE/READ EXAMPLE
MOV 0xFF00, W0; Configure PORTB<15:8> ; as inputs MOV W0, TRISBB; and PORTB<7:0> as outputs NOP ; Delay 1 cycle BTSS PORTB, #13; Next Instruction
Note: Pull-ups on change notification pins should always be disabled whenever the port pin is configured as a digital output.
DS70178A-page 78
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TABLE 6-1:
Bit 14 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- LATF8 LATF7 LATF6 -- -- -- -- -- -- -- RF8 RF7 RF6 -- -- -- -- -- -- -- -- -- TRISF8 TRISF7 TRISF6 -- -- -- -- -- -- -- -- -- LATE7 LATE6 LATE5 LATE4 LATE3 -- -- -- -- -- -- RE7 RE6 RE5 RE4 RE3 RE2 LATE2 -- -- -- -- -- -- -- -- -- TRSE7 TRSE6 TRISE5 TRISE4 TRISE3 TRISE2 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- TRISE1 RE1 LATE1 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- LATB7 LATB6 LATB5 LATB4 LATB3 LATB2 LATB1 -- -- -- -- -- -- RB7 RB6 RB5 RB4 RB3 RB2 RB1 RB0 LATB0 TRISD0 RD0 LATD0 TRISE0 RE0 LATE0 -- -- -- -- -- -- -- -- -- TRISB7 TRISB6 TRISB5 TRISB4 TRISB3 TRISB2 TRISB1 TRISB0 -- -- -- -- LAT9 -- -- -- -- -- -- -- -- -- -- -- -- -- RA9 -- -- -- -- -- -- -- -- -- -- -- -- -- TRIS9 -- -- -- -- -- -- -- -- -- Bit 13 Bit 12 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Bit 11 Reset State
dsPIC30F1010/2020 PORT REGISTER MAP
SFR Name
Addr.
Bit 15
TRISA
02C0
--
0000 0010 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0011 1111 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0101 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 1111 1111 0000 0000 0000 0000 0000 0000 0000 0000 0000 0001 1100 0000 0000 0000 0000 0000 0000 0000 0000 0000
PORTA
02C2
--
LATA
02C4
--
TRISB
02C6
--
PORTB
02C8
--
LATB
02CA
--
(c) 2006 Microchip Technology Inc.
TRISD
02D2
--
PORTD
02D4
--
LATD
02D6
--
TRISE
02D8
--
PORTE
02DA
--
LATE
02DC
--
TRISF
02DE
--
PORTF
02E0
--
LATF
02E2
--
Advance Information
Note: Refer to the "dsPIC30F Family Reference Manual" (DS70046) for descriptions of register bit fields.
dsPIC30F1010/202X
DS70178A-page 79
TABLE 6-2:
Bit 13 Bit 12 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- LATF8 LATF7 LATF6 -- -- LATF3 -- -- -- RF8 RF7 RF6 -- -- RF3 -- -- -- TRISF8 TRISF7 TRISF6 -- -- TRISF3 -- -- -- -- LATE7 LATE6 LATE5 LATE4 LATE3 LATE2 TRISF2 RF2 LATF2 -- -- -- -- RE7 RE6 RE5 RE4 RE3 RE2 -- -- -- -- TRSE7 TRSE6 TRISE5 TRISE4 TRISE3 TRISE2 TRISE1 RE1 LATE1 -- -- -- -- RG3 LATG3 RG2 LATG2 -- -- -- -- -- -- -- -- -- -- -- -- LATD1 -- -- -- -- -- -- -- -- -- -- RD1 -- -- TRISE0 RE0 LATE0 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- TRISD1 -- LATB11 LATB10 LATB9 LATB8 LATB7 LATB6 LATB5 LATB4 LATB3 LATB2 LATB1 LATB0 RB11 RB10 RB9 RB8 RB7 RB6 RB5 RB4 RB3 RB2 RB1 RB0 TRISB11 TRISB10 TRISB9 TRISB8 TRISB7 TRIS6 TRISB5 TRISB4 TRISB3 TRISB2 TRISB1 TRISB0 LATA11 LATA10 LATA9 LATA8 -- -- -- -- -- -- -- LATA0 RA11 RA10 RA9 RA8 -- -- -- -- -- -- -- RA0 TRISA11 TRISA10 TRIS9 TRISA8 -- -- -- -- -- -- -- TRISA0 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Reset State 0000 1111 0000 0001 0000 0000 0000 0000 0000 0000 0000 0000 0000 1111 1111 1111 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0010 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 1111 1111 0000 0000 0000 0000 0000 0000 0000 0000 1100 0001 1100 1100 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 1100 0000 0000 0000 0000 0000 0000 0000 0000
dsPIC30F2023 PORT REGISTER MAP
SFR Name Addr.
Bit 15
Bit 14
TRISA
02C0
--
--
PORTA
02C2
--
--
DS70178A-page 80
TRISG3 TRISG2 Bit 13 Bit 12 Bit 11 -- -- -- -- -- -- -- -- -- -- -- CN7IE -- CN6IE Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 CN5IE Bit 4 CN4IE Bit 3 CN3IE Bit 2 CN2IE Bit 1 CN1IE Bit 0 CN0IE Reset State 0000 1111 0000 0001 0000 0000 0000 0000 CN7PUE CN6PUE CN5PUE CN4PUE CN3PUE CN2PUE CN1PUE CN0PUE
LATA
02C4
--
--
TRISB
02C6
--
--
PORTB
02C8
--
--
LATB
02CA
--
--
TRISD
02D2
--
--
PORTD
02D4
--
--
LATD
02D6
--
--
TRISE
02D8
--
--
PORTE
02DA
--
--
LATE
02DC
--
--
TRISF
02DE
TRISF15
TRISF14
dsPIC30F1010/202X
PORTF
02E0
RF15
RF14
LATF
02E2
LATF15
LATF14
TRISG
02E4
--
--
PORTG
02E6
--
--
LATG
02E8
--
--
Advance Information
Note: Refer to the "dsPIC30F Family Reference Manual" (DS70046) for descriptions of register bit fields.
TABLE 6-3:
dsPIC30F1010/202X INPUT CHANGE NOTIFICATION REGISTER MAP
SFR Name Addr.
Bit 15
Bit 14
CNEN1
0060
--
--
CNPU1
0064
--
--
(c) 2006 Microchip Technology Inc.
Note: Refer to the "dsPIC30F Family Reference Manual" (DS70046) for descriptions of register bit fields.
dsPIC30F1010/202X
7.0 FLASH PROGRAM MEMORY
Note: This data sheet summarizes features of this group of dsPIC30F devices and is not intended to be a complete reference source. For more information on the CPU, peripherals, register descriptions and general device functionality, refer to the "dsPIC30F Family Reference Manual" (DS70046). For more information on the device instruction set and programming, refer to the "dsPIC30F/ 33F Programmer's Reference Manual" (DS70157).
program the microcontroller just before shipping the product. This also allows the most recent firmware or a custom firmware to be programmed.
7.2
Run Time Self-Programming (RTSP)
RTSP is accomplished using TBLRD (table read) and TBLWT (table write) instructions. With RTSP, the user may erase program memory 32 instructions (96 bytes) at a time and can write program memory data 32 instructions (96 bytes) at a time.
The dsPIC30F family of devices contains internal program Flash memory for executing user code. There are two methods by which the user can program this memory: 1. 2. In-Circuit Serial ProgrammingTM (ICSPTM) programming capability Run Time Self-Programming (RTSP)
7.3
Table Instruction Operation Summary
7.1
In-Circuit Serial Programming (ICSP)
The TBLRDL and the TBLWTL instructions are used to read or write to bits <15:0> of program memory. TBLRDL and TBLWTL can access program memory in Word or Byte mode. The TBLRDH and TBLWTH instructions are used to read or write to bits<23:16> of program memory. TBLRDH and TBLWTH can access program memory in Word or Byte mode. A 24-bit program memory address is formed using bits<7:0> of the TBLPAG register and the Effective Address (EA) from a W register specified in the table instruction, as shown in Figure 7-1.
dsPIC30F devices can be serially programmed while in the end application circuit. This is simply done with two lines for Programming Clock and Programming Data (which are named PGC and PGD respectively), and three other lines for Power (VDD), Ground (VSS) and Master Clear (MCLR). This allows customers to manufacture boards with unprogrammed devices, and then
FIGURE 7-1:
ADDRESSING FOR TABLE AND NVM REGISTERS
24 bits Using Program Counter 0 Program Counter 0
NVMADR Reg EA Using NVMADR Addressing 1/0 NVMADRU Reg 8 bits 16 bits
Working Reg EA Using Table Instruction 1/0 TBLPAG Reg 8 bits 16 bits
User/Configuration Space Select
24-bit EA
Byte Select
(c) 2006 Microchip Technology Inc.
Advance Information
DS70178A-page 81
dsPIC30F1010/202X
7.4 RTSP Operation 7.5 Control Registers
The dsPIC30F Flash program memory is organized into rows and panels. Each row consists of 32 instructions, or 96 bytes. Each panel consists of 128 rows, or 4K x 24 instructions. RTSP allows the user to erase one row (32 instructions) at a time and to program 32 instructions at one time. RTSP may be used to program multiple program memory panels, but the table pointer must be changed at each panel boundary. Each panel of program memory contains write latches that hold 32 instructions of programming data. Prior to the actual programming operation, the write data must be loaded into the panel write latches. The data to be programmed into the panel is loaded in sequential order into the write latches; instruction `0', instruction `1', etc. The instruction words loaded must always be from a group of 32 boundary. The basic sequence for RTSP programming is to set up a table pointer, then do a series of TBLWT instructions to load the write latches. Programming is performed by setting the special bits in the NVMCON register. 32 TBLWTL and four TBLWTH instructions are required to load the 32 instructions. If multiple panel programming is required, the table pointer needs to be changed and the next set of multiple write latches written. All of the table write operations are single-word writes (2 instruction cycles), because only the table latches are written. A programming cycle is required for programming each row. The Flash Program Memory is readable, writable and erasable during normal operation over the entire VDD range. The four SFRs used to read and write the program Flash memory are: * * * * NVMCON NVMADR NVMADRU NVMKEY
7.5.1
NVMCON REGISTER
The NVMCON register controls which blocks are to be erased, which memory type is to be programmed and the start of the programming cycle.
7.5.2
NVMADR REGISTER
The NVMADR register is used to hold the lower two bytes of the effective address. The NVMADR register captures the EA<15:0> of the last table instruction that has been executed and selects the row to write.
7.5.3
NVMADRU REGISTER
The NVMADRU register is used to hold the upper byte of the effective address. The NVMADRU register captures the EA<23:16> of the last table instruction that has been executed.
7.5.4
NVMKEY REGISTER
NVMKEY is a write-only register that is used for write protection. To start a programming or an erase sequence, the user must consecutively write 0x55 and 0xAA to the NVMKEY register. Refer to Section 7.6 "Programming Operations" for further details. Note: The user can also directly write to the NVMADR and NVMADRU registers to specify a program memory address for erasing or programming.
DS70178A-page 82
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(c) 2006 Microchip Technology Inc.
dsPIC30F1010/202X
7.6 Programming Operations
4. A complete programming sequence is necessary for programming or erasing the internal Flash in RTSP mode. A programming operation is nominally 2 msec in duration and the processor stalls (waits) until the operation is finished. Setting the WR bit (NVMCON<15>) starts the operation, and the WR bit is automatically cleared when the operation is finished. ends. Write 32 instruction words of data from data RAM "image" into the program Flash write latches. Program 32 instruction words into program Flash. a) Setup NVMCON register for multi-word, program Flash, program and set WREN bit. b) Write `55' to NVMKEY. c) Write `AA' to NVMKEY. d) Set the WR bit. This will begin program cycle. e) CPU will stall for duration of the program cycle. f) The WR bit is cleared by the hardware when program cycle ends. Repeat steps 1 through 5 as needed to program desired amount of program Flash memory.
5.
7.6.1
PROGRAMMING ALGORITHM FOR PROGRAM FLASH
The user can erase and program one row of program Flash memory at a time. The general process is: 1. Read one row of program Flash (32 instruction words) and store into data RAM as a data "image". Update the data image with the desired new data. Erase program Flash row. a) Setup NVMCON register for multi-word, program Flash, erase and set WREN bit. b) Write address of row to be erased into NVMADRU/NVMDR. c) Write `55' to NVMKEY. d) Write `AA' to NVMKEY. e) Set the WR bit. This will begin erase cycle. f) CPU will stall for the duration of the erase cycle. g) The WR bit is cleared when erase cycle
2. 3.
6.
7.6.2
ERASING A ROW OF PROGRAM MEMORY
Example 7-1 shows a code sequence that can be used to erase a row (32 instructions) of program memory.
EXAMPLE 7-1:
ERASING A ROW OF PROGRAM MEMORY
write
; Setup NVMCON for erase operation, multi word ; program memory selected, and writes enabled MOV #0x4041,W0 ; ; MOV W0,NVMCON ; Init pointer to row to be ERASED MOV #tblpage(PROG_ADDR),W0 ; ; MOV W0,NVMADRU MOV #tbloffset(PROG_ADDR),W0 ; MOV W0, NVMADR ; DISI #5 ; ; MOV #0x55,W0 ; MOV W0,NVMKEY MOV #0xAA,W1 ; MOV W1,NVMKEY ; BSET NVMCON,#WR ; NOP ; NOP ;
Init NVMCON SFR
Initialize PM Page Boundary SFR Intialize in-page EA<15:0> pointer Intialize NVMADR SFR Block all interrupts with priority <7 for next 5 instructions Write the 0x55 key Write the 0xAA key Start the erase sequence Insert two NOPs after the erase command is asserted
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7.6.3 LOADING WRITE LATCHES
Example 7-2 shows a sequence of instructions that can be used to load the 96 bytes of write latches. 32 TBLWTL and 32 TBLWTH instructions are needed to load the write latches selected by the table pointer.
EXAMPLE 7-2:
LOADING WRITE LATCHES
; Set up a pointer to the first program memory location to be written ; program memory selected, and writes enabled MOV #0x0000,W0 ; ; Initialize PM Page Boundary SFR MOV W0,TBLPAG MOV #0x6000,W0 ; An example program memory address ; Perform the TBLWT instructions to write the latches ; 0th_program_word MOV #LOW_WORD_0,W2 ; MOV #HIGH_BYTE_0,W3 ; ; Write PM low word into program latch TBLWTL W2,[W0] ; Write PM high byte into program latch TBLWTH W3,[W0++] ; 1st_program_word MOV #LOW_WORD_1,W2 ; MOV #HIGH_BYTE_1,W3 ; ; Write PM low word into program latch TBLWTL W2,[W0] TBLWTH W3,[W0++] ; Write PM high byte into program latch ; 2nd_program_word MOV #LOW_WORD_2,W2 ; MOV #HIGH_BYTE_2,W3 ; ; Write PM low word into program latch TBLWTL W2, [W0] ; Write PM high byte into program latch TBLWTH W3, [W0++] * * * ; 31st_program_word MOV #LOW_WORD_31,W2 ; MOV #HIGH_BYTE_31,W3 ; ; Write PM low word into program latch TBLWTL W2, [W0] ; Write PM high byte into program latch TBLWTH W3, [W0++]
Note: In Example 7-2, the contents of the upper byte of W3 have no effect.
7.6.4
INITIATING THE PROGRAMMING SEQUENCE
For protection, the write initiate sequence for NVMKEY must be used to allow any erase or program operation to proceed. After the programming command has been executed, the user must wait for the programming time until programming is complete. The two instructions following the start of the programming sequence should be NOPs.
EXAMPLE 7-3:
DISI MOV MOV MOV MOV BSET NOP NOP #5
INITIATING A PROGRAMMING SEQUENCE
; Block all interrupts with priority <7 ; for next 5 instructions ; ; ; ; ; ; Write the 0x55 key Write the 0xAA key Start the erase sequence Insert two NOPs after the erase command is asserted
#0x55,W0 W0,NVMKEY #0xAA,W1 W1,NVMKEY NVMCON,#WR
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TABLE 7-1:
Bit 14 WREN -- NVMADR<15:0> -- -- -- -- -- -- -- -- KEY<7:0> -- -- -- -- -- -- NVMADR<23:16> -- -- -- TWRI -- PROGOP<6:0> WRERR Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 All RESETS 0000 0000 0000 0000 uuuu uuuu uuuu uuuu 0000 0000 uuuu uuuu 0000 0000 0000 0000
NVM REGISTER MAP
File Name
Addr.
Bit 15
NVMCON
0760
WR
NVMADR
0762
NVMADRU
0764
--
NVMKEY
0766
--
Legend:
u = uninitialized bit
(c) 2006 Microchip Technology Inc.
Note:
Refer to the "dsPIC30F Family Reference Manual" (DS70046) for descriptions of register bit fields.
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8.0 TIMER1 MODULE
Note: This data sheet summarizes features of this group of dsPIC30F devices and is not intended to be a complete reference source. For more information on the CPU, peripherals, register descriptions and general device functionality, refer to the "dsPIC30F Family Reference Manual" (DS70046).
16-bit Timer Mode: In the 16-bit Timer mode, the timer increments on every instruction cycle up to a match value, preloaded into the period register PR1, then resets to 0 and continues to count. When the CPU goes into the Idle mode, the timer will stop incrementing, unless the TSIDL (T1CON<13>) bit = 0. If TSIDL = 1, the timer module logic will resume the incrementing sequence upon termination of the CPU Idle mode. 16-bit Synchronous Counter Mode: In the 16-bit Synchronous Counter mode, the timer increments on the rising edge of the applied external clock signal, which is synchronized with the internal phase clocks. The timer counts up to a match value preloaded in PR1, then resets to 0 and continues. When the CPU goes into the Idle mode, the timer will stop incrementing, unless the respective TSIDL bit = 0. If TSIDL = 1, the timer module logic will resume the incrementing sequence upon termination of the CPU Idle mode. 16-bit Asynchronous Counter Mode: In the 16-bit Asynchronous Counter mode, the timer increments on every rising edge of the applied external clock signal. The timer counts up to a match value preloaded in PR1, then resets to `0' and continues. When the timer is configured for the Asynchronous mode of operation and the CPU goes into the Idle mode, the timer will stop incrementing if TSIDL = 1.
This section describes the 16-bit General Purpose (GP) Timer1 module and associated operational modes. Figure 8-1 depicts the simplified block diagram of the 16-bit Timer1 Module. Note: Timer1 is a `Type A' timer. Please refer to the specifications for a Type A timer in Section 21.0 "Electrical Characteristics" of this document.
The following sections provide a detailed description of the operational modes of the timers, including setup and control registers along with associated block diagrams. The Timer1 module is a 16-bit timer which can serve as the time counter for the real-time clock, or operate as a free running interval timer/counter. The 16-bit timer has the following modes: * 16-bit Timer * 16-bit Synchronous Counter * 16-bit Asynchronous Counter Further, the following operational characteristics are supported: * Timer gate operation * Selectable prescaler settings * Timer operation during CPU Idle and Sleep modes * Interrupt on 16-bit period register match or falling edge of external gate signal These operating modes are determined by setting the appropriate bit(s) in the 16-bit SFR, T1CON. Figure 8-1 presents a block diagram of the 16-bit timer module.
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FIGURE 8-1: 16-BIT TIMER1 MODULE BLOCK DIAGRAM (TYPE A TIMER)
PR1 Equal
Comparator x 16
TSYNC 1 Sync
Reset 0 1 TGATE
TMR1
(3)
0 T1IF Event Flag
Q Q
D CK
TGATE TCS TGATE
TON T1CK Gate Sync TCY 1X 01 00
TCKPS<1:0> 2 Prescaler 1, 8, 64, 256
8.1
Timer Gate Operation
8.3
The 16-bit timer can be placed in the Gated Time Accumulation mode. This mode allows the internal TCY to increment the respective timer when the gate input signal (T1CK pin) is asserted high. Control bit TGATE (T1CON<6>) must be set to enable this mode. The timer must be enabled (TON = 1) and the timer clock source set to internal (TCS = 0). When the CPU goes into the Idle mode, the timer will stop incrementing, unless TSIDL = 0. If TSIDL = 1, the timer will resume the incrementing sequence upon termination of the CPU Idle mode.
Timer Operation During Sleep Mode
During CPU Sleep mode, the timer will operate if: * The timer module is enabled (TON = 1) and * The timer clock source is selected as external (TCS = 1) and * The TSYNC bit (T1CON<2>) is asserted to a logic `0', which defines the external clock source as asynchronous When all three conditions are true, the timer will continue to count up to the period register and be reset to 0x0000. When a match between the timer and the period register occurs, an interrupt can be generated, if the respective timer interrupt enable bit is asserted.
8.2
Timer Prescaler
The input clock (FOSC/2 or external clock) to the 16-bit Timer, has a prescale option of 1:1, 1:8, 1:64, and 1:256 selected by control bits TCKPS<1:0> (T1CON<5:4>). The prescaler counter is cleared when any of the following occurs: * a write to the TMR1 register * clearing of the TON bit (T1CON<15>) * device Reset such as POR However, if the timer is disabled (TON = 0), then the timer prescaler cannot be reset since the prescaler clock is halted. TMR1 is not cleared when T1CON is written. It is cleared by writing to the TMR1 register.
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8.4 Timer Interrupt
The 16-bit timer has the ability to generate an interrupt on period match. When the timer count matches the period register, the T1IF bit is asserted and an interrupt will be generated, if enabled. The T1IF bit must be cleared in software. The timer interrupt flag T1IF is located in the IFS0 control register in the Interrupt Controller. When the Gated Time Accumulation mode is enabled, an interrupt will also be generated on the falling edge of the gate signal (at the end of the accumulation cycle). Enabling an interrupt is accomplished via the respective timer interrupt enable bit, T1IE. The timer interrupt enable bit is located in the IEC0 control register in the Interrupt Controller.
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TABLE 8-1:
Bit 13 Timer 1 Register Period Register 1 TSIDL -- -- -- -- -- -- TGATE TCKPS1 TCKPS0 -- TSYNC TCS -- Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Reset State uuuu uuuu uuuu uuuu 1111 1111 1111 1111 0000 0000 0000 0000
TIMER1 REGISTER MAP
SFR Name
Addr.
Bit 15
Bit 14
TMR1
0100
PR1
0102
T1CON
0104
TON
--
DS70178A-page 90
Legend:
u = uninitialized bit
dsPIC30F1010/202X
Note:
Refer to the "dsPIC30F Family Reference Manual" (DS70046) for descriptions of register bit fields.
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9.0 TIMER2/3 MODULE
Note: This data sheet summarizes features of this group of dsPIC30F devices and is not intended to be a complete reference source. For more information on the CPU, peripherals, register descriptions and general device functionality, refer to the "dsPIC30F Family Reference Manual" (DS70046).
For 32-bit timer/counter operation, Timer2 is the least significant word and Timer3 is the most significant word of the 32-bit timer. Note: For 32-bit timer operation, T3CON control bits are ignored. Only T2CON control bits are used for setup and control. Timer 2 clock and gate inputs are utilized for the 32-bit timer module, but an interrupt is generated with the Timer3 interrupt flag (T3IF) and the interrupt is enabled with the Timer3 interrupt enable bit (T3IE).
This section describes the 32-bit General Purpose (GP) Timer module (Timer2/3) and associated operational modes. Figure 9-1 depicts the simplified block diagram of the 32-bit Timer2/3 module. Figure 9-2 and Figure 9-3 show Timer2/3 configured as two independent 16-bit timers: Timer2 and Timer3, respectively. Note: The dsPIC30F1010 device does not feature Timer3. Timer2 is a `Type B' timer and Timer3 is a `Type C' timer. Please refer to the appropriate timer type in Section 21.0 "Electrical Characteristics" of this document.
16-bit Mode: In the 16-bit mode, Timer2 and Timer3 can be configured as two independent 16-bit timers. Each timer can be set up in either 16-bit Timer mode or 16-bit Synchronous Counter mode. See Section 8.0 "Timer1 Module" for details on these two operating modes. The only functional difference between Timer2 and Timer3 is that Timer2 provides synchronization of the clock prescaler output. This is useful for high-frequency external clock inputs. 32-bit Timer Mode: In the 32-bit Timer mode, the timer increments on every instruction cycle up to a match value, preloaded into the combined 32-bit period register PR3/PR2, then resets to `0' and continues to count. For synchronous 32-bit reads of the Timer2/Timer3 pair, reading the least significant word (TMR2 register) will cause the most significant word to be read and latched into a 16-bit holding register, termed TMR3HLD. For synchronous 32-bit writes, the holding register (TMR3HLD) must first be written to. When followed by a write to the TMR2 register, the contents of TMR3HLD will be transferred and latched into the MSB of the 32-bit timer (TMR3). 32-bit Synchronous Counter Mode: In the 32-bit Synchronous Counter mode, the timer increments on the rising edge of the applied external clock signal, which is synchronized with the internal phase clocks. The timer counts up to a match value preloaded in the combined 32-bit period register, PR3/PR2, then resets to `0' and continues. When the timer is configured for the Synchronous Counter mode of operation and the CPU goes into the Idle mode, the timer will stop incrementing, unless the TSIDL (T2CON<13>) bit = 0. If TSIDL = 1, the timer module logic will resume the incrementing sequence upon termination of the CPU Idle mode.
The Timer2/3 module is a 32-bit timer, which can be configured as two 16-bit timers, with selectable operating modes. These timers are utilized by other peripheral modules such as: * Input Capture * Output Compare/Simple PWM The following sections provide a detailed description, including setup and control registers, along with associated block diagrams for the operational modes of the timers. The 32-bit timer has the following modes: * Two independent 16-bit timers (Timer2 and Timer3) with all 16-bit operating modes (except Asynchronous Counter mode) * Single 32-bit Timer operation * Single 32-bit Synchronous Counter Further, the following operational characteristics are supported: * * * * * ADC Event Trigger Timer Gate Operation Selectable Prescaler Settings Timer Operation during Idle and Sleep modes Interrupt on a 32-bit Period Register Match
These operating modes are determined by setting the appropriate bit(s) in the 16-bit T2CON and T3CON SFRs.
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FIGURE 9-1: 32-BIT TIMER2/3 BLOCK DIAGRAM
Data Bus<15:0>
TMR3HLD 16 Write TMR2 Read TMR2 16 Reset TMR3 MSB ADC Event Trigger Equal Comparator x 32 TMR2 LSB Sync 16
PR3 0 T3IF Event Flag 1
PR2
Q Q
D CK
TGATE(T2CON<6>)
TGATE (T2CON<6>)
TCS TGATE
T2CK Gate Sync TCY
TON 1X 01 00
TCKPS<1:0> 2 Prescaler 1, 8, 64, 256
Note:
Timer Configuration bit T32, (T2CON<3>) must be set to `1' for a 32-bit timer/counter operation. All control bits are respective to the T2CON register.
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FIGURE 9-2: 16-BIT TIMER2 BLOCK DIAGRAM
PR2 Equal
Comparator x 16
Reset 0 1 TGATE
TMR2
Sync
T2IF Event Flag
Q Q
D CK
TGATE TCS TGATE
T2CK Gate Sync TCY
1X 01 00
TON
TCKPS<1:0> 2 Prescaler 1, 8, 64, 256
FIGURE 9-3:
16-BIT TIMER3 BLOCK DIAGRAM
PR3
ADC Event Trigger
Equal
Comparator x 16
Reset 0 1 TGATE
TMR3
T3IF Event Flag
Q Q
D CK
TGATE TCS TGATE
Sync See NOTE TCY
1X 01 00
TON
TCKPS<1:0> 2 Prescaler 1, 8, 64, 256
Note:
The dsPIC30F202X does not have an external pin input to TIMER3. The following modes should not be used: 1. TCS = 1 2. TCS = 0 and TGATE = 1 (gated time accumulation)
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9.1 Timer Gate Operation 9.4
The 32-bit timer can be placed in the Gated Time Accumulation mode. This mode allows the internal TCY to increment the respective timer when the gate input signal (T2CK pin) is asserted high. Control bit TGATE (T2CON<6>) must be set to enable this mode. When in this mode, Timer2 is the originating clock source. The TGATE setting is ignored for Timer3. The timer must be enabled (TON = 1) and the timer clock source set to internal (TCS = 0). The falling edge of the external signal terminates the count operation, but does not reset the timer. The user must reset the timer in order to start counting from zero.
Timer Operation During Sleep Mode
During CPU Sleep mode, the timer will not operate, because the internal clocks are disabled.
9.5
Timer Interrupt
9.2
ADC Event Trigger
The 32-bit timer module can generate an interrupt on period match, or on the falling edge of the external gate signal. When the 32-bit timer count matches the respective 32-bit period register, or the falling edge of the external "gate" signal is detected, the T3IF bit (IFS0<7>) is asserted and an interrupt will be generated if enabled. In this mode, the T3IF interrupt flag is used as the source of the interrupt. The T3IF bit must be cleared in software. Enabling an interrupt is accomplished via the respective timer interrupt enable bit, T3IE (IEC0<7>).
When a match occurs between the 32-bit timer (TMR3/ TMR2) and the 32-bit combined period register (PR3/ PR2), a special ADC trigger event signal is generated by Timer3.
9.3
Timer Prescaler
The input clock (FOSC/2 or external clock) to the timer has a prescale option of 1:1, 1:8, 1:64, and 1:256 selected by control bits TCKPS<1:0> (T2CON<5:4> and T3CON<5:4>). For the 32-bit timer operation, the originating clock source is Timer2. The prescaler operation for Timer3 is not applicable in this mode. The prescaler counter is cleared when any of the following occurs: * a write to the TMR2/TMR3 register * clearing either of the TON (T2CON<15> or T3CON<15>) bits to `0' * device Reset such as POR However, if the timer is disabled (TON = 0), then the Timer 2 prescaler cannot be reset, since the prescaler clock is halted. TMR2/TMR3 is not cleared when T2CON/T3CON is written.
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TABLE 9-1:
Bit 13 Timer2 Register Timer3 Holding Register (For 32-bit timer operations only) Timer3 Register Period Register 2 Period Register 3 TSIDL TSIDL -- -- -- -- -- -- TGATE TCKPS1 TCKPS0 -- -- TCS -- -- -- -- -- -- -- TGATE TCKPS1 TCKPS0 T32 -- TCS -- Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Reset State
TIMER2/3 REGISTER MAP
uuuu uuuu uuuu uuuu uuuu uuuu uuuu uuuu uuuu uuuu uuuu uuuu 1111 1111 1111 1111 1111 1111 1111 1111 0000 0000 0000 0000 0000 0000 0000 0000
SFR Name Addr.
Bit 15
Bit 14
TMR2
0106
TMR3HLD
0108
TMR3
010A
PR2
010C
PR3
010E
T2CON
0110
TON
--
T3CON
0112
TON
--
(c) 2006 Microchip Technology Inc.
Legend:
u = uninitialized bit
Note:
Refer to the "dsPIC30F Family Reference Manual" (DS70046) for descriptions of register bit fields.
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10.0 INPUT CAPTURE MODULE
The key operational features of the Input Capture module are: * Simple Capture Event mode * Timer2 and Timer3 mode selection * Interrupt on input capture event These operating modes are determined by setting the appropriate bits in the ICxCON register (where x = 1,2,...,N). The dsPIC DSC devices contain up to 8 capture channels, (i.e., the maximum value of N is 8). Note: The dsPIC30F1010 devices does not feature a Input Capture module. The dsPIC30F202X devices have one capture input - IC1. The naming of this capture channel is intentional and preserves software compatibility with other dsPIC DSC devices.
Note: This data sheet summarizes features of this group of dsPIC30F devices and is not intended to be a complete reference source. For more information on the CPU, peripherals, register descriptions and general device functionality, refer to the "dsPIC30F Family Reference Manual" (DS70046).
This section describes the Input Capture module and associated operational modes. The features provided by this module are useful in applications requiring Frequency (Period) and Pulse measurement. Figure 10-1 depicts a block diagram of the Input Capture module. Input capture is useful for such modes as: * Frequency/Period/Pulse Measurements * Additional sources of External Interrupts
FIGURE 10-1:
INPUT CAPTURE MODE BLOCK DIAGRAM
From GP Timer Module T2_CNT T3_CNT
16 ICx Pin Prescaler 1, 4, 16 3 Clock Synchronizer ICM<2:0> Mode Select ICBNE, ICOV ICI<1:0> ICxCON Interrupt Logic Edge Detection Logic FIFO R/W Logic ICxBUF
16 ICTMR
1
0
Data Bus
Set Flag ICxIF
Note:
Where `x' is shown, reference is made to the registers or bits associated to the respective input capture channels 1 through N.
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10.1 Simple Capture Event Mode
10.1.3
The simple capture events in the dsPIC30F product family are: * * * * * Capture every falling edge Capture every rising edge Capture every 4th rising edge Capture every 16th rising edge Capture every rising and falling edge
TIMER2 AND TIMER3 SELECTION MODE
The input capture module consists of up to 8 input capture channels. Each channel can select between one of two timers for the time base, Timer2 or Timer3. Selection of the timer resource is accomplished through SFR bit ICTMR (ICxCON<7>). Timer3 is the default timer resource available for the input capture module.
These simple Input Capture modes are configured by setting the appropriate bits ICM<2:0> (ICxCON<2:0>).
10.1.4
HALL SENSOR MODE
10.1.1
CAPTURE PRESCALER
There are four input capture prescaler settings, specified by bits ICM<2:0> (ICxCON<2:0>). Whenever the capture channel is turned off, the prescaler counter will be cleared. In addition, any Reset will clear the prescaler counter.
When the input capture module is set for capture on every edge, rising and falling, ICM<2:0> = 001, the following operations are performed by the input capture logic: * The input capture interrupt flag is set on every edge, rising and falling. * The Interrupt on Capture mode setting bits, ICI<1:0>, are ignored, since every capture generates an interrupt. * A Capture Overflow condition is not generated in this mode.
10.1.2
CAPTURE BUFFER OPERATION
Each capture channel has an associated FIFO buffer, which is four 16-bit words deep. There are two status flags, which provide status on the FIFO buffer: * ICBFNE - Input Capture Buffer Not Empty * ICOV - Input Capture Overflow The ICBFNE will be set on the first input capture event and remain set until all capture events have been read from the FIFO. As each word is read from the FIFO, the remaining words are advanced by one position within the buffer. In the event that the FIFO is full with four capture events and a fifth capture event occurs prior to a read of the FIFO, an Overflow condition will occur and the ICOV bit will be set to a logic `1'. The fifth capture event is lost and is not stored in the FIFO. No additional events will be captured until all four events have been read from the buffer. If a FIFO read is performed after the last read and no new capture event has been received, the read will yield indeterminate results.
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10.2 Input Capture Operation During Sleep and Idle Modes
10.2.2 INPUT CAPTURE IN CPU IDLE MODE
CPU Idle mode allows input capture module operation with full functionality. In the CPU Idle mode, the Interrupt mode selected by the ICI<1:0> bits are applicable, as well as the 4:1 and 16:1 capture prescale settings, which are defined by control bits ICM<2:0>. This mode requires the selected timer to be enabled. Moreover, the ICSIDL bit must be asserted to a logic `0'. If the input capture module is defined as ICM<2:0> = 111 in CPU Idle mode, the input capture pin will serve only as an external interrupt pin.
An input capture event will generate a device wake-up or interrupt, if enabled, if the device is in CPU Idle or Sleep mode. Independent of the timer being enabled, the input capture module will wake-up from the CPU Sleep or Idle mode when a capture event occurs, if ICM<2:0> = 111 and the interrupt enable bit is asserted. The same wake-up can generate an interrupt, if the conditions for processing the interrupt have been satisfied. The wake-up feature is useful as a method of adding extra external pin interrupts.
10.3
Input Capture Interrupts
10.2.1
INPUT CAPTURE IN CPU SLEEP MODE
CPU Sleep mode allows input capture module operation with reduced functionality. In the CPU Sleep mode, the ICI<1:0> bits are not applicable, and the input capture module can only function as an external interrupt source. The capture module must be configured for interrupt only on the rising edge (ICM<2:0> = 111), in order for the input capture module to be used while the device is in Sleep mode. The prescale settings of 4:1 or 16:1 are not applicable in this mode.
The input capture channels have the ability to generate an interrupt, based upon the selected number of capture events. The selection number is set by control bits ICI<1:0> (ICxCON<6:5>). Each channel provides an interrupt flag (ICxIF) bit. The respective capture channel interrupt flag is located in the corresponding IFSx STATUS register. Enabling an interrupt is accomplished via the respective capture channel interrupt enable (ICxIE) bit. The capture interrupt enable bit is located in the corresponding IEC Control register.
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TABLE 10-1:
Bit 13 Input 1 Capture Register ICSIDL -- -- -- -- -- ICTMR ICI<1:0> ICOV ICBNE ICM<2:0> Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Reset State uuuu uuuu uuuu uuuu 0000 0000 0000 0000
INPUT CAPTURE REGISTER MAP
SFR Name
Addr.
Bit 15
Bit 14
IC1BUF
0140
IC1CON
0142
--
--
Legend:
u = uninitialized bit
DS70178A-page 100
dsPIC30F1010/202X
Note:
Refer to the "dsPIC30F Family Reference Manual" (DS70046) for descriptions of register bit fields.
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11.0 OUTPUT COMPARE MODULE
The key operational features of the Output Compare module include: * * * * * * Timer2 and Timer3 Selection mode Simple Output Compare Match mode Dual Output Compare Match mode Simple PWM mode Output Compare during Sleep and Idle modes Interrupt on Output Compare/PWM Event
Note: This data sheet summarizes features of this group of dsPIC30F devices and is not intended to be a complete reference source. For more information on the CPU, peripherals, register descriptions and general device functionality, refer to the "dsPIC30F Family Reference Manual" (DS70046).
This section describes the Output Compare module and associated operational modes. The features provided by this module are useful in applications requiring operational modes such as: * Generation of Variable Width Output Pulses * Power Factor Correction Figure 11-1 depicts a block diagram of the Output Compare module.
These operating modes are determined by setting the appropriate bits in the 16-bit OCxCON SFR (where x = 1 and 2). OCxRS and OCxR in the figure represent the Dual Compare registers. In the Dual Compare mode, the OCxR register is used for the first compare and OCxRS is used for the second compare.
FIGURE 11-1:
OUTPUT COMPARE MODE BLOCK DIAGRAM
Set Flag bit OCxIF
OCxRS
OCxR
Output Logic 3
SQ R Output Enable
OCx
Comparator 1 OCTSEL
OCM<2:0> Mode Select
OCFLTA
0
0
1
From GP Timer Module TMR2<15:0 TMR3<15:0> T2P2_MATCH T3P3_MATCH
Note:
Where `x' is shown, reference is made to the registers associated with the respective output compare channels 1 and 2.
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11.1 Timer2 and Timer3 Selection Mode
11.3.2 CONTINUOUS PULSE MODE
Each output compare channel can select between one of two 16-bit timers: Timer2 or Timer3. The selection of the timers is controlled by the OCTSEL bit (OCxCON<3>). Timer2 is the default timer resource for the Output Compare module. For the user to configure the module for the generation of a continuous stream of output pulses, the following steps are required: * Determine instruction cycle time TCY. * Calculate desired pulse value based on TCY. * Calculate timer to start pulse width from timer start value of 0x0000. * Write pulse width start and stop times into OCxR and OCxRS (x denotes channel 1, 2) compare registers, respectively. * Set timer period register to value equal to, or greater than, value in OCxRS compare register. * Set OCM<2:0> = 101. * Enable timer, TON (TxCON<15>) = 1.
11.2
Simple Output Compare Match Mode
When control bits OCM<2:0> (OCxCON<2:0>) = 001, 010 or 011, the selected output compare channel is configured for one of three simple Output Compare Match modes: * Compare forces I/O pin low * Compare forces I/O pin high * Compare toggles I/O pin The OCxR register is used in these modes. The OCxR register is loaded with a value and is compared to the selected incrementing timer count. When a compare occurs, one of these Compare Match modes occurs. If the counter resets to zero before reaching the value in OCxR, the state of the OCx pin remains unchanged.
11.4
Simple PWM Mode
When control bits OCM<2:0> (OCxCON<2:0>) = 110 or 111, the selected output compare channel is configured for the PWM mode of operation. When configured for the PWM mode of operation, OCxR is the Main latch (read-only) and OCxRS is the secondary latch. This enables glitchless PWM transitions. The user must perform the following steps in order to configure the output compare module for PWM operation: 1. 2. 3. 4. Set the PWM period by writing to the appropriate period register. Set the PWM duty cycle by writing to the OCxRS register. Configure the output compare module for PWM operation. Set the TMRx prescale value and enable the Timer, TON (TxCON<15>) = 1.
11.3
Dual Output Compare Match Mode
When control bits OCM<2:0> (OCxCON<2:0>) = 100 or 101, the selected output compare channel is configured for one of two Dual Output Compare modes, which are: * Single Output Pulse mode * Continuous Output Pulse mode
11.3.1
SINGLE PULSE MODE
For the user to configure the module for the generation of a single output pulse, the following steps are required (assuming the timer is off): * Determine instruction cycle time TCY. * Calculate desired pulse width value based on TCY. * Calculate time to start pulse from timer start value of 0x0000. * Write pulse width start and stop times into OCxR and OCxRS compare registers (x denotes channel 1, 2). * Set timer period register to value equal to, or greater than, value in OCxRS compare register. * Set OCM<2:0> = 100. * Enable timer, TON (TxCON<15>) = 1. To initiate another single pulse, issue another write to set OCM<2:0> = 100.
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11.4.1 PWM PERIOD
11.5
The PWM period is specified by writing to the PRx register. The PWM period can be calculated using Equation 11-1.
Output Compare Operation During CPU Sleep Mode
EQUATION 11-1:
PWM PERIOD
PWM period = [(PRx) + 1] * 4 * TOSC * (TMRx prescale value) PWM frequency is defined as 1 / [PWM period]. When the selected TMRx is equal to its respective period register, PRx, the following four events occur on the next increment cycle: * TMRx is cleared. * The OCx pin is set. - Exception 1: If PWM duty cycle is 0x0000, the OCx pin will remain low. - Exception 2: If duty cycle is greater than PRx, the pin will remain high. * The PWM duty cycle is latched from OCxRS into OCxR. * The corresponding timer interrupt flag is set. See Figure 11-1 for key PWM period comparisons. Timer3 is referred to in the figure for clarity.
When the CPU enters the Sleep mode, all internal clocks are stopped. Therefore, when the CPU enters the Sleep state, the output compare channel will drive the pin to the active state that was observed prior to entering the CPU Sleep state. For example, if the pin was high when the CPU entered the Sleep state, the pin will remain high. Likewise, if the pin was low when the CPU entered the Sleep state, the pin will remain low. In either case, the output compare module will resume operation when the device wakes up.
11.6
Output Compare Operation During CPU Idle Mode
When the CPU enters the Idle mode, the output compare module can operate with full functionality. The output compare channel will operate during the CPU Idle mode if the OCSIDL bit (OCxCON<13>) is at logic `0' and the selected time base (Timer2 or Timer3) is enabled and the TSIDL bit of the selected timer is set to logic `0'.
11.4.2
PWM WITH FAULT PROTECTION INPUT PIN
When control bits OCM<2:0> (OCxCON<2:0>) = 111, Fault protection is enabled via the OCFLTA pin. If the a logic `0' is detected on the OCFLTA pin, the output pins are placed in a high-impedance state. The state remains until: * the external Fault condition has been removed and * the PWM mode is reenabled by writing to the appropriate control bits As a result of the Fault condition, the OCxIF interrupt is asserted, and an interrupt will be generated, if enabled. Upon detection of the Fault condition, the OCFLTx bit in the OCxCON register is asserted high. This bit is a read-only bit and will be cleared once the external Fault condition has been removed, and the PWM mode is reenabled by writing the appropriate mode bits, OCM<2:0> in the OCxCON register.
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FIGURE 11-1: PWM OUTPUT TIMING
Period
Duty Cycle
TMR3 = PR3 T3IF = 1 (Interrupt Flag) OCxR = OCxRS
TMR3 = PR3 T3IF = 1 (Interrupt Flag) OCxR = OCxRS TMR3 = Duty Cycle (OCxR) TMR3 = Duty Cycle (OCxR)
11.7
Output Compare Interrupts
The output compare channels have the ability to generate an interrupt on a compare match, for whichever Match mode has been selected. For all modes except the PWM mode, when a compare event occurs, the respective interrupt flag (OCxIF) is asserted and an interrupt will be generated, if enabled. The OCxIF bit is located in the corresponding IFS STATUS register, and must be cleared in software. The interrupt is enabled via the respective compare interrupt enable (OCxIE) bit, located in the corresponding IEC Control register. For the PWM mode, when an event occurs, the respective timer interrupt flag (T2IF or T3IF) is asserted and an interrupt will be generated, if enabled. The IF bit is located in the IFS0 STATUS register, and must be cleared in software. The interrupt is enabled via the respective timer interrupt enable bit (T2IE or T3IE), located in the IEC0 Control register. The output compare interrupt flag is never set during the PWM mode of operation.
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TABLE 11-1:
Bit 13 Output Compare 1 Master Register Output Compare 1 Slave Register OCSIDL Output Compare 2 Master Register Output Compare 2 Slave Register OCSIDL -- -- -- -- -- -- -- -- OCFLT2 OCTSEL2 OCM<2:0> -- -- -- -- -- -- -- -- OCFLT1 OCTSEL1 OCM<2:0> Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Reset State
OUTPUT COMPARE REGISTER MAP
0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
SFR Name
Addr.
Bit 15
Bit 14
OC1RS
0180
OC1R
0182
OC1CON
0184
--
--
OC2RS
0186
OC2R
0188
OC2CON
018A
--
--
(c) 2006 Microchip Technology Inc.
Note:
Refer to the "dsPIC30F Family Reference Manual" (DS70046) for descriptions of register bit fields.
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NOTES:
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dsPIC30F1010/202X
12.0 POWER SUPPLY PWM
12.2 Description
The PWM module on the dsPIC30F1010/202X device supports a wide variety of PWM modes and output formats. This PWM module is ideal for power conversion applications such as: * DC/DC converters * AC/DC power supplies * Uninterruptable Power Supply (UPS) The PS PWM module is designed for applications that require (a) high resolution at high PWM frequencies, (b) the ability to drive standard push-pull or half bridge converters or (c) the ability to create multi-phase PWM outputs. Two common, medium-power converter topologies are Push-Pull and Half-Bridge. These designs require the PWM output signal to be switched between alternate pins, as provided by the Push-Pull PWM mode. Phase-shifted PWM describes the situation where each PWM generator provides outputs, but the phase relationship between the generator outputs is specifiable and changeable. Multi-Phase PWM is often used to improve DC-DC converter load transient response, and reduce the size of output filter capacitors and inductors. Multiple DC/ DC converters are often operated in parallel but phase shifted in time. A single PWM output operating at 250 KHz has a period of 4 sec. But an array of four PWM channels, staggered by 1 sec each, yields an effective switching frequency of 1 MHz. Multi-phase PWM applications typically use a fixed-phase relationship. Variable Phase PWM is useful in Zero Voltage Transition (ZVT) power converters. Here the PWM duty cycle is always 50%, and the power flow is controlled by varying the relative phase shift between the two PWM generators.
12.1
* * * * * * *
Features Overview
The PS PWM module incorporates these features: Four PWM generators with eight I/O Four Independent time bases Duty cycle resolution of 1.1 nsec @ 30 MIPS Dead-time resolution of 4.2 nsec @ 30 MIPS Phase-shift resolution of 4.2 nsec @ 30 MIPS Frequency resolution of 8.4 nsec @ 30 MIPS Supported PWM modes: - Standard Edge-Aligned PWM - Complementary PWM - Push-Pull PWM - Multi-Phase PWM - Variable Phase PWM - Fixed Off-Time PWM - Current Reset PWM - Current-Limit PWM - Independent Time Base PWM On-the-Fly changes to: - PWM frequency - PWM duty cycle - PWM phase shift Output override control Independent current-limit and Fault inputs Special event comparator for scheduling other peripheral events Each PWM generator has comparator for triggering ADC conversions.
*
Note: The PLL must be enabled for the PS PWM module to function. This is achieved by using the FNOSC<1:0> bits in the FOSCSEL Configuration register.
* * * *
Figure 12-1 conceptualizes the PWM module in a simplified block diagram. Figure 12-2 illustrates how the module hardware is partitioned for each PWM output pair for the Complementary PWM mode. Each functional unit of the PWM module is discussed in subsequent sections. The PWM module contains four PWM generators. The module has eight PWM output pins: PWM1H, PWM1L, PWM2H, PWM2L, PWM3H, PWM3L, PWM4H and PWM4L. For complementary outputs, these eight I/O pins are grouped into H/L pairs.
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FIGURE 12-1: SIMPLIFIED CONCEPTUAL BLOCK DIAGRAM OF POWER SUPPLY PWM
PWMCONx LEBCONx TRGCONx ALTDTRx, DTRx PTCON Pin and mode control Control for blanking external input signals ADC Trigger Control Dead-time Control PWM enable and mode control
MDC PDC1 MUX Latch Comparator Timer Phase PDC2 MUX Latch 16-bit Data Bus Comparator Timer Phase PDC3 MUX Latch Comparator Timer Phase PDC4 MUX Latch Comparator Timer Phase PTPER Timer Period Master Time Base Fault Control Logic SFLTX IFLTX Channel 4 Dead-time Generator PWM4H PWM4L PWM GEN #4 PWM GEN #3 PWM GEN #2 PWM User, Current Limit and Fault Override and Routing Logic PWM GEN #1 Channel 1 Dead-time Generator PWM1H PWM1L Master Duty Cycle Reg
Channel 2 Dead-time Generator Fault CLMT Override Logic
PWM2H PWM2L
Channel 3 Dead-time Generator
PWM3H PWM3L
PTMR Comparator SEVTCMP IOCONx FLTCONx Special event comparison value Pin override control Fault mode and pin control Special Event Postscaler Special event trigger
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FIGURE 12-2: PARTITIONED OUTPUT PAIR, COMPLEMENTARY PWM MODE
Phase Offset TMR < PDC Timer/Counter PWM Override Logic Duty Cycle Comparator M U X PWMXL Dead Time Logic
M U X
PWMXH
PWM Duty Cycle Register
Channel override values
Fault Override Values Fault Active
Fault Pin
Fault Pin Assignment Logic
12.3
Control Registers
The following registers control the operation of the Power Supply PWM Module. * * * * * * * * * * * * PTCON: PWM Time Base Control Register PTPER: Primary Time Base Register SEVTCMP: PWM Special Event Register MDC: PWM Master Duty Cycle Register(1) PWMCONx: PWM Control Register PDCx: PWM Generator Duty Cycle Register(1) PHASEx: PWM Phase-Shift Register DTRx: PWM Dead-Time Register ALTDTRx: PWM Alternate Dead-Time Register TRGCONx: PWM TRIGGER Control Register IOCONx: PWM I/O Control Register FCLCONx: PWM Fault Current-Limit Control Register * TRIGx: PWM Trigger Compare Value Register * LEBCONx: Leading Edge Blanking Control Register
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REGISTER 12-1:
R/W-0 PTEN bit 15 R/W-0 SYNCEN bit 7 Legend: R = Readable bit -n = Value at POR bit 15 W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown R/W-0 R/W-0 SYNCSRC<2:0> R/W-0 R/W-0 R/W-0 R/W-0
PTCON: PWM TIME BASE CONTROL REGISTER
U-0 -- R/W-0 PTSIDL R/W-0 SESTAT R/W-0 SEIEN R/W-0 EIPU R/W-0 SYNCPOL R/W-0 SYNCOEN bit 8 R/W-0 bit 0
SEVTPS<3:0>
PTEN: PWM Module Enable bit 1 = PWM module is enabled 0 = PWM module is disabled Unimplemented: Read as `0' PTSIDL: PWM Time Base Stop in Idle Mode bit 1 = PWM time base halts in CPU Idle mode 0 = PWM time base runs in CPU Idle mode SESTAT: Special Event Interrupt Status bit 1 = Special Event Interrupt is pending 0 = Special Event Interrupt is not pending SEIEN: Special Event Interrupt Enable bit 1 = Special Event Interrupt is enabled 0 = Special Event Interrupt is disabled EIPU: Enable Immediate Period Updates bit 1 = Active Period register is updated immediately 0 = Active Period register updates occur on PWM cycle boundaries SYNCPOL: Synchronize Input Polarity bit 1 = SYNCIN polarity is inverted (low active) 0 = SYNCIN is high active SYNCOEN: Primary Time Base Sync Enable bit 1 = SYNCO output is enabled 0 = SYNCO output is disabled SYNCEN: External Time Base Synchronization Enable bit 1 = External synchronization of primary time base is enabled 0 = External synchronization of primary time base is disabled SYNCSRC<2:0>: Sync Source Selection bits 000 = SYNCI 001 = Reserved
bit 14 bit 13
bit 12
bit 11
bit 10
bit 9
bit 8
bit 7
bit 6-4
. .
111 = Reserved bit 3-0 SEVTPS<3:0>: PWM Special Event Trigger Output Postscale Select bits 0000 = 1:1 Postscale 0001 = 1:2 Postscale || || 1111 = 1:16 Postscale
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REGISTER 12-2:
R/W-0 bit 15 R/W-0 bit 7 Legend: R = Readable bit -n = Value at POR bit 15-3 bit 2-0 W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown R/W-0 R/W-0 PTPER <7:3> R/W-0 R/W-0 U-0 -- U-0 -- U-0 -- bit 0
PTPER: PRIMARY TIME BASE REGISTER
R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 bit 8 PTPER <15:8>
Primary Time Base (PTMR) Period Value bits Unimplemented: Read as `0'
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REGISTER 12-3:
R/W-0 bit 15 R/W-0 bit 7 Legend: R = Readable bit -n = Value at POR bit 15-3 bit 2-0 W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown R/W-0 R/W-0 SEVTCMP <7:3> R/W-0 R/W-0 U-0 -- U-0 -- U-0 -- bit 0
SEVTCMP: PWM SPECIAL EVENT REGISTER
R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 bit 8 SEVTCMP <15:8>
Special Event Compare Count Value bits Unimplemented: Read as `0'
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REGISTER 12-4:
R/W-0 bit 15 R/W-0 bit 7 Legend: R = Readable bit -n = Value at POR bit 15-0 W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
MDC: PWM MASTER DUTY CYCLE REGISTER(1)
R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 bit 8 R/W-0 bit 0 MDC<15:8>
MDC<7:0>
Master PWM Duty Cycle Value bits
Note 1: The minimum value for this register is 0x0008 and the maximum value is 0xFFEF.
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REGISTER 12-5:
HS/HC-0 FLTSTAT bit 15 R/W-0 bit 7 Legend: R = Readable bit -n = Value at POR bit 15 W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown R/W-0 U-0 -- U-0 -- U-0 -- U-0 -- R/W-0 XPRES
PWMCONx: PWM CONTROL REGISTER
HS/HC-0 TRGSTAT R/W-0 FLTIEN R/W-0 CLIEN R/W-0 TRGIEN R/W-0 ITB R/W-0 MDCS bit 8 R/W-0 IUE bit 0
HS/HC-0 CLSTAT
DTC<1:0>
FLTSTAT: Fault Interrupt Status 1 = Fault Interrupt is pending 0 = No Fault Interrupt is pending This bit is cleared by setting FLTIEN = 0. Note: Software must clear the interrupt status here, and the corresponding IFS bit in Interrupt Controller.
bit 14
CLSTAT: Current-Limit Interrupt Status bit 1 = Current-limit interrupt is pending 0 = No current-limit interrupt is pending This bit is cleared by setting CLIEN = 0. Note: Software must clear the interrupt status here, and the corresponding IFS bit in Interrupt Controller.
bit 13
TRIGIEN: Trigger Interrupt Status bit 1 = Trigger interrupt is pending 0 = No trigger interrupt is pending This bit is cleared by setting TRGIEN = 0. FLTIEN: Fault Interrupt Enable bit 1 = Fault interrupt enabled 0 = Fault interrupt disabled and FLTSTAT bit is cleared CLIEN: Current-Limit Interrupt Enable bit 1 = Current-limit interrupt enabled 0 = Current-limit interrupt disabled and CLSTAT bit is cleared TRIGIEN: Trigger Interrupt Enable bit 1 = A trigger event generates an interrupt request 0 = Trigger event interrupts are disabled and TRGSTAT bit is cleared ITB: Independent Time Base Mode bit 0 = Primary time base provides timing for this PWM generator 1 = Phasex register provides time base period for this PWM generator MDCS: Master Duty Cycle Register Select bit 0 = DCx register provides duty cycle information for this PWM generator 1 = MDC register provides duty cycle information for this PWM generator DTC<1:0>: Dead-time Control bits 00 = Positive dead time actively applied for all output modes 01 = Negative dead time actively applied for all output modes 10 = Dead-time function is disabled 11 = Reserved Unimplemented: Read as `0'
bit 12
bit 11
bit 10
bit 9
bit 8
bit 7-6
bit 5-2
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REGISTER 12-5:
bit 1
PWMCONx: PWM CONTROL REGISTER (CONTINUED)
XPRES: External PWM Reset Control bit 1 = Current-limit source resets time base for this PWM generator if it is in independent time base mode 0 = External pins do not affect PWM time base IUE: Immediate Update Enable bit 1 = Updates to the active PDC registers are immediate 0 = Updates to the active PDC registers are synchronized to the PWM time base
bit 0
REGISTER 12-6:
R/W-0 bit 15 R/W-0 bit 7 Legend: R = Readable bit -n = Value at POR bit 15-0
PDCx: PWM GENERATOR DUTY CYCLE REGISTER(1)
R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 bit 8 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 bit 0 PDCx<15:8>
PDCx<7:0>
W = Writable bit `1' = Bit is set
U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown
PWM Generator #x Duty Cycle Value bits
Note 1: The minimum value for this register is 0x0008 and the maximum value is 0xFFEF.
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REGISTER 12-7:
R/W-0 bit 15 R/W-0 bit 7 Legend: R = Readable bit -n = Value at POR bit 15-2 bit 1-0 W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 U-0 -- U-0 -- bit 0
PHASEx: PWM PHASE-SHIFT REGISTER
R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 bit 8 PHASEx<15:8>
PHASEx<7:2>
PHASEx<15:2>: PWM Phase-Shift Value or Independent Time Base Period for this PWM Generator bits Note: If used as an independent time base, bits <3:2> are not used. Unimplemented: Read as `0'
REGISTER 12-8:
U-0 -- bit 15 R/W-0 bit 7 Legend: R = Readable bit -n = Value at POR bit 15-14 bit 13-2 bit 1-0
DTRx: PWM DEAD-TIME REGISTER
U-0 -- R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 bit 8 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 U-0 -- U-0 -- bit 0 DTRx<13:8>
DTRx<7:2>
W = Writable bit `1' = Bit is set
U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown
Unimplemented: Read as `0' DTRx<13:2>: Unsigned 11-bit Dead-Time Value bits for PWMx Dead-Time Unit Unimplemented: Read as `0'
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REGISTER 12-9:
R/W-0 -- bit 15 R/W-0 bit 7 Legend: R = Readable bit -n = Value at POR bit 15-14 bit 13-2 bit 1-0 W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 U-0 -- U-0 -- bit 0
ALTDTRx: PWM ALTERNATE DEAD-TIME REGISTER
R/W-0 -- R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 bit 8 ALTDTRx<13:8>
ALTDTR <7:2>
Unimplemented: Read as `0' ALTDTRx<13:2>: Unsigned 11-bit Dead-Time Value bits for PWMx Dead-Time Unit Unimplemented: Read as `0'
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dsPIC30F1010/202X
REGISTER 12-10: TRGCONx: PWM TRIGGER CONTROL REGISTER
R/W-0 bit 15 U-0 -- bit 7 Legend: R = Readable bit -n = Value at POR bit 15-13 W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown U-0 -- R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 TRGDIV<2:0> R/W-0 U-0 -- U-0 -- U-0 -- U-0 -- U-0 -- bit 8 R/W-0 bit 0
TRGSTRT<5:0>
TRGDIV<2:0>: Trigger Output Divider 000 = Trigger output for every trigger event 001 = Trigger output for every 2nd trigger event 010 = Trigger output for every 3rd trigger event 011 = Trigger output for every 4th trigger event 100 = Trigger output for every 5th trigger event 101 = Trigger output for every 6th trigger event 110 = Trigger output for every 7th trigger event 111 = Trigger output for every 8th trigger event Unimplemented: Read as `0' TRGSTRT<5:0>: Trigger Postscaler Start Enable Select bits This value specifies the ROLL counter value needed for a match that will then enable the trigger postscaler logic to begin counting trigger events.
bit 12-6 bit 5-0
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REGISTER 12-11: IOCONx: PWM I/O CONTROL REGISTER
R/W-0 PENH bit 15 R/W-0 bit 7 Legend: R = Readable bit -n = Value at POR bit 15 W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 U-0 -- R/W-0 PENL R/W-0 POLH R/W-0 POLL R/W-0 R/W-0 R/W-0 OVRENH R/W-0 OVRENL bit 8 R/W-0 OSYNC bit 0 PMOD<1:0>
OVRDAT<1:0>
FLTDAT<1:0>
CLDAT<1:0>
PENH: PWMH Output Pin Ownership bit 1 = PWM module controls PWMxH pin 0 = GPIO module controls PWMxH pin PENL: PWML Output Pin Ownership bit 1 = PWM module controls PWMxL pin 0 = GPIO module controls PWMxL pin POLH: PWMH Output Pin Polarity bit 0 = PWMxH pin is high active 1 = PWMxH pin is low active POLL: PWML Output Pin Polarity bit 0 = PWMxL pin is high active 1 = PWMxL pin is low active PMOD<1:0>: PWM #x I/O Pin Mode bits 00 = PWM I/O pin pair is in the Complementary Output mode 01 = PWM I/O pin pair is in the Independent Output mode 10 = PWM I/O pin pair is in the Push-Pull Output mode 11 = Reserved OVRENH: Override Enable for PWMxH Pin bit 0 = PWM generator provides data for PWMxH pin 1 = OVRDAT[1] provides data for output on PWMxH pin OVRENL: Override Enable for PWMxL Pin bit 0 = PWM generator provides data for PWMxL pin 1 = OVRDAT[0] provides data for output on PWMxL pin OVRDAT<1:0>: Data for PWMxH,L Pins if Override is Enabled bits If OVERENH = 1 then OVRDAT<1> provides data for PWMxH If OVERENL = 1 then OVRDAT<0> provides data for PWMxL FLTDAT<1:0>: Data for PWMxH,L Pins if FLTMODE is Enabled bits If Fault active, then FLTDAT<1> provides data for PWMxH If Fault active, then FLTDAT<0> provides data for PWMxL CLDAT<1:0>: Data for PWMxH,L Pins if CLMODE is Enabled bits If current limit active, then CLDAT<1> provides data for PWMxH If current limit active, then CLDAT<0> provides data for PWMxL Unimplemented: Read as `0' OSYNC: Output Override Synchronization bit 1 = Output overrides via the OVRDAT<1:0> bits are synchronized to the PWM time base 0 = Output overrides via the OVDDAT<1:0> bits occur on next clock boundary
bit 14
bit 13
bit 12
bit 11-10
bit 9
bit 8
bit 7-6
bit 5-4
bit 3-2
bit 1 bit 0
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REGISTER 12-12: FCLCONx: PWM FAULT CURRENT-LIMIT CONTROL REGISTER
U-0 -- bit 15 R/W-0 CLMODE bit 7 Legend: R = Readable bit -n = Value at POR bit 15-13 bit 12-9 W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 FLTPOL R/W-0 U-0 -- U-0 -- R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 CLPOL bit 8 R/W-0 bit 0 CLSRC<3:0>
FLTSRC<3:0>
FLTMOD<1:0>
Unimplemented: Read as `0' CLSRC<3:0>: Current-Limit Control Signal Source Select for PWM #X Generator bits 0000 = Analog Comparator #1 0001 = Analog Comparator #2 0010 = Analog Comparator #3 0011 = Analog Comparator #4 0100 = 0101 = 0110 = 0111 = 1000 = 1001 = 1020 = 1011 = 1100 = 1101 = 1110 = 1111 = Reserved Reserved Reserved Reserved Shared Fault #1 (SFLT1) Shared Fault #2 (SFLT2) Shared Fault #3 (SFLT3) Shared Fault #4 (SFLT4) Reserved Independent Fault #2 (IFLT2) Reserved Independent Fault #4 (IFLT4)
bit 8
CLPOL: Current-Limit Polarity for PWM Generator #X bit 0 = The selected current-limit source is high active 1 = The selected current-limit source is low active CLMODE: Current-Limit Mode Enable for PWM Generator #X bit 1 = Current-limit function is enabled 0 = Current-limit function is disabled
bit 7
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REGISTER 12-12: FCLCONx: PWM FAULT CURRENT-LIMIT CONTROL REGISTER (CONTINUED)
bit 6-3 FLTSRC<3:0>: Fault Control Signal Source Select for PWM Generator #X bits 0000 = Analog Comparator #1 0001 = Analog Comparator #2 0010 = Analog Comparator #3 0011 = Analog Comparator #4 0100 = 0101 = 0110 = 0111 = 1000 = 1001 = 1020 = 1011 = 1100 = 1101 = 1110 = 1111 = bit 2 Reserved Reserved Reserved Reserved Shared Fault #1 (SFLT1) Shared Fault #2 (SFLT2) Shared Fault #3 (SFLT3) Shared Fault #4 (SFLT4) Reserved Independent Fault #2 (IFLT2) Reserved Independent Fault #4 (IFLT4)
FLTPOL: Fault Polarity for PWM Generator #X bit 0 = The selected Fault source is high active 1 = The selected Fault source is low active FLTMOD<1:0>: Fault Mode for PWM Generator #x bits 00 = Reserved 01 = The selected Fault source forces PWMxH, PWMxL pins to FLTDAT values (cycle) 10 = Reserved 11 = Fault input is disabled
bit 1-0
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REGISTER 12-13: TRIGx: PWM TRIGGER COMPARE VALUE REGISTER
R/W-0 bit 15 R/W-0 bit 7 Legend: R = Readable bit -n = Value at POR bit 15-3 W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown R/W-0 R/W-0 TRGCMP<7:3> R/W-0 R/W-0 U-0 -- U-0 -- U-0 -- bit 0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 bit 8 TRGCMP<15:8>
TRGCMP<15:3>: Trigger Control Value bits Register contains the compare value for PWMx time base for generating a trigger to the ADC module for initiating a sample and conversion process, or generating a trigger interrupt. Unimplemented: Read as `0'
bit 2-0
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REGISTER 12-14: LEBCONx: LEADING EDGE BLANKING CONTROL REGISTER
R/W-0 PHR bit 15 R/W-0 bit 7 Legend: R = Readable bit -n = Value at POR bit 15 W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown R/W-0 R/W-0 LEB<7:3> R/W-0 R/W-0 U-0 -- U-0 -- U-0 -- bit 0 R/W-0 PHF R/W-0 PLR R/W-0 PLF R/W-0 FLTLEBEN R/W-0 CLLEBEN R/W-0 R/W-0 bit 8 LEB<9:8>
PHR: PWMH Rising Edge Trigger Enable bit 1 = Rising edge of PWMH will trigger LEB counter 0 = LEB ignores rising edge of PWMH PHL: PWMH Falling Edge Trigger Enable bit 1 = Falling edge of PWMH will trigger LEB counter 0 = LEB ignores falling edge of PWMH PLR: PWML Rising Edge Trigger Enable bit 1 = Rising edge of PWML will trigger LEB counter 0 = LEB ignores rising edge of PWML PLF: PWML Falling Edge Trigger Enable bit 1 = Falling edge of PWML will trigger LEB counter 0 = LEB ignores falling edge of PWML FLTLEBEN: Fault Input Leading Edge Blanking Enable bit 1 = Leading Edge Blanking is applied to selected Fault Input 0 = Leading Edge Blanking is not applied to selected Fault Input CLLEBEN: Current-Limit Leading Edge Blanking Enable bit 1 = Leading Edge Blanking is applied to selected Current-Limit Input 0 = Leading Edge Blanking is not applied to selected Current-Limit Input LEB: Leading Edge Blanking for Current-Limit and Fault Inputs bits Value is 8 nsec increments Unimplemented: Read as `0'
bit 14
bit 13
bit 12
bit 11
bit 10
bit 9-3 bit 2-0
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12.4 Module Functionality
12.4.2 COMPLEMENTARY PWM MODE
The PS PWM module is a very high-speed design that provides capabilities not found in other PWM generators. The module supports these PWM modes: * * * * * * * * * Standard Edge-Aligned PWM mode Complementary PWM mode Push-Pull PWM mode Multi-Phase PWM mode Variable Phase PWM mode Current-Limit PWM mode Constant Off-time PWM mode Current Reset PWM mode Independent Time Base PWM mode Complementary PWM is generated in a manner similar to standard Edge-Aligned PWM. Complementary mode provides a second PWM output signal on the PWML pin that is the complement of the primary PWM signal (PWMH). Complementary mode PWM is shown in Figure 12-4.
FIGURE 12-4:
COMPLEMENTARY PWM
Timer Resets
Duty Cycle Match Period Value Timer Value
12.4.1
STANDARD EDGE-ALIGNED PWM MODE
0 PWMH
Standard Edge-Aligned mode (Figure 12-3) is the basic PWM mode used by many power converter topologies such as "Buck", "Boost" and "Forward". To create the edge-aligned PWM, a timer/counter circuit counts upward from zero to a specified maximum value for the Period. Another register contains the value for Duty Cycle, which is constantly compared to the timer (Period) value. While the timer/counter value is less than or equal to the duty cycle value, the PWM output signal is asserted. When the timer value exceeds the duty cycle value, the PWM signal is deasserted. When the timer is greater than the period value, the timer is reset, and the process repeats.
Duty Cycle Period
PWML
(Period)-(Duty Cycle)
12.4.3
PUSH-PULL PWM MODE
FIGURE 12-3:
EDGE-ALIGNED PWM
Timer Resets
Duty Cycle Match Period Value Timer Value
The Push-Pull mode shown in Figure 12-5 is a version of the standard Edge-Aligned PWM mode where the active PWM signal is alternately outputted on one of two PWM pins. There is no complementary PWM output available. This mode is useful in transformer-based power converters. Transformer-based circuits must avoid any direct currents that will cause their cores to saturate. The Push-Pull mode ensures that the duty cycle of the two phases is identical, thus yielding a net DC bias of zero.
FIGURE 12-5:
0 PWMH Duty Cycle Period Period Value Timer Value
PUSH-PULL PWM
Timer Resets
Duty Cycle Match
0 PWMH Duty Cycle Period PWML Duty Cycle
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12.4.4 MULTI-PHASE PWM MODE 12.4.6 CURRENT-LIMIT PWM MODE
Multi-Phase PWM, as shown in Figure 12-6, uses phase-shift values in the Phase registers to shift the PWM outputs relative to the primary time base. Because the phase-shift values are added to the primary time base, the phase-shifted outputs occur earlier than a PWM channel that specifies zero phase shift. In Multi-Phase mode, the specified phase shift is fixed by the application's design. Figure 12-8 shows Cycle-by-Cycle Current-Limit mode. This mode truncates the asserted PWM signal when the selected external Fault signal is asserted. The PWM output values are specified by the Fault override bits (FLTDAT<1:0>) in the IOCONx register. The override output remains in effect until the beginning of the next PWM cycle. This mode is sometimes used in Power Factor Correction (PFC) circuits where the inductor current controls the PWM on time. This is a constant frequency PWM mode.
FIGURE 12-6:
MULTI-PHASE PWM
PTMR=0
FIGURE 12-8:
PWM1H Phase2 PWM2H
Duty Cycle
CYCLE-BY-CYCLE CURRENT-LIMIT PWM MODE
FLTx Negates PWM Duty Cycle Phase3 Period Value Duty Cycle Timer Value 0 Duty Cycle PWMH Period PWMH Actual Duty Cycle Programmed Duty Cycle
FLTx Negates PWM
PWM3H
Duty Cycle Phase4
PWM4H
Programmed Duty Cycle Actual Duty Cycle
12.4.5
VARIABLE PHASE PWM MODE
Figure 12-7 shows the waveforms for Variable PhaseShift PWM. Power-converter circuits constantly change the phase shift among PWM channels as a means to control the flow of power, in contrast to most PWM circuits that vary the duty cycle of PWM signals to control power flow. Often, in variable phase applications, the PWM duty cycle is maintained at 50%. The phase-shift value should be updated when the PWM signal is not asserted. Complementary outputs are available in Variable Phase-Shift mode.
12.4.7
CONSTANT OFF-TIME PWM
FIGURE 12-7:
VARIABLE PHASE PWM
Constant Off-Time mode is shown in Figure 12-9. Constant Off-Time PWM is a variable-frequency mode where the actual PWM period is less than or equal to the specified period value. The PWM time base is externally reset some time after the PWM signal duty cycle value has been reached, and the PWM signal has been deasserted. This mode is implemented by enabling the On-Time PWM mode (Current Reset mode) and using the complementary output.
PWM1H
Duty Cycle
Duty Cycle Phase2 (new value)
Phase2 (old value) PWM2H
Duty Cycle
Duty Cycle Period
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FIGURE 12-9: CONSTANT OFF-TIME PWM
Programmed Period External Timer Reset Period Value Timer Value External Timer Reset
Typically, in the converter application, an energy storage inductor is charged with current while the PWM signal is asserted, and the inductor current is discharged by the load when the PWM signal is deasserted. In this application of current reset PWM, an external current measurement circuit determines when the inductor is discharged, and then generates a signal that the PWM module uses to reset the time base counter. In Current Reset mode, complementary outputs are available.
12.4.9
0 PWML Duty Cycle Actual Period Note: Duty Cycle represents off time Duty Cycle
INDEPENDENT TIME BASE PWM
Independent Time Base PWM, as shown in Figure 12-11, is often used when the dsPIC DSC is controlling different power converter subcircuits such as the Power Factor Correction circuit, which may use 100 kHz PWM, and the full-bridge forward converter section may use 250 kHz PWM.
FIGURE 12-11: 12.4.8 CURRENT RESET PWM MODE
PWM1H
INDEPENDENT TIME BASE PWM
Current Reset PWM is shown in Figure 12-10. Current Reset PWM uses a Variable-Frequency mode where the actual PWM period is less than or equal to the specified period value. The PWM time base is externally reset some time after the PWM signal duty cycle value has been reached and the PWM signal has been deasserted. Current Reset PWM is a constant on-time PWM mode.
Duty Cycle
Period 1 PWM2H Duty Cycle Period 2
FIGURE 12-10:
CURRENT RESET PWM
Programmed Period External Timer Reset
PWM3H
Duty Cycle Period 3
External Timer Reset Period Value Timer Value
PWM4H
Duty Cycle Period 4
Note:
With independent time bases, PWM signals are no longer phase related to each other.
0 PWMH Duty Cycle Actual Period Programmed Period Duty Cycle
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12.5 Primary PWM Time Base 12.6
There is a Primary Time Base (PTMR) counter for the entire PWM module, In addition, each PWM generator has an individual time base counter. The PTMR determines when the individual time base counters are to update their duty cycle and phase-shift registers. The master time base is also responsible for generating the Special Event Triggers and timer-based interrupts. Figure 12-12 shows a block diagram of the primary time base logic.
Primary PWM Time Base Roll Counter
FIGURE 12-12:
PTMR BLOCK DIAGRAM
The primary time base has an additional 6-bit counter that counts the period matches of the primary time base. This ROLL counter enables the PWM generators to stagger their trigger events in time to the ADC module. This counter is not accessible for reading. Each PWM generator has six bits (TRGSTRT<5:0>) in the TRGCONx registers. These bits are used to specify the start enable for each TRIGx postscaler controlled by the TRGDIV<2:0> bits in the TRGCONx registers. The TDIV bits specify how frequently a trigger pulse is generated, and the ROLL bits specify when the sequence begins. Once the TRIG postscaler is enabled, the ROLL bits and the TRGSTRT bits have no further effect until the PWM module is disabled and then reenabled.
PERIOD
12
Equality Comparator
>
PR_MATCH Reset
12
The purpose of the ROLL counter and the TRGSTRT bits is to allow the user to spread the system work load over a series of PWM cycles. An additional use of the ROLL counter is to allow the internal FRC oscillator to be varied on a PWM cycle basis to reduce peak EMI emissions generated by switching transistors in the power conversion application. The ROLL counter is cleared when the PWM module is disabled (PTEN = 0), and the TRIGx postscalers are disabled, requiring a new ROLL versus TRGSTRT match to begin counting again.
PTMR
Clk
The primary time base may be reset by an external signal specified via the SYNCSRC<2:0> bits in the PTCON register. The external reset feature is enabled via the SYNCEN bit in the PTCON register. The primary time base reset feature supports synchronization of the primary time base with another SMPS dsPIC DSC device or other circuitry in the user's application. The primary time base logic also provides an output signal when a period match occurs that can be used to synchronize an external device such as another SMPS dsPIC DSC.
12.7
Individual PWM Time Base(s)
12.5.1
PTMR SYNCHRONIZATION
Because absolute synchronization is not possible, the user should program the time base period of the secondary (slave) device to be slightly larger than the primary device time base to ensure that the two time bases will reset at the same time.
Each PWM generator also has its own PWM time base. Figure 12-13 shows a block diagram for the individual time base circuits. With a time base per PWM generator, the PWM module can generate PWM outputs that are phase shifted relative to each other, or totally independent of each other. The individual PWM timers (TMRx) provide the time base values that are compared to the duty cycle registers to create the PWM signals. The user may initialize these individual time base counters before or during operation via the phase-shift registers. The primary (PTMR) and the individual timers (TMRx) are not user readable.
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FIGURE 12-13:
15
PTPER
TMRX BLOCK DIAGRAM
4 15
PHASEx
12.9
4
PWM Frequency and Duty Cycle Resolution
0
MUX
1
ITBx
The PWM Duty cycle resolution is 1.05 nsec per LSB @ 30 MIPS. The PWM period resolution is 8.4 nsec @ 30 MIPS. Table 12-1 shows the duty cycle resolution versus PWM frequencies for 30 MIPS execution speed.
12
Comparator
TABLE 12-1:
AVAILABLE PWM FREQUENCIES AND RESOLUTIONS @ 30 MIPS
PWM Frequency 14.6 KHz 29.3 KHz 58.6 KHz 117.2 KHz 234.4 KHz 468.9 KHz 937.9 KHz 1.87 MHz 3.75 MHz
> MIPS 4
Reset
12 15
TMRx
PWM Duty Cycle Resolution 16 bits 15 bits 14 bits 13 bits 12 bits 11 bits 10 bits 9 bits 8 bits
Clk
Normally, the Primary Time Base (PTMR) provides synchronization control to the individual timer/counters so they count in lock-step unison. If the PWM phase-shift feature is used, then the PTMR provides the synchronization signal to each individual timer/counter that causes them to reinitialize with their individual phase-shift values. If a PWM generator is operating in Independent Time Base mode, the individual timer/counters count upward until their count values match the value stored in their phase registers, then they reset and the cycle repeats. The primary time base and the individual time bases are implemented as 13-bit counters. The timers/ counters are clocked at 120 MHz @ 30 MIPS, which provides a frequency resolution of 8.4 nsec. All of the timer/counters are enabled/disabled by setting/clearing the PTEN bit in the PTCON SFR. The timers are cleared when the PTEN bit is cleared in software. The PTPER register sets the counting period for PTMR. The user must write a 13-bit value to PTPER<15:3>. When the value in PTMR<15:3> matches the value in PTPER<15:3>, the primary time base is reset to `0', and the individual time base counters are reinitialized to their phase values (except if in Independent Time Base mode).
30 30 30 30 30 30 30 30 30
TABLE 12-2:
AVAILABLE PWM FREQUENCIES AND RESOLUTIONS @ 20 MIPS
PWM Frequency 39 156 624 2.5 KHz KHz KHz MHz
MIPS 20 20 20 20
PWM Duty Cycle Resolution 14 bits 12 bits 10 bits 8 bits
Notice the reduction in available resolution for a given PWM frequency is due to the reduced clock rate and the fact that the LSB of duty cycle resolution is derived from a fixed-delay element. At operating frequencies below 30 MIPS, the contribution of the fixed-delay element to the output resolution becomes less than 1 LSB. For frequency resonant mode power conversion applications, it is desirable to know the available PWM frequency resolution. The available frequency resolution varies with the PWM frequency. The PWM time base clocks at 120 MHz @ 30 MIPS. The following equation provides the frequency resolution versus PWM period: Frequency Resolution = 120 MHz / (Period) where Period = PTPER<15:3>
12.8
PWM Period
PTPER holds the 13-bit value that specifies the counting period for the primary PWM time base. The timer period can be updated at any time by the user. The PWM period can be determined from the following formula: Period Duration = (PTPER + 1) / 120 MHz @ 30 MIPS
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12.10 PWM Duty Cycle Comparison Units
The PWM module has two to four PWM duty cycle generators. Three to five 16-bit special function registers are used to specify duty cycle values for the PWM module: * MDC (Master Duty Cycle) * PDC1, ..., PDC4 (Duty Cycle) Each PWM generator has its own duty cycle register (DCx), and there is a Master Duty Cycle (MDC) register. The MDC register can be used instead of individual duty cycle registers. The MDC register enables multiple PWM generators to share a common duty cycle register to reduce the CPU overhead required in updating multiple duty cycle registers. Multi-phase power converters are an application where the use of the MDC feature saves valuable processor time. The value in each duty cycle register determines the amount of time that the PWM output is in the active state. The PWM time base counters are 13 bits wide and increment twice per instruction cycle. The PWM output is asserted when the timer/counter is less than or equal to the Most Significant 13 bits of the duty cycle register value. Each of the duty cycle registers allows a 16-bit duty cycle to be specified. The Least Significant 3 bits of the duty cycle registers are sent to additional logic for further adjustment of the PWM signal edge. Figure 12-14 is a block diagram of a duty cycle comparison unit.
12.11 Complementary PWM Outputs
Complementary PWM Output mode provides true and inverted PWM outputs on the pair of PWM output pins. The complement PWM signal is generated by inverting the active PWM signal. Complementary outputs are normally available with all of the different PWM modes except Push-Pull PWM and Independent PWM Output modes.
12.12 Independent PWM Outputs
Independent PWM Output mode simply replicates the active PWM output signal on both output pins associated with a PWM generator.
12.13 Duty Cycle Limits
The duty cycle generators are limited to the range of allowable values. A value of 0x0008 is the minimum duty cycle value that will produce an output pulse. This value represents 8.4 nsec at 30 MIPs. This minimum range limitation is not a problem in a real world application because of the slew-rate limitation of the PWM output buffers, external FET drivers, and the power transistors. The application control loop requires larger duty cycle values to achieve minimum transistor on times. The maximum duty cycle value is also limited to 0xFFEF. The user is responsible for limiting the duty cycle values to the allowable range of 0x0008 to 0xFFEF. Note: A duty cycle of 0x0000 will produce a zero PWM output, and a 0xFFFF duty cycle value will produce a high on the PWM output.
FIGURE 12-14:
15 TMRx
DUTY CYCLE COMPARISON
4 Clk
Compare Logic
<=
PWMx signal
0
MUX
1
MDCx select
15 PDCx Register 15
4
4 MDC Register
The duty cycle values can be updated at any time. The updated duty cycle values optionally can be held until the next rollover of the primary time base before becoming active.
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12.14 Dead-Time Generation
Dead time refers to a programmable period of time, specified by the Dead-Time Register (DTR) or the ALTDTR register, which prevent a PWM output from being asserted until its complementary PWM signal has been deasserted for the specified time. Figure 12-15 shows the insertion of dead time in a complementary pair of PWM outputs. Figure 12-16 shows the four dead-time units that each have their own dead-time value. Dead-time generation can be provided when any of the PWM I/O pin pairs are operating in any output mode. Many power-converter circuits require dead time because the power transistors cannot switch instantaneously. To prevent current "shoot-through" some amount of time must be provided between the turn-off event of one PWM output in a complementary pair and the turn-on event of the other transistor. The PWM module can also provide negative dead time. Negative dead time is the forced overlap of the PWMH and PWML signals. There are certain converter techniques that require a limited amount of current "shoot-through". The dead-time feature can be disabled for each PWM generator. The dead-time functionality is controlled by the DTCx<1:0> bits in the PWMCON register.
FIGURE 12-16:
DEAD-TIME CONTROL UNITS BLOCK DIAGRAM
PWM1H PWM1L
DTR1 ALTDR1 PWM1 in
Dead-time Unit #1
DTR2 ALTDTR2 PWM2 in
Dead-time Unit #2
PWM2H PWM2L
DTR3 ALTDTR3 PWM3 in
Dead-time Unit #3
PWM3H PWM3L
DTR4 ALTDTR4 PWM4 in
Dead-time Unit #4
PWM4H PWM4L
12.14.1
DEAD-TIME GENERATORS
FIGURE 12-15:
DEAD-TIME INSERTION FOR COMPLEMENTARY PWM
tda tda
Each complementary output pair for the PWM module has 12-bit down counters to produce the dead-time insertion. Each dead-time unit has a rising and falling edge detector connected to the duty cycle comparison output. Depending on whether the edge is rising or falling, one of the transitions on the complementary outputs is delayed until the associated timer counts down to zero. A timing diagram indicating the dead-time insertion for one pair of PWM outputs is shown in Figure 12-15.
PWM Generator #1 Output PWM1H PWM1L
12.14.2
ALTERNATE DEAD-TIME SOURCE
The alternate dead time refers to the dead time specified by the ALTDTR register that is applied to the complementary PWM output. Figure 12-17 shows a dual dead-time insertion using the ALTDTR register.
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FIGURE 12-17:
No dead time PWMH PWML Positive dead time PWMH PWML Negative dead time PWMH PWML
DUAL DEAD-TIME WAVEFORMS
12.14.3
DEAD-TIME RANGES
The amount of dead time provided by each dead-time unit is selected by specifying a 12-bit unsigned value in the DTRx registers. The 12-bit dead-time counters clock at four times the instruction execution rate. The Least Significant one bit of the dead-time value are processed by the Fine Adjust PWM module. Table 12-3 shows example dead-time ranges as a function of the device operating frequency.
TABLE 12-3:
MIPS 30 20
EXAMPLE DEAD-TIME RANGES
Resolution 4.16 ns 6.25 ns Dead-Time Range 0-16.3 usec 0-24.5 usec
12.14.4
DTRx ALTDTRx
DEAD-TIME INSERTION TIMING
Figure 12-18 shows how the dead-time insertion for complementary signals is accomplished.
12.14.5
DEAD-TIME DISTORTION
For small PWM duty cycles, the ratio of dead time to the active PWM time may become large. In this case, the inserted dead time introduces distortion into waveforms produced by the PWM module. The user can ensure that dead-time distortion is minimized by keeping the PWM duty cycle at least three times larger than the dead time. A similar effect occurs for duty cycles at or near 100%. The maximum duty cycle used in the application should be chosen such that the minimum inactive time of the signal is at least three times larger than the dead time.
FIGURE 12-18:
DEAD-TIME INSERTION (PWM OUTPUT SIGNAL TIMING MAY BE DELAYED)
CLOCK
9
0
1
2
3
4
5
6
7
8
PTMR
1
DEAD-TIME VALUE <10:4> DUTY CYCLE REG <15:4> RAW PWMH RAW PWML
4
PWMH OUTPUT PWML OUTPUT
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12.15 Speed Limits of PWM Output Circuitry
The PWM output I/O buffers, and any attached circuits such as FET drivers and power FETs, have limited slew-rate capability. For very small PWM duty cycles, the PWM output signal is low-pass filtered; no pulse makes it through all of the circuitry. A similar effect happens for duty cycle values near 100%. Before 100% duty cycle is reached, the output PWM signal appears to saturate at 100%. Users need to take such behavior into account in their applications. In normal power conversion applications, duty cycle values near 0% or 100% are avoided because to reach these values is to operate in a Discontinuous mode or a Saturated mode where the control loop may be non functional.
12.16.2
SPECIAL EVENT TRIGGER POSTSCALER
The PWM Special Event Trigger has a postscaler that allows a 1:1 to 1:16 postscale ratio. The postscaler is configured by writing the SEVOPS3:SEVOPS0 control bits in the PTCON register. The special event output postscaler is cleared on the following events: * Any write to the SEVTCMP register. * Any device reset.
12.17 Individual PWM Triggers
The PWM module also features an additional ADC trigger output for each PWM generator. This feature is very useful when the PWM generators are operating in Independent Time Base mode. A block diagram of a trigger circuit is shown in Figure 12-19. The user specifies a match value in the TRIGx register. When the local time base counter value matches the TRIGx value, an ADC trigger signal is generated. Trigger signals are always generated regardless of the TRIGx value as long as the TRIGx value is less than or equal to the PWM period value for the local time base. If the TRGIEN bit is set in the PWMCONx register, then an interrupt request is generated. The individual trigger outputs can be divided per the TRGDIV<2:0> bits in the TRGCONx registers, which allows the trigger signals to the ADC to be generated once for every 1, 2, 3 ..., 7 trigger events. The trigger divider allows the user to tailor the ADC sample rates to the requirements of the control loop.
12.16 PWM Special Event Trigger
The PWM module has a Special Event Trigger that allows A/D conversions to be synchronized to the PWM time base. The A/D sampling and conversion time can be programmed to occur at any point within the PWM period. The Special Event Trigger allows the user to minimize the delay between the time when A/D conversion results are acquired and the time when the duty cycle value is updated. The Special Event Trigger is based on the primary PWM time base. The PWM Special Event Trigger has one register (SEVTCMP) and four additional control bits (SEVOPS<3:0> in PTCON) to control its operation. The PTMR value that causes a Special Event Trigger is loaded into the SEVTCMP register.
12.16.1
SPECIAL EVENT TRIGGER ENABLE
The PWM module always produces Special Event Trigger pulses. This signal can optionally be used by the A/D module.
12.18 Time Base Capture with External Trigger
An external current-limit trigger signal will capture the PWM time base value and store it in the TRGCONx register. This feature can be used to monitor the time when an inductor current has reached a specified value.
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FIGURE 12-19: PWM TRIGGER BLOCK DIAGRAM
PDI 15 Clk PTMRx Pulse Compare Logic 15 TRIGx Register TRGDIV<2:0> PDI = 4 Divider PWMx Trigger 4
TRIGx Write
12.19 PWM Interrupts
The PWM module can generate interrupts based on internal timing or based on external signals via the current-limit and Fault inputs. The primary time base module can generate an interrupt request when a special event occurs. Each PWM generator module has its own interrupt request signal to the interrupt controller. The interrupt for each PWM generator is an OR of the trigger event interrupt request, the current-limit input event, or the Fault input event for that module. There are four interrupt request signals to the interrupt control plus another interrupt request from the primary time base on special events.
12.21 PWM Fault and Current-Limit Pins
The PWM module supports multiple Fault pins for each PWM generator. These pins are labeled SFLTx (Shared Fault) or IFLTx (Individual Fault). The Shared Fault pins can be seen and used by any of the PWM generators. The Individual Fault pins are usable by specific PWM generators. Each PWM generator can have one pin for use as a cycle-by-cycle current limit, and another pin for use as either a cycle-by-cycle current limit or a latching current Fault disable function.
12.22 Leading Edge Blanking
Each PWM generator supports "Leading Edge Blanking" of the current-limit and Fault inputs via the LEB<9:3> bits and the PHR, PHF, PLR, PLF, FLTLEBEN and CLLEBEN bits in the LEBCONx registers. The purpose of leading edge blanking is to mask the transients that occur on the application printed circuit board when the power transistors are turned on and off. The LEB bits support the blanking (ignoring) of the current-limit and Fault inputs for a period of 0 to 1024 nsec in 8.4 nsec increments following any specified rising or falling edge of the coarse PWMH and PWML signals. The coarse PWM signal (signal prior to the PWM fine tuning) has resolution of 8.4 nsec (at 30 MIPS), which is the same time resolution as the LEB counters. The PHR, PHF, PLR and PLF bits select which edge of the PWMH and PLWL signals will start the blanking timer. If a new selected edge triggers the LEB timer while the timer is still active from a previously selected PWM edge, the timer reinitializes and continues counting.
12.20 PWM Time Base Interrupts
The PWM module can generate interrupts based on the primary time base and/or the individual time bases in each PWM generator. The interrupt timing is specified by the Special Event Comparison Register (SEVTCMP) for the primary time base, and by the TRIGx registers for the individual time bases in the PWM generator modules. The primary time base special event interrupt is enabled via the SEIEN bit in the PTCON register. The individual time base interrupts generated by the trigger logic in each PWM generator are controlled by the TRGIEN bit in the PWMCONx registers.
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The FLTLEBEN and CLLEBEN bits enable the application of the blanking period to the selected Fault and current-limit inputs. The LEB duration @ (LEB<9:3> + 1) / 120 MHz . 30 MIPS = pin. The FLTDAT<1:0> bits in the IOCONx registers supply the data values to be assigned to the PWMxH,L pins in the advent of a Fault. The Fault pin logic can operate separately from the PWM logic as an external interrupt pin. If the faults are disabled from affecting the PWM generators in the FCLCONx register, then the Fault pin can be used as a general purpose interrupt pin.
There is a blanking period offset of 8.4 nsec. Therefore a LEB<9:3> value of zero yields an effective blanking period of 8.4 ns. If a current-limit or Fault inputs are active at the end of the previous PWM cycle, and they are still active at the start of the new PWM cycle and the dead time is nonzero, the Fault or current limit will be detected regardless of the LEB counter configuration.
12.23.2
FAULT STATES
12.23 PWM Fault Pins
Each PWM generator can select its own Fault input source from a selection of up to 12 Fault/current-limit pins. In the FCLCONx registers, each PWM generator has control bits that specify the source for its Fault input signal. These are the FLTSRC<3:0> bits. Additionally, each PWM generator has a FLTIEN bit in the PWMCONx register that enables the generation of Fault interrupt requests. Each PWM generator has an associated Fault Polarity bit (FLTPOL) in the FCLCONx register that selects the active level of the selected Fault input. The Fault pins actually serve two different purposes. First is generation of Fault overrides for the PWM outputs. The action of overriding the PWM outputs and generating an interrupt is performed asynchronously in hardware so that Fault events can be managed quickly. Second, the Fault pin inputs can be used to implement either Current-Limit PWM mode or Current Force mode. PWM Fault condition states are available on the FLTSTAT bit in the PWMCONx registers. The FLTSTAT bits displays the Fault IRQ latch if the FIE bit is set. If Fault interrupts are not enabled, then the FSTATx bits display the status of the selected FLTx input in positive logic format. When the Fault input pins are not used in association with a PWM generator, these pins become general purpose I/O or interrupt input pins. The FLTx pins are normally active high. The FLTPOL bit in FCLCONx registers, if set to one, invert the selected Fault input signal so that it is an active low. The Fault pins are also readable through the PORT I/O logic when the PWM module is enabled. This allows the user to poll the state of the Fault pins in software.
The IOCONx register has two bits that determine the state of each PWMx I/O pin when they are overridden by a Fault input. When these bits are cleared, the PWM I/O pin is driven to the inactive state. If the bit is set, the PWM I/O pin is driven to the active state. The active and inactive states are referenced to the polarity defined for each PWM I/O pin (HPOL and LPOL polarity control bits).
12.23.3
FAULT INPUT MODES
The Fault input pin has two modes of operation: * Latched Mode: When the Fault pin is asserted, the PWM outputs go to the states defined in the FLTDAT bits in the IOCONx registers. The PWM outputs remain in this state until the Fault pin is deasserted AND the corresponding interrupt flag has been cleared in software. When both of these actions have occurred, the PWM outputs return to normal operation at the beginning of the next PWM cycle boundary. If the FLTSTAT bit is cleared before the Fault condition ends, the PWM module waits until the Fault pin is no longer asserted to restore the outputs. Software can clear the FLTSTAT bit by writing a zero to the FLTIEN bit. * Cycle-by-Cycle Mode: When the Fault input pin is asserted, the PWM outputs remain in the deasserted PWM state for as long as the Fault pin is asserted. For Complementary Output modes, PWMH is low (deasserted) and PWML is high (asserted). After the Fault pin is driven high, the PWM outputs return to normal operation at the beginning of the following PWM cycle. The operating mode for each Fault input pin is selected using the FLTMOD<1:0> control bits in the FCLCONx register.
12.23.4
FAULT ENTRY
12.23.1
FAULT INTERRUPTS
The FLTIENx bits in the PWMCONx registers determine if an interrupt will be generated when the FLTx input is asserted high. The FLTMOD bits in the FCLCONx register determines how the PWM generator and its outputs respond to the selected Fault input
The response of the PWM pins to the Fault input pins is always asynchronous with respect to the device clock signals. That is, the PWM outputs should immediately go to the states defined in the FLTDAT register bits without any interaction from the dsPIC DSC device or software.
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Refer to Section 12.28 "Fault and Current-Limit Override Issues with Dead-time Logic" for information regarding data sensitivity and behavior in response to current-limit or Fault events. 2. input signal is asserted. When the CLMOD bit is zero AND the XPRES bit in the PWMCONx register is `01' AND the PWM generator is in Independent Time Base mode (ITB = 1), then a current-limit signal resets the time base for the affected PWM generator. This behavior is called Current Reset mode, which is used in some Power Factor Correction (PFC) applications.
12.23.5
FAULT EXIT
The restoration of the PWM signals after a Fault condition has ended must occur at a PWM cycle boundary to ensure proper synchronization of PWM signal edges and manual signal overrides. The next PWM cycle begins when the PTMRx value is zero.
12.24.1
CURRENT-LIMIT INTERRUPTS
12.23.6
FAULT EXIT WITH PTMR DISABLED
There is a special case for exiting a Fault condition when the PWM time base is disabled (PTEN = 0). When a Fault input is programmed for Cycle-by-Cycle mode, the PWM outputs are immediately restored to normal operation when the Fault input pin is deasserted. The PWM outputs should return to their default programmed values. (The time base is disabled, so there is no reason to wait for the beginning of the next PWM cycle.) When a Fault input is programmed for Latched mode, the PWM outputs are restored immediately when the Fault input pin is deasserted AND the FSTAT bit has been cleared in software.
The state of the PWM current-limit conditions is available on the CLSTAT bits in the PWMCONx registers. The CLSTAT bits display the current-limit IRQ flag if the CLIEN bit is set. If current-limit interrupts are not enabled, then the CLSTAT bits display the status of the selected current-limit inputs in positive logic format. When the current-limit input pin associated with a PWM generator is not used, these pins become general purpose I/O or interrupt input pins. The current-limit pins are normally active high. If set to `1', the CLPOL bit in FCLCONx registers inverts the selected current-limit input signal to active high. The interrupts generated by the selected current-limit signals are combined to create a single interrupt request signal to the interrupt controller, which has its own interrupt vector, interrupt flag bit, interrupt enable bit and interrupt priority bits associated with it. The Fault pins are also readable through the PORT I/O logic when the PWM module is enabled. This allows the user to poll the state of the Fault pins in software.
12.23.7
FAULT PIN SOFTWARE CONTROL
The Fault pin can be controlled manually in software. Since the Fault input is shared with a PORT I/O pin, the PORT pin can be configured as an output by clearing the corresponding TRIS bit. When the PORT bit for the pin is cleared, the Fault input will be activated. Note: The user should use caution when controlling the Fault inputs in software. If the TRIS bit for the Fault pin is cleared and the PORT bit is set high, then the Fault input cannot be driven externally.
12.25 Simultaneous PWM Faults and Current Limits
The current-limit override function, if enabled and active, forces the PWMxH,L pins to the values specified by the CLDAT<1:0> bits in the IOCONx registers UNLESS the Fault function is enabled and active. If the selected Fault input is active, the PWMxH,L outputs assume the values specified by the FLTDAT<1:0> bits in the IOCONx registers.
12.24 PWM Current-Limit Pins
Each PWM generator can select its own current-limit input source from up to12 current-limit/Fault pins. In the FCLCONx registers, each PWM generator has control bits (CLSRC<3:0>) that specify the source for its current-limit input signal. Additionally, each PWM generator has a CLIEN bit in the PWMCONx register that enables the generation of current-limit interrupt requests. Each PWM generator has an associated Fault polarity bit CLPOL in the FCLCONx register. The current-limit pins actually serve two different purposes. They can be used to implement either CurrentLimit PWM mode or Current Reset PWM mode. 1. When the CLIEN bit is set in the PWMCONx registers, the PWMxH,L outputs are forced to the values specified by the CLDAT<1:0> bits in the IOCONx register, if the selected current-limit
12.26 PWM Fault and Current-Limit TRG Outputs To ADC
The Fault and current-limit source selection fields in the FCLCONx registers (FLTSRC<3:0> and CLSRC<3:0>) control multiplexers in each PWM generator module. The control multiplexers select the desired Fault and current-limit signals for their respective modules. The selected Fault and current-limit signals are also available to the ADC module as trigger signals that initiate ADC sampling and conversion operations.
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12.27 PWM Output Override Priority
If the PWM module is enabled, the priority of PWMx pin ownership is: 1. 2. 3. 4. 5. PWM Generator (lowest priority) Output Override Current-Limit Override Fault Override PENx (GPIO/PWM) ownership (highest priority) cation reduces the loop stability. Setting the IUE bit minimizes the delay between writing the duty cycle registers and the response of the PWM generators to that change.
12.31 PWM Output Override
All control bits associated with the PWM output override function are contained in the IOCONx register. If the PENH, PENL bits are reset (default state), then the PWM module controls the PWMx output pins. The PWM output override bits allow the user to manually drive the PWM I/O pins to specified logic states independent of the duty cycle comparison units. The OVRDAT<1:0> bits in the IOCONx register determine the state of the PWM I/O pins when a particular output is overridden via the OVRENH,L bits. The OVRENH, OVRENL bits are active high control bits. When the OVREN bits are set, the corresponding OVRDAT bit overrides the PWM output from the PWM generator.
If the PWM module is disabled, the GPIO module controls the PWMx pins.
12.28 Fault and Current-Limit Override Issues with Dead-time Logic
The PWMxH and PWMxL outputs are immediately driven low (deasserted) as specified by the CLDAT<1:0> and the FLTDAT<1:0> bits when a current-limit or a Fault event occurs. The override data is gated with the PWM signals going into the dead-time logic block, and at the output of the PWM module, just ahead of the PWM pin output buffers. Many applications require fast response to current shutdown for accurate current control and/or to limit circuitry damage to Fault currents. Some applications will set the complementary PWM outputs high in synchronous rectifier designs when a Fault or current-limit event occurs. If the CLDAT or FLTDAT bits are set to `1', and their associated event occurs, then these asserted outputs will be delayed by clocked logic in the dead-time circuitry.
12.31.1
COMPLEMENTARY OUTPUT MODE
When the PWM is in Complementary Output mode, the dead-time generator is still active with overrides. The output overrides and Fault overrides generate control signals used by the dead-time unit to set the outputs as requested, including dead time. Dead-time insertion can be performed when PWM channels are overridden manually.
12.31.2
OVERRIDE SYNCHRONIZATION
12.29 Asserting Outputs via Current Limit
It is possible to use the CLDAT bits to assert the PWMxH,L outputs in response to a current-limit event. Such behavior could be used as a current "force" feature in response to an external current or voltage measurement that indicates a sudden sharp increase in the load on the power-converter output. Forcing the PWM "ON" could be viewed as a "Feed-Forward" term that allows quick system response to unexpected load increases without waiting for the digital control loop to respond.
If the OSYNC bit in the IOCONx register is set, the output overrides performed via the OVRENH,L and the OVDDAT<1:0> bits are synchronized to the PWM time base. Synchronous output overrides occur when the time base is zero. If PTEN = 0, meaning the timer is not running, writes to IOCON take effect on the next TCY boundary.
12.32 Functional Exceptions
12.32.1 POWER RESET CONDITIONS
All registers associated with the PWM module are reset to the states given in Table 12-4 upon a Power-on Reset. On a device reset, the PWM output pins are tri-stated.
12.30 PWM Immediate Update
For high-performance PWM control-loop applications, the user may want to force the duty cycle updates to occur immediately. Setting the IUE bit in the PWMCONx register enables this feature. In a closed-loop control application, any delay between the sensing of a system's state and the subsequent outputting of PWM control signals that drive the appli-
12.32.2
SLEEP MODE
The selected Fault input pin has the ability to wake the CPU from Sleep mode. The PWM module should generate an asynchronous interrupt if any of the selected Fault pins is driven low while in Sleep. It is recommended that the user disable the PWM outputs prior to entering Sleep mode. If the PWM module is controlling a power conversion application, the action
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of putting the device into Sleep will cause any control loops to be disabled, and most applications will likely experience issues unless they are explicitly designed to operate in an Open-Loop mode.
12.32.3
CPU IDLE MODE
The dsPIC30F1010/202X module has a PTSIDL control bit in the PTCON register. This bit determines if the PWM module continues to operate or stops when the device enters Idle mode. Stopped Idle mode functions like Sleep mode, and Fault pins are asynchronously active. * PTSIDL = 1 (Stop module when in Idle mode) * PTSIDL = 0 (Don't stop module when in Idle mode) It is recommended that the user disable the PWM outputs prior to entering Idle mode. If the PWM module is controlling a power-conversion application, the action of putting the device into Idle will cause any control loops to be disabled, and most applications will likely experience issues unless they are explicitly designed to operate in an Open-Loop mode.
12.33 Register Bit Alignment
Table 12-4 on page 143 shows the registers for the SMPS PWM module. All time-based data for the module is always bit-aligned with respect to time. For example: bit 3 in the period register, the duty cycle registers, the dead-time registers, the trigger registers and the phase registers always represents a value of 18.4 nsec, assuming 30 MIPS operation. Unused portions of registers always read as zeros. The use of data alignment makes it easier to write software because it eliminates the need to shift time values to fit into registers. It also eases the computation and understanding of time allotment within a PWM cycle.
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12.34 APPLICATION EXAMPLES:
12.34.1 STANDARD PWM MODE In standard PWM mode, the PWM output is typically connected to a single transistor, which charges an inductor, as shown in Figure 12-20. Buck and Boost converters typically use standard PWM mode. Complementary mode PWM is often used in circuits that use two transistors in a bridge configuration where transformers are not used, as shown in Figure 12-21. If transformers are used, then some means must be provided to ensure that no net DC currents flow through the transformer to prevent core saturation. 12.34.2 APPLICATION OF COMPLEMENTARY PWM MODE
FIGURE 12-20:
APPLICATIONS OF STANDARD PWM MODE
Period
FIGURE 12-21:
APPLICATIONS OF COMPLEMENTARY PWM MODE
Dead Time Dead Time
Dead Time PWM1H PWM1H TON TOFF PWM1L Inductor charges during TON TON versus Period controls power flow
Period +VIN Buck Converter +VIN L1 VOUT PWM1H CR LR
Series Resonant Half Bridge Converter
T1
VOUT
+
PWM1L PWM1H
+
Synchronous Buck Converter Boost Converter +VIN L1 VOUT +VIN L1 VOUT
+
PWM1H PWM1H PWM1L
+
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12.34.3 APPLICATION OF PUSH-PULL PWM MODE Push-Pull PWM mode is typically used in transformer coupled circuits to ensure that no net DC currents flow through the transformer. Push-Pull mode ensures that the same duty cycle PWM pulse is applied to the transformer windings in alternate directions, as shown in Figure 12-22. 12.34.4 APPLICATION OF MULTI-PHASE PWM MODE Multi-Phase PWM mode is often used in DC/DC converters that must handle very fast load current transients and fit into tight spaces. A multi-phase converter is essentially a parallel array of buck converters that are operated slightly out of phase of each other, as shown in Figure 12-23. The multiple phases create an effective switching speed equal to the sum of the individual converters. If a single phase is operating with a 333 KHz PWM frequency, then the effective switching frequency for the circuit is 1 MHz. This high switching frequency greatly reduces output capacitor size requirements and improves load transient response.
FIGURE 12-22:
APPLICATIONS OF PUSHPULL PWM MODE
TON PWM1H
TOFF TON
FIGURE 12-23:
TOFF
PWM1L
APPLICATIONS OF MULTIPHASE PWM MODE
Period Dead Time Dead Time
Period Dead Time
PWM1H PWM1L
+VIN + PWM1H
T1
PWM2H Half Bridge Converter PWM2L L1 VOUT PWM3H + PWM1L
+
PWM3L
+VIN
PWM1H PWM1H
T1
Multiphase DC/DC Converter PWM2H PWM3H VOUT
Push-Pull Buck Converter L1 VOUT L1
+VIN
+
PWM1L PWM1L
L2 L3 PWM1L
+
PWM1L
+VIN Full Bridge Converter PWH1H PWH1L T1 L1 VOUT
+
PWH1L
PWH1H
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12.34.5 APPLICATION OF VARIABLE PHASE PWM MODE Variable phase PWM is used in newer power conversion topologies that are designed to reduce switching losses. In standard PWM methods, any time a transistor switches between the conducting state and the nonconducting state (and vice versa), the transistor is exposed to the full current and voltage condition for the period of time it takes the transistor to turn on or off. The power loss (V * I * Tsw * FPWM) becomes appreciable at high frequencies. The Zero Voltage Switching (ZVS) and Zero Current Switching (ZVC) circuit topologies attempt to use quasi-resonant techniques to shift either the voltage or current waveforms relative to each other. This action either makes the voltage or the current zero at the time the transistor turns on or off. If either the current or the voltage is zero, then there is no switching loss generated. In variable phase PWM modes, the duty cycle is fixed at 50%, and the power flow is controlled by varying the phase relationship between the PWM channels, as shown in Figure 12-24. 12.34.6 APPLICATION OF CURRENT RESET PWM MODE In Current Reset PWM mode, the PWM frequency varies with the load current. This mode is different than most PWM modes because the user sets the maximum PWM period, but an external circuit measures the inductor current. When the inductor current falls below a specified value, the external current comparator circuit generates a signal that resets the PWM time base counter. The user specifies a PWM "on" time, and then some time after the PWM signal becomes inactive, the inductor current falls below a specified value and the PWM counter is reset earlier than the programmed PWM period. This mode is sometimes called Constant On-Time. This mode should not be confused with cycle-by-cycle current-limiting PWM, where the PWM is asserted, an external circuit generates a current Fault and the PWM signal is turned off before its programmed duty cycle would normally turn it off. In this mode, shown in Figure 12-25, the PWM frequency is fixed per the time base period.
FIGURE 12-24:
APPLICATION OF VARIABLE PHASE PWM MODE
FIGURE 12-25:
APPLICATION OF CURRENT RESET PWM MODE
Programmed Period
PWM1H PWM1L PWM2H PWM2L
PWM1H PWM1H
TOFF TON I
L
Variable Phase Shift
Actual Period External current comparator resets PWM counter
+VIN Full Bridge ZVT Converter PWM1H T1 VOUT
PWM cycle restarts early This is a variable frequency PWM mode
L
D
VOUT
+
PWM1H PWM1H
ACIN
+
CIN
IL
PWM1H
+ COUT
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12.35 METHODS TO REDUCE EMI
The goal is to move the PWM edges around in time to spread the EMI energy over a range of frequencies to reduce the peak energy at any given frequency during the EMI measurement process, which measures long term averages. The EMI measurement process integrates the EMI energy into 9 kHz wide frequency bins. Assuming that the carrier (PWM) frequency is 150 kHz, a 6% dither will yield a 9 kHz wide dither. 12.35.1 METHOD #1: PROGRAMMABLE FRC DITHER This method dithers all of the PWM outputs and the system clock. The advantage of this method is that no CPU resources are required. It is automatic once it is setup. The user can periodically update these values to simulate a more random frequency pattern. 12.35.2 METHOD #2: SOFTWARE CONTROLLED DITHER This method uses software to dither individual PWM channels by scaling the duty cycle and period. This method consumes CPU resources: Assume: 4 PWM channels updated @ 150 kHz rate: 600 kHz x (5 clocks (2 mul, 1 tblrdl, 1 mov)) = 3 MIPS additional work load 12.35.3 METHOD #3: SOFTWARE SCALING OF TIME BASE PERIOD This method used software to scale just the time base period. Assuming that the dither rate is relatively slow (about 250 Hz), the application control loop should be able to compensate for the changes in PWM period and adjust the duty cycle accordingly. 12.35.4 METHOD #4: FREQUENCY MODULATION This method varies the frequency at which the PWM cycle is varied (dithered). The frequency modulation process is similar (mathematically speaking) to Phase Modulation when analyzed over a small time window. The PWM module has the capability to phase modulate the PWM signals via the phase offset registers. Phase modulation has the advantage that the software is simpler and faster because multiple multiply operations (used for dithering frequency by scaling period and duty cycles) are replaced with fewer additions or simple updates of phase offset values into the phase registers. This method also has these advantages: 1. 2. Multi-phase and variable phase PWM modes could still be created. The PWM generators can still use the common time base, which simplifies determining when a "quiet time" is available for measuring current.
This method has one disadvantage: the phase modulation has to be at a relatively high update rate to achieve usable frequency spreading. 12.35.5 INDEPENDENT PWM CHANNEL DITHERING ISSUES: Issues for multi-phase or variable phase designs using independent output dithering must consider these issues: 1. 2. The phases are no longer phase aligned. Control of current sharing among phases is more difficult.
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12.36 EXTERNAL SYNCHRONIZATION FEATURES
In large power conversion systems, it is often desirable to be able to synchronize multiple power controllers to ensure that "beat frequencies" are not generated within the system, or as a means to ensure "quiet" periods during which current and voltage measurements can be made. dsPIC30F202X devices (excluding 28-pin packages) have input and/or output pins that provide the capability to either synchronize the SMPS dsPIC DSC device with an external device or have external devices synchronized to the SMPS dsPIC DSC. These synchronizing features are enabled via the SYNCIEN and SYNCOEN bits in the PTCON control register in the PWM module. The SYNCPOL bit in the PTCON register selects whether the rising edge or the falling edge of the SYNCI signal is the active edge. The SYNCPOL bit in the PTCON register also selects whether the SYNCO output pulse is low active or high active. The SYNCSRC<2:0> bits in the PTCON register specify the source for the SYNCI signal. If the SYNCI feature is enabled, the primary time base counter is reset when an active SYNCI edge is detected. If the SYNCO feature is enabled, an output pulse is generated when the primary time base counter rolls over at the end of a PWM cycle. The recommended SYNCI pulse width should be more than 100 nsec. The expected SYNCO output pulse width will be approximately 100 nsec. When using the SYNCI feature, it is recommended that the user program the period register with a period value that is slightly longer than the expected period of the external synchronization input signal. This provides protection in case the SYNCI signal is not received due to noise or external component failure. With a reasonable period value programmed into the PERIOD register, the local power conversion process should remain operational even if the global synchronization signal is not received.
12.38 CPU LOAD STAGGERING
The SMPS dsPIC DSC has the ability to stagger the individual trigger comparison operations. This feature helps to level the processor's workload to minimize situations where the processor is overloaded. Assume a situation where there are four PWM channels controlling four independent voltage outputs. Assume further that each PWM generator is operating at 1000 kHz (1 sec period) and each control loop is operating at 125 kHz (8 sec). The TDIV<2:0> bits in each PWMCONx register will be set to `111', which selects that every 8th trigger comparison match will generate a trigger signal to the ADC to capture data and begin a conversion process. If the stagger-in-time feature did not exist, all of the requests from all of the PWM trigger registers might occur at the same time. If this "pile-up" were to happen, some data sample might become stale (outdated) by the time the data for all four channels can be processed. With the stagger-in-time feature, the trigger signals are spaced out over time (during succeeding PWM periods) so that all of the data is processed in an orderly manner. The ROLL counter is a counter connected to the primary time base counter. The ROLL counter is incremented each time the primary time base counter reaches terminal count (period rollover). The stagger-in-time feature is controlled by the TRGSTRT<5:0> bits in the TRGCONx registers. The TRGSTRT<5:0> bits specify the count value of the ROLL counter that must be matched before an individual trigger comparison module in each of the PWM generators can begin to count the trigger comparison events as specified by the TRGDIV<2:0> bits in the PWMCONx registers. So, in our example with the four PWM generators, the first PWM's TRGSTRT<5:0> bits would be `000', the second PWM's TRGSTRT bits would be set to `010', the third PWM's TRGSTRT bits would be set to `100' and the fourth PWM's TRGSTRT bits would be set to `110'. Therefore, over a total of eight PWM cycles, the four separate control loops could be run each with their own 2-sec time period.
12.37 TIMING EXTERNAL PWM TRIGGER EVENTS
The TRGCONx control registers provide the capability to capture the time base value of an individual PWM generator at the moment a selected external trigger signal is detected. This timing information is useful in many applications where external circuitry is monitoring current or voltage. The software may want to determine if the external trigger event occurred either too early or too late.
12.39 EXTERNAL TRIGGER BLANKING
Using the LEB<9:3> bits in the LEBCONx registers, the PWM module has the capability to blank (ignore) the external current and Fault inputs for a period of 0 to 1024 nsec. This feature is useful if power transistor turn-on induced transients make current sensing difficult at the start of a PWM cycle.
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TABLE 12-4:
Bit 13 PTSIDL PTPER<15:3> -- MDC<15:0> SEVTCMP<15:3> -- MDCS -- FLTDAT<1:0> FLTSRC<3:0> CLDAT<1:0> FLTPOL -- -- -- OVRENL CLPOL PDC1<15:0> PHASE1<15:2> -- -- TRIG<15:3> --PLR TRGSTAT POLH -- PDC2<15:0> PHASE2<15:2> -- -- TRIG<15:3> --PLR TRGSTAT POLH -- CLSRC<3:0> POLL PMOD<1:0> FLTIEN CLIEN TRGIEN ITB OVRENH PLF FLTLEBEN CLLEBEN MDCS OVRENL CLPOL PDC3<15:0> PHASE3<15:2> -- -- TRIG<15:3> --PLR TRGSTAT POLH FLTIEN POLL PLF --FLTLEBEN CLIEN --CLLEBEN TRGIEN PMOD<1:0> ITB OVRENH MDCS OVRENL --------LEB<9:3> DTC<1:0> OVRDAT<1:0> TRGDIV<2:0> FLTDAT<1:0> DTR3<13:2> ALTDTR3<13:2> -- TRGSTRT<5:0> -- TRGMOD CLDAT<1:0> -- XPRES -- -- IUE OSYNC -- -- -- -- -- -- -- -- ------------LEB<9:3> DTC<1:0> OVRDAT<1:0> CLMOD -- -- FLTDAT<1:0> FLTSRC<3:0> -- ALTDTR2<13:2> -- TRGSTRT<5:0> -- -- CLDAT<1:0> FLTPOL -- XPRES -- -- IUE OSYNC FLTMOD<1:0> DTR2<13:2> -- -- -- -- -- -- -- -- CLSRC<3:0> CLPOL CLMOD POLL PMOD<1:0> OVRENH OVRENL OVRDAT<1:0> FLTIEN CLIEN TRGIEN ITB MDCS DTC<1:0> PLF FLTLEBEN CLLEBEN LEB<9:3> -- -- FLTDAT<1:0> FLTSRC<3:0> -- ------------ALTDTR1<13:2> -- TRGSTRT<5:0> -- -- CLDAT<1:0> FLTPOL -- XPRES -- -- IUE OSYNC FLTMOD<1:0> DTR1<13:2> -- -- -- -- -- -- -- -- CLMOD OVRDAT<1:0> DTC<1:0> TRGSTAT POLH -- CLSRC<3:0> POLL PMOD<1:0> OVRENH FLTIEN CLIEN TRGIEN ITB -- XPRES -- -- IUE OSYNC FLTMOD<1:0> -- SESTAT SEIEN EIPU SYNCPOL SYNCOEN SYNCEN SYNCSRC<2:0> SEVTPS<3:0> -- Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
SMPS PWM REGISTER MAP
All Resets 0000 FFF0 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
File Name --
ADR
Bit 15
Bit 14
PTCON
0400
PTEN
PTPER
0402
MDC
0404
SEVTCMP
0406
PWMCON1
0408
FLTSTAT
CLSTAT
IOCON1 --
040A
PENH
PENL
(c) 2006 Microchip Technology Inc.
PHF -- PHF -- PHF
FCLCON1
040C
--
PDC1
040E
PHASE1
0410
DTR1
0412
--
ALTDTR1
0414
--
TRIG1
0416
TRGCON1
0418
TRGDIV<2:0>
LEBCON1
041A
PHR
PWMCON2
041C
FLTSTAT
CLSTAT
IOCON2
041E
PENH
PENL
FCLCON2
0420
--
PDC2
0422
PHASE2
0424
DTR2
0426
--
Advance Information
ALTDTR2
0428
--
TRIG2
042A
TRGCON2
042C
TRGDIV<2:0>
LEBCON2
042E
PHR
PWMCON3
0430
FLTSTAT
CLSTAT
IOCON3
0432
PENH
PENL
FCLCON3
0434
--
PDC3
0436
PHASE3
0438
DTR3
043A
--
ALTDTR3
043C
--
TRIG3
043E
TRGCON3
0440
TRGDIV<2:0>
LEBCON3
0442
PHR
PWMCON4
0444
FLTSTAT
CLSTAT
dsPIC30F1010/202X
DS70178A-page 143
IOCON4
0446
PENH
PENL
TABLE 12-4:
-- PDC4<15:0> PHASE4<15:2> -- -- -- -- --LEB<9:3> -- -- -- -- -- -- -- -- -- ----TRGSTRT<5:0> -- -- -- -- -- -- -- -- -- -- -- TRIG<15:3> --PLR -- -- -- -- PLF FLTLEBEN CLLEBEN ------ALTDTR4<13:2> DTR4<13:2> -- CLSRC<3:0> CLPOL CLMODE FLTSRC<3:0> FLTPOL FLTMOD<1:0> 0000 0000 0000 0000 0000 0000 0000 0000 0000
SMPS PWM REGISTER MAP (CONTINUED)
FCLCON4
0448
--
PDC4
044A
PHASE4
044C
DTR4
044E
--
DS70178A-page 144
PHF --
ALTDTR4
0450
--
TRIG4
0452
TRGCON4
0454
TRGDIV<2:0>
LEBCON4
0456
PHR
dsPIC30F1010/202X
Reserved
045847F
--
Advance Information
(c) 2006 Microchip Technology Inc.
dsPIC30F1010/202X
13.0 SPI MODULE
Note: This data sheet summarizes features of this group of dsPIC30F devices and is not intended to be a complete reference source. For more information on the CPU, peripherals, register descriptions and general device functionality, refer to the "dsPIC30F Family Reference Manual" (DS70046).
The Serial Peripheral Interface (SPI) module is a synchronous serial interface. It is useful for communicating with other peripheral devices such as EEPROMs, shift registers, display drivers and A/D converters, or other microcontrollers. It is compatible with Motorola's SPI and SIOP interfaces. Note: The dsPIC30F1010/202X family has only one SPI module. All references to x = 2 are intended for software compatibility with other dsPIC DSC devices.
Transmit writes are also double-buffered. The user writes to SPIxBUF. When the master or slave transfer is completed, the contents of the shift register (SPIxSR) is moved to the receive buffer. If any transmit data has been written to the buffer register, the contents of the transmit buffer are moved to SPIxSR. The received data is thus placed in SPIxBUF and the transmit data in SPIxSR is ready for the next transfer. Note: Both the transmit buffer (SPIxTXB) and the receive buffer (SPIxRXB) are mapped to the same register address, SPIxBUF.
In Master mode, the clock is generated by prescaling the system clock. Data is transmitted as soon as a value is written to SPIxBUF. The interrupt is generated at the middle of the transfer of the last bit. In Slave mode, data is transmitted and received as external clock pulses appear on SCK. Again, the interrupt is generated when the last bit is latched. If SSx control is enabled, then transmission and reception are enabled only when SSx = low. The SDOx output will be disabled in SSx mode with SSx high. The clock provided to the module is (FOSC / 2). This clock is then prescaled by the primary (PPRE<1:0>) and the secondary (SPRE<2:0>) prescale factors. The CKE bit determines whether transmit occurs on transition from active clock state to Idle clock state, or vice versa. The CKP bit selects the Idle state (high or low) for the clock.
13.1
Operating Function Description
Each SPI module consists of a 16-bit shift register, SPIxSR (where x = 1 or 2), used for shifting data in and out, and a buffer register, SPIxBUF. A control register, SPIxCON, configures the module. Additionally, a Status register, SPIxSTAT, indicates various status conditions. The serial interface consists of 4 pins: SDIx (serial data input), SDOx (serial data output), SCKx (shift clock input or output), and SSx (active low slave select). In Master mode operation, SCK is a clock output, but in Slave mode, it is a clock input. A series of eight (8) or sixteen (16) clock pulses shifts out bits from the SPIxSR to SDOx pin and simultaneously shifts in data from SDIx pin. An interrupt is generated when the transfer is complete and the corresponding interrupt flag bit (SPI1IF or SPI2IF) is set. This interrupt can be disabled through an interrupt enable bit (SPI1IE or SPI2IE). The receive operation is double-buffered. When a complete byte is received, it is transferred from SPIxSR to SPIxBUF. If the receive buffer is full when new data is being transferred from SPIxSR to SPIxBUF, the module will set the SPIROV bit, indicating an Overflow condition. The transfer of the data from SPIxSR to SPIxBUF will not be completed and the new data will be lost. The module will not respond to SCL transitions while SPIROV is 1, effectively disabling the module until SPIxBUF is read by user software. Note: If the module is used in a transmit only configuration, the user application must perform a read of the SPxBUF to avoid a receive Overflow condition (SPIROV = 1).
13.1.1
WORD AND BYTE COMMUNICATION
A control bit, MODE16 (SPIxCON<10>), allows the module to communicate in either 16-bit or 8-bit mode. 16-bit operation is identical to 8-bit operation, except that the number of bits transmitted is 16 instead of 8. The user software must disable the module prior to changing the MODE16 bit. The SPI module is reset when the MODE16 bit is changed by the user. A basic difference between 8-bit and 16-bit operation is that the data is transmitted out of bit 7 of the SPIxSR for 8-bit operation, and data is transmitted out of bit 15 of the SPIxSR for 16-bit operation. In both modes, data is shifted into bit 0 of the SPIxSR.
13.1.2
SDOx DISABLE
A control bit, DISSDO, is provided to the SPIxCON register to allow the SDOx output to be disabled. This will allow the SPI module to be connected in an input only configuration. SDO can also be used for general purpose I/O.
(c) 2006 Microchip Technology Inc.
Advance Information
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dsPIC30F1010/202X
13.2 Framed SPI Support
The module supports a basic framed SPI protocol in Master or Slave mode. The control bit FRMEN enables framed SPI support and causes the SSx pin to perform the frame synchronization pulse (FSYNC) function. The control bit SPIFSD determines whether the SSx pin is an input or an output (i.e., whether the module receives or generates the frame synchronization pulse). The frame pulse is an active high pulse for a single SPI clock cycle. When frame synchronization is enabled, the data transmission starts only on the subsequent transmit edge of the SPI clock.
FIGURE 13-1:
SPI BLOCK DIAGRAM
Internal Data Bus Read SPIxBUF Receive SPIxSR Write SPIxBUF Transmit
SDIx
bit0
SDOx SS & FSYNC SSx Control
Shift clock Clock Control Edge Select Secondary Prescaler 1:1-1:8 Primary Prescaler 1:1, 1:4, 1:16, 1:64
FCY
SCKx
Enable Master Clock Note: x = 1 or 2.
FIGURE 13-2:
SPI MASTER/SLAVE CONNECTION
SPI Master SDOx SDIy
SPI Slave
Serial Input Buffer (SPIxBUF)
Serial Input Buffer (SPIyBUF)
Shift Register (SPIxSR) MSb LSb
SDIx
SDOy
Shift Register (SPIySR) MSb LSb
SCKx PROCESSOR 1
Serial Clock
SCKy PROCESSOR 2
Note: x = 1 or 2, y = 1 or 2.
DS70178A-page 146
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dsPIC30F1010/202X
13.3 Slave Select Synchronization 13.4
The SSx pin allows a Synchronous Slave mode. The SPI must be configured in SPI Slave mode, with SSx pin control enabled (SSEN = 1). When the SSx pin is low, transmission and reception are enabled, and the SDOx pin is driven. When SSx pin goes high, the SDOx pin is no longer driven. Also, the SPI module is resynchronized, and all counters/control circuitry are reset. Therefore, when the SSx pin is asserted low again, transmission/reception will begin at the Most Significant bit, even if SSx had been deasserted in the middle of a transmit/receive.
SPI Operation During CPU Sleep Mode
During Sleep mode, the SPI module is shut-down. If the CPU enters Sleep mode while an SPI transaction is in progress, then the transmission and reception is aborted. The transmitter and receiver will stop in Sleep mode. However, register contents are not affected by entering or exiting Sleep mode.
13.5
SPI Operation During CPU Idle Mode
When the device enters Idle mode, all clock sources remain functional. The SPISIDL bit (SPIxSTAT<13>) selects if the SPI module will stop or continue on Idle. If SPISIDL = 0, the module will continue to operate when the CPU enters Idle mode. If SPISIDL = 1, the module will stop when the CPU enters Idle mode.
(c) 2006 Microchip Technology Inc.
Advance Information
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TABLE 13-1:
Bit 13 SPISIDL SPIFSD Transmit and Receive Buffer -- DISSDO MODE16 SMP CKE SSEN CKP MSTEN SPRE2 SPRE1 SPRE0 PPRE1 PPRE0 -- -- -- -- -- -- SPIROV -- -- -- -- SPITBF Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Reset State
SPI1 REGISTER MAP
SFR Name
Addr.
Bit 15
Bit 14
SPI1STAT
0240
SPIEN
--
SPIRBF 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
SPI1CON
0242
--
FRMEN
DS70178A-page 148
SPI1BUF 0244 Legend: u = uninitialized bit
dsPIC30F1010/202X
Note: Refer to the "dsPIC30F Family Reference Manual" (DS70046) for descriptions of register bit fields.
Advance Information
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dsPIC30F1010/202X
14.0 I2CTM MODULE
14.1 Operating Function Description
Note: This data sheet summarizes features of this group of dsPIC30F devices and is not intended to be a complete reference source. For more information on the CPU, peripherals, register descriptions and general device functionality, refer to the "dsPIC30F Family Reference Manual" (DS70046).
The hardware fully implements all the master and slave functions of the I2C Standard and Fast mode specifications, as well as 7 and 10-bit addressing. Thus, the I2C module can operate either as a slave or a master on an I2C bus.
The Inter-Integrated Circuit (I2C) module provides complete hardware support for both Slave and MultiMaster modes of the I2C serial communication standard, with a 16-bit interface. This module offers the following key features: * I2C interface supporting both Master and Slave operation. * I2C Slave mode supports 7 and 10-bit address * I2C Master mode supports 7 and 10-bit address * I2C port allows bidirectional transfers between master and slaves. * Serial clock synchronization for I2C port can be used as a handshake mechanism to suspend and resume serial transfer (SCLREL control). * I2C supports Multi-Master operation; detects bus collision and will arbitrate accordingly.
14.1.1
* *
VARIOUS I2C MODES
The following types of I2C operation are supported: I2C Slave operation with 7 or 10-bit address I2C Master operation with 7 or 10-bit address
See the I2C programmer's model in Figure 14-1.
14.1.2
PIN CONFIGURATION IN I2C MODE
I2C has a 2-pin interface; pin SCL is clock and pin SDA is data.
FIGURE 14-1:
PROGRAMMER'S MODEL
I2CRCV (8 bits) bit 7 bit 7 bit 8 bit 15 bit 15 bit 9 bit 0 I2CTRN (8 bits) bit 0 I2CBRG (9 bits) bit 0 I2CCON (16 bits) bit 0 I2CSTAT (16 bits) bit 0 I2CADD (10 bits) bit 0 The I2CADD register holds the slave address. A status bit, ADD10, indicates 10-bit Address mode. The I2CBRG acts as the Baud Rate Generator (BRG) reload value. In receive operations, I2CRSR and I2CRCV together form a double-buffered receiver. When I2CRSR receives a complete byte, it is transferred to I2CRCV and an interrupt pulse is generated. During transmission, the I2CTRN is not double-buffered. Note: Following a Restart condition in 10-bit mode, the user only needs to match the first 7-bit address.
14.1.3
I2C REGISTERS
I2CCON and I2CSTAT are Control and Status registers, respectively. The I2CCON register is readable and writable. The lower 6 bits of I2CSTAT are read-only. The remaining bits of the I2CSTAT are read/write. I2CRSR is the shift register used for shifting data, whereas I2CRCV is the buffer register to which data bytes are written, or from which data bytes are read. I2CRCV is the receive buffer, as shown in Figure 16-1. I2CTRN is the transmit register to which bytes are written during a transmit operation, as shown in Figure 16-2.
(c) 2006 Microchip Technology Inc.
Advance Information
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dsPIC30F1010/202X
FIGURE 14-2: I2CTM BLOCK DIAGRAM
Internal Data Bus
I2CRCV Read SCL Shift Clock I2CRSR LSB SDA Match Detect Addr_Match Write I2CADD Read Start and Stop bit Detect Write Start, Restart, Stop bit Generate Control Logic I2CSTAT
Read
Collision Detect
Write I2CCON
Acknowledge Generation Clock Stretching I2CTRN Shift Clock Reload Control I2CBRG FCY LSB
Read
Write
Read
Write
BRG Down Counter
Read
DS70178A-page 150
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dsPIC30F1010/202X
14.2 I2C Module Addresses
The I2CADD register contains the Slave mode addresses. The register is a 10-bit register. If the A10M bit (I2CCON<10>) is `0', the address is interpreted by the module as a 7-bit address. When an address is received, it is compared to the 7 Least Significant bits of the I2CADD register. If the A10M bit is `1', the address is assumed to be a 10-bit address. When an address is received, it will be compared with the binary value `1 1 1 1 0 A9 A8' (where A9, A8 are two Most Significant bits of I2CADD). If that value matches, the next address will be compared with the Least Significant 8 bits of I2CADD, as specified in the 10-bit addressing protocol. If the RBF flag is set, indicating that I2CRCV is still holding data from a previous operation (RBF = 1), then ACK is not sent; however, the interrupt pulse is generated. In the case of an overflow, the contents of the I2CRSR are not loaded into the I2CRCV. Note: The I2CRCV will be loaded if the I2COV bit = 1 and the RBF flag = 0. In this case, a read of the I2CRCV was performed, but the user did not clear the state of the I2COV bit before the next receive occurred. The acknowledgement is not sent (ACK = 1) and the I2CRCV is updated.
14.4
I2C 10-bit Slave Mode Operation
14.3
I2C 7-bit Slave Mode Operation
Once enabled (I2CEN = 1), the slave module will wait for a Start bit to occur (i.e., the I2C module is `Idle'). Following the detection of a Start bit, 8 bits are shifted into I2CRSR and the address is compared against I2CADD. In 7-bit mode (A10M = 0), bits I2CADD<6:0> are compared against I2CRSR<7:1> and I2CRSR<0> is the R_W bit. All incoming bits are sampled on the rising edge of SCL. If an address match occurs, an acknowledgement will be sent, and the slave event interrupt flag (SI2CIF) is set on the falling edge of the ninth (ACK) bit. The address match does not affect the contents of the I2CRCV buffer or the RBF bit.
In 10-bit mode, the basic receive and transmit operations are the same as in the 7-bit mode. However, the criteria for address match is more complex. The I2C specification dictates that a slave must be addressed for a write operation, with two address bytes following a Start bit. The A10M bit is a control bit that signifies that the address in I2CADD is a 10-bit address rather than a 7-bit address. The address detection protocol for the first byte of a message address is identical for 7-bit and 10-bit messages, but the bits being compared are different. I2CADD holds the entire 10-bit address. Upon receiving an address following a Start bit, I2CRSR <7:3> is compared against a literal `11110' (the default 10-bit address) and I2CRSR<2:1> are compared against I2CADD<9:8>. If a match occurs and if R_W = 0, the interrupt pulse is sent. The ADD10 bit will be cleared to indicate a partial address match. If a match fails or R_W = 1, the ADD10 bit is cleared and the module returns to the Idle state. The low byte of the address is then received and compared with I2CADD<7:0>. If an address match occurs, the interrupt pulse is generated and the ADD10 bit is set, indicating a complete 10-bit address match. If an address match did not occur, the ADD10 bit is cleared and the module returns to the Idle state.
14.3.1
SLAVE TRANSMISSION
If the R_W bit received is a `1', then the serial port will go into Transmit mode. It will send ACK on the ninth bit and then hold SCL to `0' until the CPU responds by writing to I2CTRN. SCL is released by setting the SCLREL bit, and 8 bits of data are shifted out. Data bits are shifted out on the falling edge of SCL, such that SDA is valid during SCL high (see timing diagram). The interrupt pulse is sent on the falling edge of the ninth clock pulse, regardless of the status of the ACK received from the master.
14.3.2
SLAVE RECEPTION 14.4.1 10-BIT MODE SLAVE TRANSMISSION
If the R_W bit received is a `0' during an address match, then Receive mode is initiated. Incoming bits are sampled on the rising edge of SCL. After 8 bits are received, if I2CRCV is not full or I2COV is not set, I2CRSR is transferred to I2CRCV. ACK is sent on the ninth clock.
Once a slave is addressed in this fashion, with the full 10-bit address (we will refer to this state as "PRIOR_ADDR_MATCH"), the master can begin sending data bytes for a slave reception operation.
14.4.2
10-BIT MODE SLAVE RECEPTION
Once addressed, the master can generate a Repeated Start, reset the high byte of the address and set the R_W bit without generating a Stop bit, thus initiating a slave transmit operation.
(c) 2006 Microchip Technology Inc.
Advance Information
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dsPIC30F1010/202X
14.5 Automatic Clock Stretch
In the Slave modes, the module can synchronize buffer reads and write to the master device by clock stretching. Note 1: If the user reads the contents of the I2CRCV, clearing the RBF bit before the falling edge of the ninth clock, the SCLREL bit will not be cleared and clock stretching will not occur. 2: The SCLREL bit can be set in software, regardless of the state of the RBF bit. The user should be careful to clear the RBF bit in the ISR before the next receive sequence in order to prevent an Overflow condition.
14.5.1
TRANSMIT CLOCK STRETCHING
Both 10-bit and 7-bit Transmit modes implement clock stretching by asserting the SCLREL bit after the falling edge of the ninth clock if the TBF bit is cleared, indicating the buffer is empty. In Slave Transmit modes, clock stretching is always performed, irrespective of the STREN bit. Clock synchronization takes place following the ninth clock of the transmit sequence. If the device samples an ACK on the falling edge of the ninth clock, and if the TBF bit is still clear, then the SCLREL bit is automatically cleared. The SCLREL being cleared to `0' will assert the SCL line low. The user's ISR must set the SCLREL bit before transmission is allowed to continue. By holding the SCL line low, the user has time to service the ISR and load the contents of the I2CTRN before the master device can initiate another transmit sequence. Note 1: If the user loads the contents of I2CTRN, setting the TBF bit before the falling edge of the ninth clock, the SCLREL bit will not be cleared and clock stretching will not occur. 2: The SCLREL bit can be set in software, regardless of the state of the TBF bit.
14.5.4
CLOCK STRETCHING DURING 10-BIT ADDRESSING (STREN = 1)
Clock stretching takes place automatically during the addressing sequence. Because this module has a register for the entire address, it is not necessary for the protocol to wait for the address to be updated. After the address phase is complete, clock stretching will occur on each data receive or transmit sequence as was described earlier.
14.6
Software Controlled Clock Stretching (STREN = 1)
14.5.2
RECEIVE CLOCK STRETCHING
The STREN bit in the I2CCON register can be used to enable clock stretching in Slave Receive mode. When the STREN bit is set, the SCL pin will be held low at the end of each data receive sequence.
When the STREN bit is `1', the SCLREL bit may be cleared by software to allow software to control the clock stretching. The logic will synchronize writes to the SCLREL bit with the SCL clock. Clearing the SCLREL bit will not assert the SCL output until the module detects a falling edge on the SCL output and SCL is sampled low. If the SCLREL bit is cleared by the user while the SCL line has been sampled low, the SCL output will be asserted (held low). The SCL output will remain low until the SCLREL bit is set, and all other devices on the I2C bus have deasserted SCL. This ensures that a write to the SCLREL bit will not violate the minimum high time requirement for SCL. If the STREN bit is `0', a software write to the SCLREL bit will be disregarded and have no effect on the SCLREL bit.
14.5.3
CLOCK STRETCHING DURING 7-BIT ADDRESSING (STREN = 1)
When the STREN bit is set in Slave Receive mode, the SCL line is held low when the buffer register is full. The method for stretching the SCL output is the same for both 7 and 10-bit Addressing modes. Clock stretching takes place following the ninth clock of the receive sequence. On the falling edge of the ninth clock at the end of the ACK sequence, if the RBF bit is set, the SCLREL bit is automatically cleared, forcing the SCL output to be held low. The user's ISR must set the SCLREL bit before reception is allowed to continue. By holding the SCL line low, the user has time to service the ISR and read the contents of the I2CRCV before the master device can initiate another receive sequence. This will prevent buffer overruns from occurring.
14.7
Interrupts
The I2C module generates two interrupt flags, MI2CIF (I2C Master Interrupt Flag) and SI2CIF (I2C Slave Interrupt Flag). The MI2CIF interrupt flag is activated on completion of a master message event. The SI2CIF interrupt flag is activated on detection of a message directed to the slave.
DS70178A-page 152
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dsPIC30F1010/202X
14.8 Slope Control 14.12 I2C Master Operation
The master device generates all of the serial clock pulses and the Start and Stop conditions. A transfer is ended with a Stop condition or with a Repeated Start condition. Since the Repeated Start condition is also the beginning of the next serial transfer, the I2C bus will not be released. In Master Transmitter mode, serial data is output through SDA, while SCL outputs the serial clock. The first byte transmitted contains the slave address of the receiving device (7 bits) and the data direction bit. In this case, the data direction bit (R_W) is logic `0'. Serial data is transmitted 8 bits at a time. After each byte is transmitted, an ACK bit is received. Start and Stop conditions are output to indicate the beginning and the end of a serial transfer. In Master Receive mode, the first byte transmitted contains the slave address of the transmitting device (7 bits) and the data direction bit. In this case, the data direction bit (R_W) is logic 1. Thus, the first byte transmitted is a 7-bit slave address, followed by a `1' to indicate receive bit. Serial data is received via SDA, while SCL outputs the serial clock. Serial data is received 8 bits at a time. After each byte is received, an ACK bit is transmitted. Start and Stop conditions indicate the beginning and end of transmission. The I2C standard requires slope control on the SDA and SCL signals for Fast mode (400 kHz). The control bit, DISSLW, enables the user to disable slew rate control, if desired. It is necessary to disable the slew rate control for 1 MHz mode.
14.9
IPMI Support
The control bit IPMIEN enables the module to support Intelligent Peripheral Management Interface (IPMI). When this bit is set, the module accepts and acts upon all addresses.
14.10 General Call Address Support
The general call address can address all devices. When this address is used, all devices should, in theory, respond with an acknowledgement. The general call address is one of eight addresses reserved for specific purposes by the I2C protocol. It consists of all `0's with R_W = 0. The general call address is recognized when the General Call Enable (GCEN) bit is set (I2CCON<15> = 1). Following a Start bit detection, 8 bits are shifted into I2CRSR and the address is compared with I2CADD, and is also compared with the general call address which is fixed in hardware. If a general call address match occurs, the I2CRSR is transferred to the I2CRCV after the eighth clock, the RBF flag is set, and, on the falling edge of the ninth bit (ACK bit), the master event interrupt flag (MI2CIF) is set. When the interrupt is serviced, the source for the interrupt can be checked by reading the contents of the I2CRCV to determine if the address was device specific, or a general call address.
14.12.1
I2C MASTER TRANSMISSION
14.11 I2C Master Support
As a Master device, six operations are supported. * Assert a Start condition on SDA and SCL. * Assert a Restart condition on SDA and SCL. * Write to the I2CTRN register initiating transmission of data/address. * Generate a Stop condition on SDA and SCL. * Configure the I2C port to receive data. * Generate an ACK condition at the end of a received byte of data.
Transmission of a data byte, a 7-bit address, or the second half of a 10-bit address is accomplished by simply writing a value to I2CTRN register. The user should only write to I2CTRN when the module is in a WAIT state. This action will set the Buffer Full Flag (TBF) and allow the Baud Rate Generator to begin counting and start the next transmission. Each bit of address/data will be shifted out onto the SDA pin after the falling edge of SCL is asserted. The Transmit Status Flag, TRSTAT (I2CSTAT<14>), indicates that a master transmit is in progress.
14.12.2
I2C MASTER RECEPTION
Master mode reception is enabled by programming the receive enable (RCEN) bit (I2CCON<11>). The I2C module must be Idle before the RCEN bit is set, otherwise the RCEN bit will be disregarded. The Baud Rate Generator begins counting, and, on each rollover, the state of the SCL pin toggles, and data is shifted in to the I2CRSR on the rising edge of each clock.
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14.12.3
2
BAUD RATE GENERATOR
In I C Master mode, the reload value for the BRG is located in the I2CBRG register. When the BRG is loaded with this value, the BRG counts down to `0' and stops until another reload has taken place. If clock arbitration is taking place, for instance, the BRG is reloaded when the SCL pin is sampled high. As per the I2C standard, FSCK may be 100 kHz or 400 kHz. However, the user can specify any baud rate up to 1 MHz. I2CBRG values of `0' or `1' are illegal.
If a Start, Restart, Stop or Acknowledge condition was in progress when the bus collision occurred, the condition is aborted, the SDA and SCL lines are deasserted, and the respective control bits in the I2CCON register are cleared to `0'. When the user services the bus collision Interrupt Service Routine, and if the I2C bus is free, the user can resume communication by asserting a Start condition. The Master will continue to monitor the SDA and SCL pins and, if a Stop condition occurs, the MI2CIF bit will be set. A write to the I2CTRN will start the transmission of data at the first data bit, regardless of where the transmitter left off when bus collision occurred. In a Multi-Master environment, the interrupt generation on the detection of Start and Stop conditions allows the determination of when the bus is free. Control of the I2C bus can be taken when the P bit is set in the I2CSTAT register, or the bus is Idle and the S and P bits are cleared.
EQUATION 14-1:
I2CBRG VALUE
Fcy Fcy I2CBRG = ---------- - -------------------------- - 1 Fscl 1, 111, 111
14.12.4
CLOCK ARBITRATION
Clock arbitration occurs when the master deasserts the SCL pin (SCL allowed to float high) during any receive, transmit or Restart/Stop condition. When the SCL pin is allowed to float high, the Baud Rate Generator is suspended from counting until the SCL pin is actually sampled high. When the SCL pin is sampled high, the Baud Rate Generator is reloaded with the contents of I2CBRG and begins counting. This ensures that the SCL high time will always be at least one BRG rollover count in the event that the clock is held low by an external device.
14.13 I2C Module Operation During CPU Sleep and Idle Modes
14.13.1 I2C OPERATION DURING CPU SLEEP MODE
14.12.5
MULTI-MASTER COMMUNICATION, BUS COLLISION AND BUS ARBITRATION
When the device enters Sleep mode, all clock sources to the module are shutdown and stay at logic `0'. If Sleep occurs in the middle of a transmission, and the state machine is partially into a transmission as the clocks stop, then the transmission is aborted. Similarly, if Sleep occurs in the middle of a reception, then the reception is aborted.
Multi-Master operation support is achieved by bus arbitration. When the master outputs address/data bits onto the SDA pin, arbitration takes place when the master outputs a `1' on SDA, by letting SDA float high while another master asserts a `0'. When the SCL pin floats high, data should be stable. If the expected data on SDA is a `1' and the data sampled on the SDA pin = 0, then a bus collision has taken place. The master will set the MI2CIF pulse and reset the master portion of the I2C port to its Idle state. If a transmit was in progress when the bus collision occurred, the transmission is halted, the TBF flag is cleared, the SDA and SCL lines are deasserted, and a value can now be written to I2CTRN. When the user services the I2C master event Interrupt Service Routine, if the I2C bus is free (i.e., the P bit is set) the user can resume communication by asserting a Start condition.
14.13.2
I2C OPERATION DURING CPU IDLE MODE
For the I2C, the I2CSIDL bit selects if the module will stop on Idle or continue on Idle. If I2CSIDL = 0, the module will continue operation on assertion of the Idle mode. If I2CSIDL = 1, the module will stop on Idle.
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TABLE 14-1:
Bit 13 -- Receive Register Transmit Register Baud Rate Generator SMEN ADD10 Address Register IWCOL I2COV D_A P S R_W RBF TBF GCEN STREN ACKDT ACKEN RCEN PEN RSEN SEN -- -- -- DISSLW GCSTAT -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Reset State -- -- -- --
I2CTM REGISTER MAP
0000 0000 0000 0000 0000 0000 1111 1111 0000 0000 0000 0000 0001 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
SFR Name Addr.
Bit 15
Bit 14
I2CRCV
0200
--
I2CTRN
0202
--
I2CBRG
0204
--
I2CCON
0206
I2CEN
I2CSTAT
0208
I2CADD
020A
ACKSTAT --
I2CSIDL SCLREL IPMIEN -- -- -- TRSTAT -- -- -- --
(c) 2006 Microchip Technology Inc.
Note: Refer to the "dsPIC30F Family Reference Manual" (DS70046) for descriptions of register bit fields.
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NOTES:
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15.0 UNIVERSAL ASYNCHRONOUS RECEIVER TRANSMITTER (UART) MODULE
* Baud Rates Ranging from 1 Mbps to 15 bps at 16 MIPS * 4-Deep First-In-First-Out (FIFO) Transmit Data Buffer * 4-Deep FIFO Receive Data Buffer * Parity, Framing and Buffer Overrun Error Detection * Support for 9-bit mode with Address Detect (9th bit = 1) * Transmit and Receive Interrupts * Loopback mode for Diagnostic Support * Support for Sync and Break Characters * Supports Automatic Baud Rate Detection * IrDA Encoder and Decoder Logic * 16x Baud Clock Output for IrDA Support A simplified block diagram of the UART is shown in Figure 15-1. The UART module consists of these key important hardware elements: * Baud Rate Generator * Asynchronous Transmitter * Asynchronous Receiver
Note: This data sheet summarizes features of this group of dsPIC30F devices and is not intended to be a complete reference source. For more information on the CPU, peripherals, register descriptions and general device functionality, refer to the "dsPIC30F Family Reference Manual" (DS70046).
The Universal Asynchronous Receiver Transmitter (UART) module is one of the serial I/O modules available in the dsPIC30F1010/202X device family. The UART is a full-duplex asynchronous system that can communicate with peripheral devices, such as personal computers, LIN, RS-232 and RS-485 interfaces. The module also includes an IrDA encoder and decoder. The primary features of the UART module are: * Full-Duplex 8 or 9-bit Data Transmission through the U1TX and U1RX pins * Even, Odd or No Parity Options (for 8-bit data) * One or Two Stop bits * Fully Integrated Baud Rate Generator with 16-bit Prescaler
FIGURE 15-1:
UART SIMPLIFIED BLOCK DIAGRAM
Baud Rate Generator
IrDA(R)
UART1 Receiver
U1RX
UART1 Transmitter
U1TX
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15.1 UART Baud Rate Generator (BRG)
The UART module includes a dedicated 16-bit Baud Rate Generator. The U1BRG register controls the period of a free-running 16-bit timer. Equation 15-1 shows the formula for computation of the baud rate with BRGH = 0. The maximum baud rate (BRGH = 0) possible is FCY/16 (for U1BRG = 0), and the minimum baud rate possible is FCY/(16 * 65536). Equation 15-2 shows the formula for computation of the baud rate with BRGH = 1.
EQUATION 15-2:
EQUATION 15-1:
UART BAUD RATE WITH BRGH = 0(1,2)
FCY 16 * (U1BRG + 1)
UART BAUD RATE WITH BRGH = 1(1,2)
FCY 4 * (U1BRG + 1) FCY 4 * Baud Rate -1
Baud Rate =
Baud Rate =
U1BRG = U1BRG = FCY -1 16 * Baud Rate
Note 1: FCY denotes the instruction cycle clock frequency (FOSC/2). 2: Based on TCY = 2/FOSC, PLL are disabled. Example 15-1 shows the calculation of the baud rate error for the following conditions: * FCY = 4 MHz * Desired Baud Rate = 9600
Note 1: FCY denotes the instruction cycle clock frequency. 2: Based on TCY = 2/FOSC, PLL are disabled. The maximum baud rate (BRGH = 1) possible is FCY/4 (for U1BRG = 0) and the minimum baud rate possible is FCY/(4 * 65536). Writing a new value to the U1BRG register causes the BRG timer to be reset (cleared). This ensures the BRG does not wait for a timer overflow before generating the new baud rate.
EXAMPLE 15-1:
Desired Baud Rate U1BRG U1BRG U1BRG
BAUD RATE ERROR CALCULATION (BRGH = 0)(1)
= FCY/(16 (U1BRG + 1)) = ((FCY/Desired Baud Rate)/16) - 1 = ((4000000/9600)/16) - 1 = 25
Solving for U1BRG value:
Calculated Baud Rate = 4000000/(16 (25 + 1)) = 9615 Error = (Calculated Baud Rate - Desired Baud Rate) Desired Baud Rate = (9615 - 9600)/9600 = 0.16%
Note 1: Based on TCY = 2/FOSC, PLL are disabled.
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15.2
1.
Transmitting in 8-bit Data Mode
15.4
2. 3. 4.
5.
6.
Set up the UART: a) Write appropriate values for data, parity and Stop bits. b) Write appropriate baud rate value to the U1BRG register. c) Set up transmit and receive interrupt enable and priority bits. Enable the UART. Set the UTXEN bit (causes a transmit interrupt). Write data byte to lower byte of TXxREG word. The value will be immediately transferred to the Transmit Shift Register (TSR), and the serial bit stream will start shifting out with next rising edge of the baud clock. Alternately, the data byte may be transferred while UTXEN = 0, and then the user may set UTXEN. This will cause the serial bit stream to begin immediately because the baud clock will start from a cleared state. A transmit interrupt will be generated as per interrupt control bit, UTXISELx.
Break and Sync Transmit Sequence
The following sequence will send a message frame header made up of a Break, followed by an auto-baud Sync byte. 1. 2. 3. 4. 5. Configure the UART for the desired mode. Set UTXEN and UTXBRK - sets up the Break character, Load the TXxREG with a dummy character to initiate transmission (value is ignored). Write `55h' to TXxREG - loads Sync character into the transmit FIFO. After the Break has been sent, the UTXBRK bit is reset by hardware. The Sync character now transmits.
15.5
1. 2. 3.
Receiving in 8-bit or 9-bit Data Mode
15.3
1. 2. 3. 4. 5.
Transmitting in 9-bit Data Mode
4.
6.
Set up the UART (as described in Section 15.2 "Transmitting in 8-bit Data Mode"). Enable the UART. Set the UTXEN bit (causes a transmit interrupt). Write TXxREG as a 16-bit value only. A word write to TXxREG triggers the transfer of the 9-bit data to the TSR. Serial bit stream will start shifting out with the first rising edge of the baud clock. A transmit interrupt will be generated as per the setting of control bit, UTXISELx.
5.
Set up the UART (as described in Section 15.2 "Transmitting in 8-bit Data Mode"). Enable the UART. A receive interrupt will be generated when one or more data characters have been received as per interrupt control bit, URXISELx. Read the OERR bit to determine if an overrun error has occurred. The OERR bit must be reset in software. Read RXxREG.
The act of reading the RXxREG character will move the next character to the top of the receive FIFO, including a new set of PERR and FERR values.
15.6
Built-in IrDA Encoder and Decoder
The UART has full implementation of the IrDA encoder and decoder as part of the UART module. The built-in IrDA encoder and decoder functionality is enabled using the IREN bit U1MODE<12>. When enabled (IREN = 1), the receive pin (U1RX) acts as the input from the infrared receiver. The transmit pin (U1TX) acts as the output to the infrared transmitter.
15.7
Alternate UART I/O Pins
An alternate set of I/O pins, U1ATX and U1ARX can be used for communications. The alternate UART pins are useful when the primary UART pins are shared by other peripherals. The alternate I/O pins are enabled by setting the ALTIO bit in the UxMODE register. If ALTIO = 1, the U1ATX and U1ARX pins are used by the UART module, instead of the U1TX and U1RX pins. If ALTIO = 0, the U1TX and U1RX pins are used by the UART module.
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REGISTER 15-1:
R/W-0 UARTEN bit 15 R/W-0 HC WAKE bit 7 Legend: R = Readable bit -n = Value at POR bit 15 U = Unimplemented bit, read as `0' W = Writable bit `1' = Bit is set HC = Hardware Cleared `0' = Bit is cleared HS = Hardware Select x = Bit is unknown R/W-0 LPBACK R/W-0 HC ABAUD R/W-0 RXINV R/W-0 BRGH R/W-0 PDSEL1 R/W-0 PDSEL0
U1MODE: UART1 MODE REGISTER
U-0 - R/W-0 USIDL R/W-0 IREN U-0 - R/W-0 ALTIO U-0 - U-0 - bit 8 R/W-0 STSEL bit 0
UARTEN: UART1 Enable bit 1 = UART1 is enabled; all UART1 pins are controlled by UART1 as defined by UEN<1:0> 0 = UART1 is disabled; all UART1 pins are controlled by PORT latches; UART1 power consumption minimal Unimplemented: Read as `0' USIDL: Stop in Idle Mode bit 1 = Discontinue module operation when device enters Idle mode 0 = Continue module operation in Idle mode IREN: IrDA Encoder and Decoder Enable bit 1 = IrDA encoder and decoder enabled 0 = IrDA encoder and decoder disabled Note: This feature is only available for the 16x BRG mode (BRGH = 0). Unimplemented: Read as `0' ALTIO: UART Alternate I/O Selection bit 1 = UART communicates using U1ATX and U1ARX I/O pins 0 = UART communicates using U1TX and U1RX I/O pins. Unimplemented: Read as `0' WAKE: Wake-up on Start bit Detect During Sleep Mode Enable bit 1 = UART1 will continue to sample the U1RX pin; interrupt generated on falling edge, bit cleared in hardware on following rising edge 0 = No wake-up enabled LPBACK: UART1 Loopback Mode Select bit 1 = Enable Loopback mode 0 = Loopback mode is disabled ABAUD: Auto-Baud Enable bit 1 = Enable baud rate measurement on the next character - requires reception of a Sync field (55h); cleared in hardware upon completion 0 = Baud rate measurement disabled or completed RXINV: Receive Polarity Inversion bit 1 = U1RX Idle state is `0' 0 = U1RX Idle state is `1' BRGH: High Baud Rate Enable bit 1 = BRG generates 4 clocks per bit period (4x Baud Clock, High-Speed mode) 0 = BRG generates 16 clocks per bit period (16x Baud Clock, Standard mode)
bit 14 bit 13
bit 12
bit 11 bit 10
bit 9-8 bit 7
bit 6
bit 5
bit 4
bit 3
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REGISTER 15-1:
bit 2-1
U1MODE: UART1 MODE REGISTER
PDSEL1:PDSEL0: Parity and Data Selection bits 11 = 9-bit data, no parity 10 = 8-bit data, odd parity 01 = 8-bit data, even parity 00 = 8-bit data, no parity STSEL: Stop Bit Selection bit 1 = Two Stop bits 0 = One Stop bit
bit 0
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REGISTER 15-2:
R/W-0 UTXISEL1 bit 15 R/W-0 URXISEL1 bit 7 Legend: R = Readable bit -n = Value at POR bit 15, 13 U = Unimplemented bit, read as `0' W = Writable bit `1' = Bit is set HS =Hardware Set `0' = Bit is cleared HC = Hardware Cleared x = Bit is unknown R/W-0 URXISEL0 R/W-0 ADDEN R/W-0 RIDLE R/W-0 PERR R/W-0 FERR R/W-0 OERR
U1STA: UART1 STATUS AND CONTROL REGISTER
R/W-0 R/W-0 UTXISEL0 U-0 -- R/W-0 UTXBRK R/W-0 UTXEN R/W-0 UTXBF R/W-0 TRMT bit 8 R/W-0 URXDA bit 0
UTXINV(1)
UTXISEL1:UTXISEL0: Transmission Interrupt Mode Selection bits 11 = Reserved; do not use 10 = Interrupt when a character is transferred to the Transmit Shift Register and as a result, the transmit buffer becomes empty 01 = Interrupt when the last character is shifted out of the Transmit Shift Register; all transmit operations are completed 00 =Interrupt when a character is transferred to the Transmit Shift Register (this implies there is at least one character open in the transmit buffer) UTXINV: IrDA Encoder Transmit Polarity Inversion bit(1) 1 = IrDA encoded U1TX idle state is `1' 0 = IrDA encoded U1TX idle state is `0' Note 1: Value of bit only affects the transmit properties of the module when the IrDA encoder is enabled (IREN = 1).
bit 14
bit 12 bit 11
Unimplemented: Read as `0' UTXBRK: Transmit Break bit 1 = Send Sync Break on next transmission - Start bit, followed by twelve `0' bits, followed by Stop bit; cleared by hardware upon completion 0 = Sync Break transmission disabled or completed UTXEN: Transmit Enable bit 1 = Transmit enabled, U1TX pin controlled by UART1 0 = Transmit disabled, any pending transmission is aborted and buffer is reset. U1TX pin controlled by PORT. UTXBF: Transmit Buffer Full Status bit (Read-Only) 1 = Transmit buffer is full 0 = Transmit buffer is not full, at least one more character can be written TRMT: Transmit Shift Register Empty bit (Read-Only) 1 = Transmit Shift Register is empty and transmit buffer is empty (the last transmission has completed) 0 = Transmit Shift Register is not empty, a transmission is in progress or queued URXISEL1:URXISEL0: Receive Interrupt Mode Selection bits 11 = Interrupt is set on RSR transfer, making the receive buffer full (i.e., has 4 data characters) 10 = Interrupt is set on RSR transfer, making the receive buffer 3/4 full (i.e., has 3 data characters) 0x =Interrupt is set when any character is received and transferred from the RSR to the receive buffer. Receive buffer has one or more characters. ADDEN: Address Character Detect bit (bit 8 of received data = 1) 1 = Address Detect mode enabled. If 9-bit mode is not selected, this does not take effect. 0 = Address Detect mode disabled
bit 10
bit 9
bit 8
bit 7-6
bit 5
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REGISTER 15-2:
bit 4
U1STA: UART1 STATUS AND CONTROL REGISTER
RIDLE: Receiver Idle bit (Read-Only) 1 = Receiver is Idle 0 = Receiver is active PERR: Parity Error Status bit (Read-Only) 1 = Parity error has been detected for the current character (character at the top of the receive FIFO) 0 = Parity error has not been detected FERR: Framing Error Status bit (Read-Only) 1 = Framing error has been detected for the current character (character at the top of the receive FIFO) 0 = Framing error has not been detected OERR: Receive Buffer Overrun Error Status bit (Read/Clear-Only) 1 = Receive buffer has overflowed 0 = Receive buffer has not overflowed (clearing a previously set OERR bit (1 0 transition) will reset the receiver buffer and the RSR to the empty state) URXDA: Receive Buffer Data Available bit (Read-Only) 1 = Receive buffer has data, at least one more character can be read 0 = Receive buffer is empty
bit 3
bit 2
bit 1
bit 0
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TABLE 15-1:
Bit 13 USIDL -- -- -- Baud Rate Generator Prescaler -- -- -- UART Receive Register -- -- -- UART Transmit Register UTXBRK UTXEN UTXBF TRMT URXISEL<1:0> ADDEN RIDLE PERR FERR OERR IREN -- ALTIO -- -- WAKE LPBACK ABAUD RXINV BRGH PDSEL<1:0> STSEL URXDA Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
UART1 REGISTER MAP
All Resets 0000 0110 xxxx 0000 0000
SFR Name --
SFR Addr
Bit 15
Bit 14
U1MODE
0220
UARTEN
DS70178A-page 164
-- -- -- --
U1STA
0222
UTXISEL1
UTXINV UTXISEL0
U1TXREG
0224
--
U1RXREG
0226
--
U1BRG
0228
dsPIC30F1010/202X
Legend:
x = unknown value on Reset, -- = unimplemented, read as `0'. Reset values are shown in hexadecimal.
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16.0 10-BIT 2 MSPS ANALOG-TODIGITAL CONVERTER (ADC) MODULE
In addition, several hardware features have been added to the peripheral interface to improve real-time performance in a typical DSP based application. 1. Result alignment options 2. Automated sampling 3. External conversion start control A block diagram of the ADC module is shown in Figure 16-1.
The dsPIC30F1010/202X devices provide high-speed successive approximation analog to digital conversions to support applications such as AC/DC and DC/DC power converters.
16.1
* * * * * * * *
Features
16.3
Module Functionality
10-bit resolution Uni-polar Inputs Up to 12 input channels 1 LSB accuracy Single supply operation 2000 ksps conversion rate at 5V 1000 ksps conversion rate at 3.0V Low power CMOS technology
The 10-bit 2 Msps ADC is designed to support power conversion applications when used with the Power Supply PWM module. The 10-bit 2 Msps ADC samples up to N (N 12) inputs at a time and then converts two sampled inputs at a time. The quantity of sample and hold circuits is determined by a device's requirements. The10-Bit 2 Msps ADC produces two 10-bit conversion results in 1 microsecond. The ADC module supports up to 12 analog inputs. The sampled inputs are connected, via multiplexers, to the converter. The analog reference voltage is defined as the device supply voltage (AVDD / AVSS). The A/D module uses these Control and Status registers: * * * * * * * A/D Control Register (ADCON) A/D Status Register (ADSTAT) A/D Base Register (ADBASE)(1) A/D Port Configuration Register (ADPCFG) A/D Convert Pair Control Register #0 (ADCPC0) A/D Convert Pair Control Register #1 (ADCPC1) A/D Convert Pair Control Register #2 (ADCPC2)
16.2
Description
This ADC module is designed for applications that require low latency between the request for conversion and the resultant output data. Typical applications include: * AC/DC power supplies * DC/DC converters * Power factor Correction This ADC works with the Power Supply PWM module in power control applications that require high-frequency control loops. This module can sample and convert two analog inputs in one microsecond. The one microsecond conversion delay reduces the "phase lag" between measurement and control system response. Up to 4 inputs may be sampled at a time, and up to 12 inputs may request conversion at a time. If multiple inputs request conversion, the ADC will convert them in a sequential manner starting with the lowest order input. This ADC design provides each pair of analog inputs (AN1,AN0), (AN3,AN2), ... , the ability to specify its own trigger source out of a maximum of sixteen different trigger sources. This capability allows this ADC to sample and convert analog inputs that are associated with PWM generators operating on independent time bases. There is no operation during Sleep mode. The user applications typically require synchronization between analog data sampling and PWM output to the application circuit. The very high speed operation of this ADC module allows "data on demand".
The ADCON register controls the operation of the ADC module. The ADSTAT register displays the status of the conversion processes. The ADPCFG registers configure the port pins as analog inputs or as digital I/O. The CPC registers control the triggering of the ADC conversions. (See Register 16-1 through Register 16-7 for detailed bit configurations.)
Note: A unique feature of the ADC module is its ability to sample inputs in an asynchronous manner. Individual sample and hold circuits can be triggered independently of each other.
Note: The PLL must be enabled for the ADC module to function. This is achieved by using the FNOSC<1:0> bits in the FOSCSEL Configuration register.
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FIGURE 16-1: ADC BLOCK DIAGRAM
Dedicated S&Hs
AN0
AN2
Data Format
12-word, 16-bit Registers
AN4 Bus Interface
10-Bit SAR AN6
Conversion Logic
DAC
Comparator
AVDD AVSS AN8
MUX / Sample / Sequence Control
Even numbered inputs without dedicated S&H
AN10
AN1
AN3
AN11
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REGISTER 16-1:
R/W-0 ADON bit 15 R/W-0 EIE bit 7 Legend: R = Readable bit -n = Value at POR bit 15 W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown R/W-0 ORDER R/W-0 SEQSAMP U-0 -- U-0 -- R/W-0 R/W-1 ADCS<2:0> bit 0
A/D CONTROL REGISTER (ADCON)
U-0 -- R/W-0 ADSIDL U-0 -- U-0 -- R/W-0 GSWTRG U-0 -- R/W-0 FORM bit 8 R/W-1
ADON: A/D Operating Mode bit 1 = A/D converter module is operating 0 = A/D converter is off Unimplemented: Read as `0' ADSIDL: Stop in Idle Mode bit 1 = Discontinue module operation when device enters Idle mode 0 = Continue module operation in Idle mode Unimplemented: Read as `0' GSWTRG: Global Software Trigger bit When this bit is set by the user, it will trigger conversions if selected by the TRGSRC<4:0> bits in the CPCx registers. This bit must be cleared by the user prior to initiating another global trigger (i.e., this bit is not auto-clearing). Unimplemented: Read as `0' FORM: Data Output Format bit 1 = Fractional (DOUT = dddd dddd dd00 0000) 0 = Integer (DOUT = 0000 00dd dddd dddd) EIE: Early Interrupt Enable bit 1 = Interrupt is generated after first conversion is completed 0 = Interrupt is generated after second conversion is completed Note: This control bit can only be changed while ADC is disabled (ADON = 0). ORDER: Conversion Order bit 1 = Odd numbered analog input is converted first, followed by conversion of even numbered input 0 = Even numbered analog input is converted first, followed by conversion of odd numbered input Note: This control bit can only be changed while ADC is disabled (ADON = 0). SEQSAMP: Sequential Sample Enable. 1 = Shared S&H is sampled at the start of the second conversion if ORDER = 0. If ORDER = 1, then the shared S&H is sampled at the start of the first conversion. 0 = Shared S&H is sampled at the same time the dedicated S&H is sampled if the shared S&H is not currently busy with an existing conversion process. If the shared S&H is busy at the time the dedicated S&H is sampled, then the shared S&H will sample at the start of the new conversion cycle Unimplemented: Read as `0' ADCS<2:0>: A/D Conversion Clock Select bits 111 = TQ*(ADCS<2:0> +1) = 8*TQ ***** 001 = TQ*(ADCS<2:0> +1) = 2*TQ 000 = TQ*(ADCS<2:0> +1) = 1*TQ Note: TQ = Period of System Clock @ 30 MIPS = 16.6 nsec (60 MHz)
bit 14 bit 13
bit 12-11 bit 10
bit 9 bit 8
bit 7
bit 6
bit 5
bit 4-3 bit 2-0
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REGISTER 16-2:
U-0 -- bit 15 U-0 -- bit 7 Legend: R = Readable bit -n = Value at POR C = Clear in software bit 15-6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 W = Writable bit `1' = Bit is set H-S = Set by hardware U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown U-0 -- R/C-0 H-S P5RDY R/C-0 H-S P4RDY R/C-0 H-S P3RDY R/C-0 H-S P2RDY R/C-0 H-S P1RDY
A/D STATUS REGISTER (ADSTAT)
U-0 -- U-0 -- U-0 -- U-0 -- U-0 -- U-0 -- U-0 -- bit 8 R/C-0 H-S P0RDY bit 0
Unimplemented: Read as `0' P5RDY: Conversion Data for Pair #5 Ready bit Bit set when data is ready in buffer, cleared when a `0' is written to this bit. P4RDY: Conversion Data for Pair #4 Ready bit Bit set when data is ready in buffer, cleared when a `0' is written to this bit. P3RDY: Conversion Data for Pair #3 Ready bit Bit set when data is ready in buffer, cleared when a `0' is written to this bit. P2RDY: Conversion Data for Pair #2 Ready bit Bit set when data is ready in buffer, cleared when a `0' is written to this bit. P1RDY: Conversion Data for Pair #1 Ready bit Bit set when data is ready in buffer, cleared when a `0' is written to this bit. P0RDY: Conversion Data for Pair #0 Ready bit Bit set when data is ready in buffer, cleared when a `0' is written to this bit.
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REGISTER 16-3:
R/W-0 bit 15 R/W-0 bit 7 Legend: R = Readable bit -n = Value at POR bit 15-1 W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown R/W-0 R/W-0 R/W-0 ADBASE<7:1> R/W-0 R/W-0 R/W-0 U-0 -- bit 0
A/D BASE REGISTER (ADBASE)(1)
R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 bit 8 ADBASE<15:8>
ADC Base Register: This register contains the base address of the user's ADC Interrupt Service Routine jump table. This register, when read, contains the sum of the ADBASE register contents and the encoded value of the PxRDY Status bits. The encoder logic provides the bit number of the highest priority PxRDY bits where P0RDY is the highest priority, and P5RDY is lowest priority. Note: The encoding results are shifted left two bits so bits 1-0 of the result are always zero. Unimplemented: Read as `0'
bit 0
Note 1: As an alternative to using the ADBASE register, the ADCP0-5 ADC pair conversion complete interrupts (Interrupts 37-42) can be used to invoke A to D conversion completion routines for individual ADC input pairs. Refer to Section 16.9 "Individual Pair Interrupts".
REGISTER 16-4:
U-0 -- bit 15 R/W-0 PCFG7 bit 7 Legend: R = Readable bit -n = Value at POR bit 15-12 bit 11-0
A/D PORT CONFIGURATION REGISTER (ADPCFG)
U-0 -- U-0 -- U-0 -- R/W-0 PCFG11 R/W-0 PCFG10 R/W-0 PCFG9 R/W-0 PCFG8 bit 8 R/W-0 R/W-0 PCFG5 R/W-0 PCFG4 R/W-0 PCFG3 R/W-0 PCFG2 R/W-0 PCFG1 R/W-0 PCFG0 bit 0
PCFG6
W = Writable bit `1' = Bit is set
U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown
Unimplemented: Read as `0' PCFG<11:0>: A/D Port Configuration Control bits 1 = Port pin in Digital mode, port read input enabled, A/D input multiplexor connected to AVSS 0 = Port pin in Analog mode, port read input disabled, A/D samples pin voltage
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REGISTER 16-5:
R/W-0 IRQEN1 bit 15 R/W-0 IRQEN0 bit 7 Legend: R = Readable bit -n = Value at POR bit 15 W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown R/W-0 PEND0 R/W-0 SWTRG0 R/W-0 R/W-0 R/W-0 TRGSRC0<5:0> bit 0 R/W-0
A/D CONVERT PAIR CONTROL REGISTER #0 (ADCPC0)
R/W-0 R/W-0 SWTRG1 R/W-0 R/W-0 R/W-0 TRGSRC1<5:0> bit 8 R/W-0 R/W-0 R/W-0
PEND1
IRQEN1: Interrupt Request Enable 1 bit 1 = Enable IRQ generation when requested conversion of channels AN3 and AN2 is completed 0 = IRQ is not generated PEND1: Pending Conversion Status 1 bit 1 = Conversion of channels AN3 and AN2 is pending. Set when selected trigger is asserted 0 = Conversion is complete SWTRG1: Software Trigger 1 bit 1 = Start conversion of AN3 and AN2 (if selected in TRGSRC bits). If other conversions are in progress, then conversion will be performed when the conversion resources are available. This bit will be reset when the PEND bit is set. TRGSRC1<5:0>: Trigger 1 Source Selection bits Selects trigger source for conversion of analog channels AN3 and AN2. 00000 = No conversion enabled 00001 = Individual software trigger selected 00010 = Global software trigger selected 00011 = PWM Special Event Trigger selected 00100 = PWM generator #1 trigger selected 00101 = PWM generator #2 trigger selected 00110 = PWM generator #3 trigger selected 00111 = PWM generator #4 trigger selected 01100 = Timer #1 period match 01101 = Timer #2 period match 01110 = PWM GEN #1 current-limit ADC trigger 01111 = PWM GEN #2 current-limit ADC trigger 10000 = PWM GEN #3 current-limit ADC trigger 10001 = PWM GEN #4 current-limit ADC trigger 10110 = PWM GEN #1 fault ADC trigger 10111 = PWM GEN #2 fault ADC trigger 11000 = PWM GEN #3 fault ADC trigger 11001 = PWM GEN #4 fault ADC trigger IRQEN0: Interrupt Request Enable 0 bit 1 = Enable IRQ generation when requested conversion of channels AN1 and AN0 is completed 0 = IRQ is not generated PEND0: Pending Conversion Status 0 bit 1 = Conversion of channels AN1 and AN0 is pending. Set when selected trigger is asserted. 0 = Conversion is complete SWTRG0: Software Trigger 0 bit 1 = Start conversion of AN1 and AN0 (if selected by TRGSRC bits). If other conversions are in progress, then conversion will be performed when the conversion resources are available. This bit will be reset when the PEND bit is set
bit 14
bit 13
bit 12-8
bit 7
bit 6
bit 5
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REGISTER 16-5:
bit 4-0
A/D CONVERT PAIR CONTROL REGISTER #0 (ADCPC0) (CONTINUED)
TRGSRC0<5:0>: Trigger 0 Source Selection bits Selects trigger source for conversion of analog channels AN1 and AN0. 00000 = No conversion enabled 00001 = Individual software trigger selected 00010 = Global software trigger selected 00011 = PWM Special Event Trigger selected 00100 = PWM generator #1 trigger selected 00101 = PWM generator #2 trigger selected 00110 = PWM generator #3 trigger selected 00111 = PWM generator #4 trigger selected 01100 = Timer #1 period match 01101 = Timer #2 period match 01110 = PWM GEN #1 current-limit ADC trigger 01111 = PWM GEN #2 current-limit ADC trigger 10000 = PWM GEN #3 current-limit ADC trigger 10001 = PWM GEN #4 current-limit ADC trigger 10110 = PWM GEN #1 fault ADC trigger 10111 = PWM GEN #2 fault ADC trigger 11000 = PWM GEN #3 fault ADC trigger 11001 = PWM GEN #4 fault ADC trigger
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REGISTER 16-6:
R/W-0 IRQEN3 bit 15 R/W-0 IRQEN2 bit 7 Legend: R = Readable bit -n = Value at POR bit 15 W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown R/W-0 PEND2 R/W-0 SWTRG2 R/W-0 R/W-0 R/W-0 TRGSRC2<5:0> bit 0 R/W-0
A/D CONVERT PAIR CONTROL REGISTER #1 (ADCPC1)
R/W-0 R/W-0 SWTRG3 R/W-0 R/W-0 R/W-0 TRGSRC3<5:0> bit 8 R/W-0 R/W-0 R/W-0
PEND3
IRQEN3: Interrupt Request Enable 3 bit 1 = Enable IRQ generation when requested conversion of channels AN7 and AN6 is completed. 0 = IRQ is not generated PEND3: Pending Conversion Status 3 bit 1 = Conversion of channels AN7 and AN6 is pending. Set when selected trigger is asserted. 0 = Conversion is complete SWTRG3: Software Trigger 3 bit 1 = Start conversion of AN7 and AN6 (if selected by TRGSRC bits). If other conversions are in progress, then conversion will be performed when the conversion resources are available. This bit will be reset when the PEND bit is set. TRGSRC3<5:0>: Trigger 3 Source Selection bits Selects trigger source for conversion of analog channels A7 and A6. 00000 = No conversion enabled 00001 = Individual software trigger selected 00010 = Global software trigger selected 00011 = PWM Special Event Trigger selected 00100 = PWM generator #1 trigger selected 00101 = PWM generator #2 trigger selected 00110 = PWM generator #3 trigger selected 00111 = PWM generator #4 trigger selected 01100 = Timer #1 period match 01101 = Timer #2 period match 01110 = PWM GEN #1 current-limit ADC trigger 01111 = PWM GEN #2 current-limit ADC trigger 10000 = PWM GEN #3 current-limit ADC trigger 10001 = PWM GEN #4 current-limit ADC trigger 10110 = PWM GEN #1 fault ADC trigger 10111 = PWM GEN #2 fault ADC trigger 11000 = PWM GEN #3 fault ADC trigger 11001 = PWM GEN #4 fault ADC trigger IRQEN2: Interrupt Request Enable 2 bit 1 = Enable IRQ generation when requested conversion of channels AN5 and AN4 is completed 0 = IRQ is not generated PEND2: Pending Conversion Status 2 bit 1 = Conversion of channels AN5 and AN4 is pending. Set when selected trigger is asserted 0 = Conversion is complete SWTRG2: Software Trigger 2 bit 1 = Start conversion of AN5 and AN4 (if selected by TRGSRC bits). If other conversions are in progress, then conversion will be performed when the conversion resources are available. This bit will be reset when the PEND bit is set
bit 14
bit 13
bit 12-8
bit 7
bit 6
bit 5
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REGISTER 16-6:
bit 3-0
A/D CONVERT PAIR CONTROL REGISTER #1 (ADCPC1) (CONTINUED)
TRGSRC2<5:0>: Trigger 2 Source Selection bits Selects trigger source for conversion of analog channels: AN5 and AN4 00000 = No conversion enabled 00001 = Individual software trigger selected 00010 = Global software trigger selected 00011 = PWM Special Event Trigger selected 00100 = PWM generator #1 trigger selected 00101 = PWM generator #2 trigger selected 00110 = PWM generator #3 trigger selected 00111 = PWM generator #4 trigger selected 01100 = Timer #1 period match 01101 = Timer #2 period match 01110 = PWM GEN #1 current-limit ADC trigger 01111 = PWM GEN #2 current-limit ADC trigger 10000 = PWM GEN #3 current-limit ADC trigger 10001 = PWM GEN #4 current-limit ADC trigger 10110 = PWM GEN #1 fault ADC trigger 10111 = PWM GEN #2 fault ADC trigger 11000 = PWM GEN #3 fault ADC trigger 11001 = PWM GEN #4 fault ADC trigger
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REGISTER 16-7:
R/W-0 IRQEN5 bit 15 R/W-0 IRQEN4 bit 7 Legend: R = Readable bit -n = Value at POR
.
A/D CONVERT PAIR CONTROL REGISTER #2 (ADCPC2)
R/W-0 R/W-0 SWTRG5 R/W-0 R/W-0 R/W-0 TRGSRC5<5:0> bit 8 R/W-0 R/W-0 SWTRG4 R/W-0 R/W-0 R/W-0 TRGSRC4<5:0> bit 0 R/W-0 R/W-0 R/W-0 R/W-0
PEND5
PEND4
W = Writable bit `1' = Bit is set
U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown
bit 15
IRQEN5: Interrupt Request Enable 5 bit 1 = Enable IRQ generation when requested conversion of channels AN11 and AN10 is completed 0 = IRQ is not generated PEND5: Pending Conversion Status 5 bit 1 = Conversion of channels AN11 and AN10 is pending. Set when selected trigger is asserted 0 = Conversion is complete SWTRG5: Software Trigger 5 bit 1 = Start conversion of AN11 and AN10 (if selected by TRGSRC bits). If other conversions are in progress, then conversion will be performed when the conversion resources are available. This bit will be reset when the PEND bit is set. TRGSRC5<5:0>: Trigger Source Selection 5 bits Selects trigger source for conversion of analog channels A11 and A10. 00000 = No conversion enabled 00001 = Individual software trigger selected 00010 = Global software trigger selected 00011 = PWM Special Event Trigger selected 00100 = PWM generator #1 trigger selected 00101 = PWM generator #2 trigger selected 00110 = PWM generator #3 trigger selected 00111 = PWM generator #4 trigger selected 01100 = Timer #1 period match 01101 = Timer #2 period match 01110 = PWM GEN #1 current-limit ADC trigger 01111 = PWM GEN #2 current-limit ADC trigger 10000 = PWM GEN #3 current-limit ADC trigger 10001 = PWM GEN #4 current-limit ADC trigger 10110 = PWM GEN #1 fault ADC trigger 10111 = PWM GEN #2 fault ADC trigger 11000 = PWM GEN #3 fault ADC trigger 11001 = PWM GEN #4 fault ADC trigger IRQEN4: Interrupt Request Enable 4 bit 1 = Enable IRQ generation when requested conversion of channels AN9 and AN8 is completed 0 = IRQ is not generated PEND4: Pending Conversion Status 4 bit 1 = Conversion of channels AN9 and AN8 is pending. Set when selected trigger is asserted. 0 = Conversion is complete SWTRG4: Software Trigger 4 bit 1 = Start conversion of AN9 and AN8 (if selected by TRGSRC bits). If other conversions are in progress, then conversion will be performed when the conversion resources are available. This bit will be reset when the PEND bit is set.
bit 14
bit 13
bit 11-8
bit 7
bit 6
bit 5
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REGISTER 16-7:
bit 4-0
A/D CONVERT PAIR CONTROL REGISTER #2 (ADCPC2) (CONTINUED)
TRGSRC4<5:0>: Trigger Source Selection 4 bits Selects trigger source for conversion of analog channels: AN9 and AN8 00000 = No conversion enabled 00001 = Individual software trigger selected 00010 = Global software trigger selected 00011 = PWM Special Event Trigger selected 00100 = PWM generator #1 trigger selected 00101 = PWM generator #2 trigger selected 00110 = PWM generator #3 trigger selected 00111 = PWM generator #4 trigger selected 01100 = Timer #1 period match 01101 = Timer #2 period match 01110 = PWM GEN #1 current-limit ADC trigger 01111 = PWM GEN #2 current-limit ADC trigger 10000 = PWM GEN #3 current-limit ADC trigger 10001 = PWM GEN #4 current-limit ADC trigger 10110 = PWM GEN #1 fault ADC trigger 10111 = PWM GEN #2 fault ADC trigger 11000 = PWM GEN #3 fault ADC trigger 11001 = PWM GEN #4 fault ADC trigger
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16.4 ADC Result Buffer 16.5 Application Information
The ADC module contains up to 12 data output registers to store the A/D results called ADBUF<11:0>. The registers are 10 bits wide, but are read into different format, 16-bit words. The buffers are read-only. Each analog input has a corresponding data output register. This module DOES NOT include a circular data buffer or FIFO. Because the conversion results may be produced in any order, such schemes will not work since there would be no means to determine which data is in a specific location. The SAR write to the buffers is synchronous to the ADC clock. Reads from the buffers will always have valid data assuming that the data-ready interrupt has been processed. If a buffer location has not been read by the software and the SAR needs to overwrite that location, the previous data is lost. Reads from the result buffer pass through the data formatter. The 10 bits of the result data are formatted into a 16-bit word. The ADC module implements a concept based on "Conversion Pairs". In power conversion applications, there is a need to measure voltages and currents for each PWM control loop. The ADC module enables the sample and conversion process of each conversion pair to be precisely timed relative to the PWM signals. In a user's application circuit, the PWM signal enables a transistor, which allows an inductor to charge up with current to a desired value. The longer a PWM signal is on, the longer the inductor is charging, and therefore the inductor current is at its maximum at the end of the PWM signal. Often, this is the point where the user wants to take the current and voltage measurements. Figure 16-2 shows a typical power conversion application (a boost converter) where the current sensing of the inductor is done by monitoring the voltage across a resistor in series with the power transistor that "charges" the inductor. The significant feature of this figure is that if the sampling of the resistor voltage occurs slightly later than the desired sample point, the data read will be zero. This is not acceptable in most applications. The ADC module always samples the analog voltages at the appointed time regardless of whether the ADC converter is busy or not. The Power Supply PWM module supports 2-4 independent PWM channels as well as 2-4 trigger signals (one per PWM generator). The user can configure these channels to initiate an ADC conversion of a selected input pair at the proper time in the PWM cycle. The Power Supply PWM module also provides an additional trigger signal (Special Event Trigger), which can be programmed to occur at a specified time during the primary time base count cycle.
FIGURE 16-2:
APPLICATION EXAMPLE: IMPORTANCE OF PRECISE SAMPLING
Example Boost Converter
Critical Edge
PWM IL Desired sample point
X
IL +VIN L VOUT
X
IR
X
Late sample yields zero data
PWM + COUT
VISENSE Measuring peak inductor current is very important
R
IR
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16.6 Reverse Conversion Order 16.8 Group Interrupt Generation
The ORDER control bit in the ADCON register, when set, reverses the order of the input pair conversion process. Normally (ORDER = 0), the even numbered input of an input pair is converted first, and then the odd numbered input is converted. If ORDER = 1, the odd numbered input pin of an input pair is converted first, followed by the even numbered pin. This feature is useful when using voltage control modes and using the early interrupt capability (EIE = 1). These features enable the user to minimize the time period from actual acquisition of the feedback (ADC) data to the update of the control output (PWM). This time from input to output of the control system determines the overall stability of the control system. The ADC module provides a common or "Group" interrupt request that is the OR of all of the enabled interrupt sources within the module. Each CPC register has two IRQENx bits, one for each analog input pair. If the IRQEN bit is set, an interrupt request is made to the interrupt controller when the requested conversion is completed. When an interrupt is generated, an associated PxRDY bit in the ADSTAT register is set. The PxRDY bit is cleared by the user. The user's software can examine the ADSTAT register's PxRDY bits to determine if additional requested conversions have been completed. The group interrupt is useful for applications that use a common software routine to process ADC interrupts for multiple analog input pairs. This method is more traditional in concept. Note: The user must clear the IFS bit associated with the ADC in the interrupt controller before the PxRDY bit is cleared. Failure to do so may cause interrupts to be lost. The reason is that the ADC will possibly have another interrupt pending. If the user clears the PxRDY bit first, the ADC may generate another interrupt request, but if the user then clears the IFS bit, the interrupt request will be erased.
16.7
Simultaneous & Sequential Sampling in a pair
The inputs that have dedicated Sample and Hold (S&H) circuits are sampled when their specified trigger events occur. The inputs that share the common sample and hold circuit are sampled in the following manner: 1. If the SEQSAMP bit = 0, and the common (shared) sample and hold circuit is NOT busy, then the shared S&H will sample their specified input at the same time as the dedicated S&H. This action provides "Simultaneous" sample and hold functionality. If the SEQSAMP bit = 0, and the shared S&H is currently busy with a conversion in progress, then the shared S&H will sample as soon as possible (at the start of the new conversion process for the pair). If the SEQSAMP bit = 1, then the shared S&H will sample at the start of the conversion process for that input. For example: If the ORDER bit = 0 the shared S&H will sample at the start of the conversion of the second input. If ORDER = 1, then the shared S&H will sample at the start of the conversion for the first input. The SEQSAMP bit is useful for some applications that want to minimize the time from a sample event to the conversion of the sample. When SEQSAMP = 0, the logic attempts to take the samples for both inputs of a pair at the same time if the resources are available. The user can often ensure that the ADC will not be busy with a prior conversion by controlling the timing of the trigger signals that initiate the conversion processes.
2.
3.
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16.9 Individual Pair Interrupts 16.11 Conflict Resolution
If more than one conversion pair request is active at the same time, the ADC control logic processes the requests in a top-down manner, starting at analog pair #0 (AN1/AN0) and ending at analog pair #5 (AN11/ AN10). This is not a "round-robin" process. The ADC module also provides individual interrupts outputs for each analog input pair. These interrupts are always enabled within the module. The pair interrupts can be individually enabled or disabled via the associated Interrupt Enable bits in the IEC registers. Using the group interrupts may require the interrupt service routine to determine which interrupt source generated the interrupt. For applications that use separate software tasks to process ADC data, a common interrupt vector can cause performance bottlenecks. The use of the individual pair interrupts can save many clock cycles as compared to using the group interrupt to process multiple interrupt sources. The individual pair interrupts support the construction of application software that is responsive and organized on a task basis. Regardless of whether an individual pair interrupt or the global interrupt are used to respond to an interrupt request from an ADC conversion, the PxRDY bits in the ADSTAT register function in the same manner. The use of the individual pair interrupts also enables the user to change the interrupt priority of individual ADC channels (pairs) as compared to the fixed priority structure of the group interrupt. NOTE: The use of individual interrupts DOES NOT affect the priority structure of the ADC with respect to the order of input pair conversion. The use of individual interrupts can reduce the problem of accidently "losing" a pending interrupt while processing and clearing a current interrupt
16.12 Deliberate Conflicts
If the user specifies the same conversion trigger source for multiple "conversion pairs", then the ADC module functions like other dsPIC30F ADC modules; i.e., it processes the requested conversions sequentially (in pairs) until the sequence has been completed. Note: The ADC module will NOT repeatedly loop once triggered. Each sequence of conversions requires a trigger or multiple triggers.
16.13 ADC Clock Selection
The ADCS<2:0> bits in the ADCON register specify the clock divisor value for the ADC clock generation logic. The input to the ADC clock divisor is the system clock (240 MHz @ 30 MIPS) when the PLL is operating. This high-frequency clock provides the needed timing resolution to generate a 24 MHz ADC clock signal required to process two ADC conversions in 1 microsecond.
16.10 Early Interrupt Generation
The EIE control bit in the ADCON register enables the generation of the interrupts after completion of the first conversion instead of waiting for the completion of both inputs of an input pair. Even though the second input will still be in the conversion process, the software can be written to perform some of the computations using the first data value while the second conversion is completed. The user software can be written to account for the 500 nsec conversion period of the second input before using the second data, or the user can poll the PEND bit in the CPCx register. The PEND bit remains set until both conversions of a pair have been completed. The PXRDY bit for the associated interrupt is set in the ADSTAT register at the completion of the first conversion, and remains set until it is cleared by the user.
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16.14 ADC Base Register
It is expected that the user application may have the ADC module generate 500,000 interrupts per second. To speed the evaluation of the PxRDY bits in the ADSTAT register, the ADC module features the read/ write register: ADBASE. When read, the ADBASE register will provide a sum of the contents of the ADBASE register plus an encoding of the PxRDY bits set in the ADSTAT register. The Least Significant bit of the ADBASE register is forced to zero. This ensures that all (ADBASE + PxRDY) results will be on instruction boundaries. The PxRDY bits are binary priority encoded with P0RDY being the highest priority, and P5RDY being the lowest priority. The encoded priority result is then shifted left two bit positions and added to the contents of the ADBASE register. This means the priority encoding yields addresses that are on two instruction word boundaries. The user will typically load the ADBASE register with the base address of a "Jump" table that contains either the addresses of the appropriate ISRs or branches to the appropriate ISR. The encoded PxRDY values are set up to reserve two instruction words per entry in the Jump table. It is expected that the user software will use one instruction word to load an identifier into a W register, and the other instruction will be a branch to the appropriate ISR.
16.16 Sample and Conversion
The ADC module always assigns two ADC clock periods for the sampling process. When operating at the maximum conversion rate of 2 Msps per channel, the sampling period is: 2 x 41.6 nsec = 83.3 nsec. Each ADC pair specified in the CPCx registers initiates a sample operation when the selected trigger event occurs. The conversion of the sampled analog data occurs as resources become available. If a new trigger event occurs for a specific channel before a previous sample and convert request for that channel has been processed, the newer request is ignored. It is the user's responsibility not to exceed the conversion rate capability for the module. The actual conversion process requires 10 additional ADC clocks. The conversion is processed serially, bit 9 first, then bit 8, down to bit 0. The result is stored when the conversion is completed.
16.17 A/D Sample and Convert Timing
The sample and hold circuits assigned to the input pins have their own timing logic that is triggered when an external sample and convert request (from PWM or TMR) is made. The sample and hold circuits have a fixed two clock data sample period. When the sample has been acquired, then the ADC control logic is notified of a pending request, then the conversion is performed as the conversion resources become available. The ADC module always converts pairs of analog input channels, so a typical conversion process requires 24 clock cycles.
16.15 Changing A/D Clock
In general, the A/D cannot accept changes to the ADC clock divisor while ADON = 1. If the user makes A/D clock changes while ADON = 1, the results will be indeterminate.
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FIGURE 16-3:
adc_clk sample_even sample_odd
DETAILED CONVERSION SEQUENCE TIMINGS, SEQSAMP = 0, NOT BUSY
TAD
connect_first
connect_second
convert_en
10th 9th 8th
7th
6th
5th
4th
3rd
2nd 1st
10th 9th
8th
7th
6th
5th
4th
3rd
2nd 1st
capture_first_data capture_second_data
state counter
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 0 1 2
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FIGURE 16-4:
adc_clk
DETAILED CONVERSION SEQUENCE TIMINGS, SEQSAMP = 1
TAD
sample_even sample_odd(1)
sample_odd(2) connectx_en
connect_second connect_common convert_en Dependent on S&H availability
10th 9th 8th
7th
6th
5th
4th
3rd
2nd 1st
10th 9th 8th
7th
6th
5th
4th
3rd
2nd 1st
capture_first_data capture_second_data
state counter
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 0
Note 1:
For all analog input pairs that do not have dedicated sample and hold circuits, the common sample and hold circuit samples the input at the start of the first and second conversions. Therefore, the samples are sequential, not simultaneous. For all analog input pairs that have dedicated sample and hold circuits, the common sample and hold circuit samples the input at the start of the first conversion so that both samples (odd and even) are near simultaneous.
2:
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16.18 Module Power-Down Modes
The module has two internal power modes. When the ADON bit is `1', the module is in Active mode and is fully powered and functional. When ADON is `0', the module is in Off mode. The state machine for the module is reset, as are all of the pending conversion requests. To return to the Active mode from Off mode, the user must wait for the bias generators to stabilize. The stabilization time is specified in the electrical specs.
16.20 Configuring Analog Port Pins
The use of the ADPCFG and TRIS registers control the operation of the A/D port pins. The port pins that are desired as analog inputs should have their corresponding TRIS bit set (input). If the TRIS bit is cleared (output), the digital output level (VOH or VOL) will be converted. Port pins that are desired as analog inputs must have the corresponding ADPCFG bit clear. This will configure the port to disable the digital input buffer. Analog levels on pins where ADPCFG = 1, may cause the digital input buffer to consume excessive current. If a pin is not configured as an analog input ADPCFG = 1, the analog input is forced to AVss and conversions of that input do not yield meaningful results. When reading the PORT register, all pins configured as analog input ADPCFG = 0, will read `0'. The A/D operation is independent of the state of the input selection bits and the TRIS bits. Some devices may have analog inputs multiplexed with A/D voltage reference inputs VREF- and VREF+. This does not affect the functionality of these pins. The user may still specify those pins as analog inputs and convert them, the results will either be 0x000 or 0xFFF.
16.19 Effects of a Reset
A device reset forces all registers to their reset state. This forces the A/D module to be turned off, and any conversion and sampling sequence is aborted. The value that is in the ADBUFx register is not modified. The ADBUFx registers contain unknown data after a Power-on Reset.
16.21 Output Formats
The A/D converts 10 bits. The data buffer RAM is 16 bits wide. The ADC data can be read in one of two different formats, as shown in Figure 16-5. The FORM bit selects the format. Each of the output formats translates to a 16-bit result on the data bus.
FIGURE 16-5:
A/D OUTPUT DATA FORMAT
RAM contents:
d09 d08 d07 d06 d05 d04 d03 d02 d01
d00
Read to Bus: Fractional d09 d08 d07 d06 d05 d04 d03 d02 d01 d00 0 0 0 0 0 0
Integer
0
0
0
0
0
0
d09 d08 d07 d06 d05 d04 d03 d02 d01
d00
DS70178A-page 182
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TABLE 16-8:
Bit 13 ADSIDL -- -- -- ADBASE<15:1> SWTRG1 SWTRG3 SWTRG5 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ADC Data Buffer 3 ADC Data Buffer 4 ADC Data Buffer 5 ADC Data Buffer 6 ADC Data Buffer 7 ADC Data Buffer 8 ADC Data Buffer 9 ADC Data Buffer 10 ADC Data Buffer 11 -- -- -- -- -- -- -- -- -- ADC Data Buffer 2 -- -- -- ADC Data Buffer 1 -- -- -- ADC Data Buffer 0 -- -- -- -- -- -- -- -- -- -- -- TRGSRC5<5:0> IRQEN4 PEND4 SWTRG4 TRGSRC3<5:0> IRQEN2 PEND2 SWTRG2 TRGSRC2<5:0> TRGSRC4<5:0> -- -- TRGSRC1<5:0> IRQEN0 PEND0 SWTRG0 TRGSRC0<5:0> -- -- -- -- -- -- -- P5RDY P4RDY P3RDY P2RDY P1RDY -- -- -- -- -- -- -- -- -- -- -- -- -- P0RDY -- -- PCFG11 PCFG10 PCFG9 PCFG8 PCFG7 PCFG6 PCFG5 PCFG4 PCFG3 PCFG2 PCFG1 PCFG0 -- -- GSWTRG -- FORM EIE ORDER SEQSAMP -- -- ADCS<2:0> Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 -- -- -- -- 0009 0000 0000 0000 0000 0000 0000 0000 0000 xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx 0000
ADC REGISTER MAP
All Resets
File Name ADCON
ADR
Bit 15
Bit 14
0300
ADON
ADPCFG1
0302
--
Reserved
0304
--
ADSTAT
0306
--
ADBASE
0308
ADCPC0
030A
IRQEN1
PEND1
ADCPC1
030C
IRQEN3
PEND3
(c) 2006 Microchip Technology Inc.
-- -- -- -- -- -- -- -- -- -- -- -- -- --
ADCPC2
030E
IRQEN5
PEND5
Reserved
0310 - 031E
---
ADCBUF0
0320
--
ADCBUF1
0322
--
ADCBUF2
0324
--
ADCBUF3
0326
--
ADCBUF4
0328
--
ADCBUF5
032A
--
ADCBUF6
032C
--
ADCBUF7
032E
--
ADCBUF8
0330
--
ADCBUF9
0332
--
ADCBUF10
0334
--
ADCBUF11
0336
--
Advance Information
Reserved
0338 - 037E
--
dsPIC30F1010/202X
DS70178A-page 183
dsPIC30F1010/202X
NOTES:
DS70178A-page 184
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dsPIC30F1010/202X
17.0 SMPS COMPARATOR MODULE
Note: This data sheet summarizes features of this group of dsPIC30F devices and is not intended to be a complete reference source. For more information on the CPU, peripherals, register descriptions and general device functionality, refer to the "dsPIC30F Family Reference Manual" (DS70046).
The dsPIC30F SMPS Comparator module monitors current and/or voltage transients that may be too fast for the CPU and ADC to capture.
17.1
Features Overview
* 16 comparator inputs * 10-bit DAC provides reference
Programmable output polarity Interrupt generation capability Selectable Input sources DAC has three ranges of operation - AVDD / 2 - Internal Reference 1.2V 1% - External Reference < (AVDD - 1.6V) * ADC sample and convert trigger capability * Can be disabled to reduce power consumption * Functional support for PWM Module: - PWM Duty Cycle Control - PWM Period Control - PWM Fault Detect
* * * *
FIGURE 17-1:
CMPxA* CMPxB* CMPxC* CMPxD* M U X
COMPARATOR MODULE BLOCK DIAGRAM
INSEL<1:0> Trigger to PWM Status
CMPx* * x=1, 2, 3 & 4 RANGE AVDD/2 M VREF U X AVSS CMPPOL
0 Glitch Filter 1 Pulse Generator
DAC 10 CMREF
Interrupt Request
EXTREF
17.2
Module Applications
This module provides a means for the SMPS dsPIC DSC devices to monitor voltage and currents in a power conversion application. The ability to detect transient conditions and stimulate the dsPIC DSC processor and/or peripherals without requiring the processor and ADC to constantly monitor voltages or currents frees the dsPIC DSC to perform other tasks. The Comparator module has a high-speed comparator and an associated 10-bit DAC that provides a programmable reference voltage to one input of the comparator. The polarity of the comparator output is user programmable. The output of the module can be used in the following modes: * Generate an interrupt * Trigger an ADC sample and convert process * Truncate the PWM signal (current limit)
* Truncate the PWM period (current minimum) * Disable the PWM outputs (Fault-latch) The output of the Comparator module may be used in multiple modes at the same time, such as: (1) generate an interrupt, (2) have the ADC take a sample and convert it and (3) truncate the PWM output in response to a voltage being detected beyond its expected value. The Comparator module can also be used to wake-up the system from Sleep or Idle mode when the analog input voltage exceeds the programmed threshold voltage.
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dsPIC30F1010/202X
17.3 Module Description 17.7 Comparator Input Range
The Comparator module uses a 20 nsec comparator. The comparator offset is 5 mV typical. The negative input of the comparator is always connected to the DAC circuit. The positive input of the comparator is connected to an analog multiplexer that selects the desired source pin. The comparator has a limitation for the input Common Mode Range (CMR) of about 3.5 volts (AVDD - 1.5 volts). This means that both inputs should not exceed this value or the comparator's output will become indeterminent. As long as one of the inputs is within the Common Mode Range, the comparator output will be correct. An input excursion into the CMR region will not corrupt the comparator output, but the comparator input is saturated.
17.4
DAC
The range of the DAC is controlled via an analog multiplexer that selects either AVDD / 2, internal 1.2V 1% reference, or an external reference source EXTREF. The full range of the DAC (AVDD / 2) will typically be used when the chosen input source pin is shared with the ADC. The reduced range option (VREF) will likely be used when monitoring current levels via a CLx pin using a current sense resistor. Usually, the measured voltages in such applications are small (<1.25V), therefore the option of using a reduced reference range for the comparator extends the available DAC resolution in these applications. The use of an external reference enables the user to connect to a reference that better suits their application.
17.8
DAC Output Range
The DAC has a limitation for the maximum reference voltage input of (AVDD - 1.6) volts. An external reference voltage input should not exceed this value or the reference DAC output will become indeterminate.
17.9
Comparator Registers
The Comparator module is controlled by the following registers: * Comparator Control Registerx (CMPCONx) * Comparator DAC Control Registerx (CMPDACx)
17.5
Interaction with I/O Buffers
If the comparator module is enabled and a pin has been selected as the source for the comparator, then the chosen I/O pad must disable the digital input buffer associated with the pad to prevent excessive currents in the digital buffer due to analog input voltages.
17.6
Digital Logic
The CMPCONx register (see Register 17-1) provides the control logic that configures the Comparator module. The digital logic provides a glitch filter for the comparator output to mask transient signals less than two TCY (66 nsec) in duration. In Sleep or Idle mode, the glitch filter is bypassed to enable an asynchronous path from the comparator to the interrupt controller. This asynchronous path can be used to wake-up the processor from Sleep or Idle mode. The comparator can be disabled while in Idle mode if the CMPSIDL bit is set. If a device has multiple comparators, if any CMPSIDL bit is set, then the entire group of comparators will be disabled while in Idle mode. This behavior reduces complexity in the design of the clock control logic for this module. The digital logic also provides a one TCY width pulse generator for triggering the ADC and generating interrupt requests. The CMPDACx (see Register 17-2) register provides the digital input value to the reference DAC. If the module is disabled, the DAC and comparator are disabled to reduce power consumption.
DS70178A-page 186
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dsPIC30F1010/202X
REGISTER 17-1:
R/W-0 CMPON bit 15 R/W-0 bit 7 Legend: R = Readable bit -n = Value at POR bit 15 W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown R/W-0 R/W-0 EXTREF U-0 -- R/W-0 CMPSTAT U-0 -- R/W-0 CMPPOL
COMPARATOR CONTROL REGISTERX (CMPCONx)
U-0 -- R/W-0 CMPSIDL U-0 -- U-0 -- U-0 -- U-0 -- U-0 -- bit 8 R/W-0 RANGE bit 0
INSEL<1:0>
CMPON: A/D Operating Mode bit 1 = Comparator module is enabled 0 = Comparator module is disabled (reduces power consumption) Unimplemented: Read as `0' CMPSIDL: Stop in Idle Mode bit 1 = Discontinue module operation when device enters Idle mode. 0 = Continue module operation in Idle mode. If a device has multiple comparators, any CMPSIDL bit set to `1' disables ALL comparators while in Idle mode.
bit 14 bit 13
bit 12-8 bit 7-6
Reserved: Read as `0' INSEL<1:0>: Input Source Select for Comparator bits 00 = Select CMPxA input pin 01 = Select CMPxB input pin 10 = Select CMPxC input pin 11 = Select CMPxD input pin EXTREF: Enable External Reference bit 1 = External source provides reference to DAC 0 = Internal reference sources provide source to DAC Reserved: Read as `0' CMPSTAT: Current State of Comparator Output Including CMPPOL Selection bit Reserved: Read as `0' CMPPOL: Comparator Output Polarity Control bit 1 = Output is inverted 0 = Output is non inverted RANGE: Selects DAC Output Voltage Range bit 2.5V @ 5 volt VDD 1 = High Range: Max DAC value = AVDD / 2, 0 = Low Range: Max DAC value = Internal Reference, 1.2V +-1%
bit 5
bit 4 bit 3 bit 2 bit 1
bit 0
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dsPIC30F1010/202X
REGISTER 17-2:
U-0 -- bit 15 R/W-0 bit 7 Legend: R = Readable bit -n = Value at POR bit 15-10 bit 9-0 W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
COMPARATOR DAC CONTROL REGISTERX (CMPDACx)
U-0 -- U-0 -- U-0 -- U-0 -- U-0 -- R/W-0 R/W-0 bit 8 R/W-0 bit 0 CMREF<9:8>
CMREF<7:0>
Reserved: Read as `0' These bits are reserved for possible future expansion of the DAC from 10 bits to more bits. CMREF<9:0>: Comparator Reference Voltage Select bits 1111111111 = (CMREF * VREF / 1024) or (CMREF * AVDD / 1024) volts depending on Range bit ***** 0000000000 = 0.0 volts
DS70178A-page 188
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TABLE 17-3:
Bit 14 -- -- -- -- -- -- -- -- -- -- -- -- CMREF<9:0> CMPSIDL -- -- -- -- -- -- INSEL<1:0> EXTREF CMPSTAT -- -- -- -- -- CMREF<9:0> CMPPOL RANGE CMPSIDL -- -- -- -- -- -- -- INSEL<1:0> EXTREF CMPSTAT -- -- -- -- CMREF<9:0> CMPPOL RANGE CMPSIDL -- -- -- -- -- -- -- INSEL<1:0> EXTREF CMPSTAT CMPPOL -- -- -- -- CMREF<9:0> RANGE CMPSIDL -- -- -- -- -- -- -- INSEL<1:0> EXTREF CMPSTAT CMPPOL RANGE Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
ANALOG COMPARATOR CONTROL REGISTER MAP
All Resets 0000 0000 0000 0000 0000 0000 0000 0000
File Name
ADR
Bit 15
CMPCON1
04C0
CMPON
CMPDAC1
04C2
--
CMPCON2
04C4
CMPON
CMPDAC2
04C6
--
CMPCON3
04C8
CMPON
CMPDAC3
04CA
--
(c) 2006 Microchip Technology Inc.
CMPCON4
04CC
CMPON
CMPDAC4
04CE
--
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dsPIC30F1010/202X
DS70178A-page 189
dsPIC30F1010/202X
NOTES:
DS70178A-page 190
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dsPIC30F1010/202X
18.0 SYSTEM INTEGRATION
18.1 Oscillator System Overview
Note: This data sheet summarizes features of this group of dsPIC30F devices and is not intended to be a complete reference source. For more information on the CPU, peripherals, register descriptions and general device functionality, refer to the "dsPIC30F Family Reference Manual" (DS70046). For more information on the device instruction set and programming, refer to the "dsPIC30F/33F Programmer's Reference Manual" (DS70157).
The dsPIC30F oscillator system has the following modules and features: * Various external and internal oscillator options as clock sources * An on-chip PLL to boost internal operating frequency * A clock switching mechanism between various clock sources * Programmable clock postscaler for system power savings * A Fail-Safe Clock Monitor (FSCM) that detects clock failure and takes fail-safe measures * Clock Control register OSCCON * Configuration bits for main oscillator selection Configuration bits determine the clock source upon Power-on Reset (POR). Thereafter, the clock source can be changed between permissible clock sources. The OSCCON register controls the clock switching and reflects system clock related status bits. Note: 32 kHz crystal operation is not enabled on dsPIC30F1010/202X devices. Table 18-1 provides a summary of the dsPIC30F oscillator operating modes. A simplified diagram of the oscillator system is shown in Figure 18-1.
There are several features intended to maximize system reliability, minimize cost through elimination of external components, provide power-saving operating modes and offer code protection: * Oscillator Selection * Reset: - Power-on Reset (POR) - Power-up Timer (PWRT) - Oscillator Start-up Timer (OST) * Watchdog Timer (WDT) * Power-Saving modes (Sleep and Idle) * Code Protection * Unit ID Locations * In-Circuit Serial Programming (ICSP) programming capability dsPIC30F devices have a Watchdog Timer, which can be permanently enabled via the Configuration bits or can be software controlled. It runs off its own RC oscillator for added reliability. There are two timers that offer necessary delays on power-up. One is the Oscillator Start-up Timer (OST), intended to keep the chip in Reset until the crystal oscillator is stable. The other is the Power-up Timer (PWRT), which provides a delay on power-up only, designed to keep the part in Reset mode while the power supply stabilizes. With these two timers on-chip, most applications need no external Reset circuitry. Sleep mode is designed to offer a very low-current Power-Down mode. The user can wake-up from Sleep mode through external Reset, Watchdog Timer Wakeup or through an interrupt. Several oscillator options are also made available to allow the part to fit a wide variety of applications. In the Idle mode, the clock sources are still active, but the CPU is shut off. The RC oscillator option saves system cost, while the LP crystal option saves power.
18.2
Oscillator Control REGISTERS
The oscillators are controlled with OSCCON, OSCTUN, OSCTUN2, FOSC and the FOSCSEL registers.
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dsPIC30F1010/202X
REGISTER 18-1:
U-0 -- bit 15 R/W-0 CLKLOCK bit 7 Legend: R = Readable bit -n = Value at POR HC = Cleared by hardware bit 15 bit 14-12 x = Bit is unknown W = Writable bit `1' = Bit is set HS = Set by hardware U = Unimplemented bit, read as `0' `0' = Bit is cleared -y = Value set from Configuration bits on POR U-0 -- R-0 HS,HC LOCK R/W-0 PRCDEN R/C-0 HS,HC CF R/W-0 TSEQEN U-0 --
OSCCON: OSCILLATOR CONTROL REGISTER
R-y HS,HC R-y HS,HC COSC<2:0> R-y HS,HC U-0 -- R/W-y R/W-y NOSC<2:0> bit 8 R/W-0 HC OSWEN bit 0 R/W-y
Unimplemented: Read as `0' COSC<2:0>: Current Oscillator Group Selection bits (read-only) 000 = Fast RC Oscillator (FRC) 001 = Fast RC Oscillator (FRC) with PLL Module 010 = Primary Oscillator (HS, EC) 011 = Primary Oscillator (HS, EC) with PLL Module 100 = Reserved 101 = Reserved 110 = Reserved 111 = Reserved This bit is Reset upon: Set to FRC value (`000') on POR Loaded with NOSC<2:0> at the completion of a successful clock switch Set to FRC value (`000') when FSCM detects a failure and switches clock to FRC Unimplemented: Read as `0' NOSC<2:0>: New Oscillator Group Selection bits 000 = Fast RC Oscillator (FRC) 001 = Fast RC Oscillator (FRC) with PLL Module 010 = Primary Oscillator (HS, EC) 011 = Primary Oscillator (HS, EC) with PLL Module 100 = Reserved 101 = Reserved 110 = Reserved 111 = Reserved CLKLOCK: Clock Lock Enabled bit 1 = If (FCKSM1 = 1), then clock and PLL configurations are locked If (FCKSM1 = 0), then clock and PLL configurations may be modified 0 = Clock and PLL selection are not locked, configurations may be modified Note: Once set, this bit can only be cleared via a Reset. Unimplemented: Read as `0'
bit 11 bit 10-8
bit 7
bit 6
DS70178A-page 192
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dsPIC30F1010/202X
REGISTER 18-1:
bit 5
OSCCON: OSCILLATOR CONTROL REGISTER (CONTINUED)
LOCK: PLL Lock Status bit (read-only) 1 = Indicates that PLL is in lock 0 = Indicates that PLL is out of lock (or disabled) This bit is Reset upon: Reset on POR Reset when a valid clock switching sequence is initiated by the clock switch state machine Set when PLL lock is achieved after a PLL start Reset when lock is lost Read zero when PLL is not selected as a Group 1 system clock PRCDEN: Pseudo Random Clock Dither Enable bit 1 = Pseudo random clock dither is enabled 0 = Pseudo random clock dither is disabled. CF: Clock Fail Detect bit (read/clearable by application) 1 = FSCM has detected clock failure 0 = FSCM has NOT detected clock failure This bit is Reset upon: Reset on POR Reset when a valid clock switching sequence is initiated by the clock switch state machine Set when clock fail detected TSEQEN: FRC Tune Sequencer Enable bit 1 = The TUN<3:0>, TSEQ1<3:0>, ... , TSEQ7<3:0> bits in the OSCTUN and the OSCTUN2 registers sequentially tune the FRC oscillator. Each field being sequentially selected via the ROLL<2:0> signals from the PWM module. 0 = The TUN<3:0> bits in OSCTUN register tunes the FRC oscillator. Unimplemented: Read as `0' OSWEN: Oscillator Switch Enable bit 1 = Request oscillator switch to selection specified by NOSC<1:0> bits 0 = Oscillator switch is complete This bit is Reset upon: Reset on POR Reset after a successful clock switch Reset after a redundant clock switch Reset after FSCM switches the oscillator to (Group 3) FRC
bit 4
bit 3
bit 2
bit 1 bit 0
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dsPIC30F1010/202X
REGISTER 18-2:
R/W-0 bit 15 R/W-0 bit 7 Legend: R = Readable bit -n = Value at POR bit 15-12 bit 11-8 bit 7-4 bit 3-0 W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
OSCTUN: OSCILLATOR TUNING REGISTER
R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 bit 8 R/W-0 bit 0 TSEQ3<3:0> TSEQ2<3:0>
TSEQ1<3:0>
TUN<3:0>
TSEQ3<3:0>: Tune Sequence Value #3 bits When PWM ROLL<2:0> = 011, this field is used to tune the FRC instead of TUN<3:0> TSEQ2<3:0>: Tune Sequence Value #2 bits When PWM ROLL<2:0> = 010, this field is used to tune the FRC instead of TUN<3:0> TSEQ1<3:0>: Tune Sequence Value #1 bits When PWM ROLL<2:0> = 001, this field is used to tune the FRC instead of TUN<3:0> TUN<3:0>: Specifies the user tuning capability for the internal fast RC oscillator (nominal 15.0 MHz). If the TSEQEN bit in the OSCCON register is set, this field, along with bits TSEQ1-TSEQ7, will sequentially tune the FRC oscillator. 0111 = Maximum frequency 0110 = 0101 = 0100 = 0011 = 0010 = 0001 = 0000 = Center frequency, oscillator is running at calibrated frequency 1111 = 1110 = 1101 = 1100 = 1011 = 1010 = 1001 = 1000 = Minimum frequency
DS70178A-page 194
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dsPIC30F1010/202X
REGISTER 18-3:
R/W-0 bit 15 R/W-0 bit 7 Legend: R = Readable bit -n = Value at POR bit 15-12 bit 11-8 bit 7-4 bit 3-0 W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
OSCTUN2: OSCILLATOR TUNING REGISTER
R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 bit 8 R/W-0 bit 0 TSEQ7<3:0> TSEQ6<3:0>
TSEQ5<3:0>
TSEQ4<3:0>
TSEQ7<3:0>: Tune Sequence value #7 bits When PWM ROLL<2:0> = 111, this field is used to tune the FRC instead of TUN<3:0> TSEQ6<3:0>: Tune Sequence value #6 bits When PWM ROLL<2:0> = 110, this field is used to tune the FRC instead of TUN<3:0> TSEQ5<3:0>: Tune Sequence value #5 bits When PWM ROLL<2:0> = 101, this field is used to tune the FRC instead of TUN<3:0> TSEQ4<3:0>: Tune Sequence value #4 bits When PWM ROLL<2:0> = 100, this field is used to tune the FRC instead of TUN<3:0>
REGISTER 18-4:
U-0 -- bit 15 R/W-0 bit 7 Legend: R = Readable bit -n = Value at POR bit 15 bit 14-8 bit 7-0
LFSR: LINEAR FEEDBACK SHIFT REGISTER
R/W-0 R/W-0 R/W-0 R/W-0 LFSR<14:8> bit 8 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 bit 0 R/W-0 R/W-0 R/W-0
LFSR<7:0>
W = Writable bit `1' = Bit is set
U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown
Unimplemented: Read as `0' When PS PWM ROLL<2:0> = 111, this field is used to tune the FRC instead of TUN<3:0> LFSR <14:8>: Most Significant 7 bits of the pseudo random FRC trim value bits LFSR <7:0>: Least Significant 8 bits of the pseudo random FRC trim value bits
(c) 2006 Microchip Technology Inc.
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dsPIC30F1010/202X
18.2.1 PROTECTION AGAINST ACCIDENTAL WRITES TO OSCCON REGISTER
Because the OSCCON register allows clock switching and clock scaling, a write to OSCCON is intentionally made difficult. To write to OSCCON low byte, this exact sequence must be executed without any other instructions in between: * Byte Write "46h" to OSCCON low * Byte Write "57h" to OSCCON low * Byte Write is allowed for one instruction cycle. mov.b W0,OSCCON To write to OSCCON high byte, this exact sequence must be executed without any other instructions in between: * Byte Write "78h" to OSCCON high * Byte Write "9Ah" to OSCCON high * Byte Write is allowed for one instruction cycle. mov.b W0,OSCCON + 1
DS70178A-page 196
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dsPIC30F1010/202X
REGISTER 18-5:
U -- bit 23 U -- bit 15 U -- bit 7 Legend: R = Readable bit -n = Value at POR bit 23-2 bit 1-0 W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown U -- U -- U -- U -- U -- R/P FNOSC1 R/P FNOSC0 bit 0 U -- U -- U -- U -- U -- U -- U -- bit 8
FOSCSEL: OSCILLATOR SELECTION CONFIGURATION BITS
U -- U -- U -- U -- U -- U -- U -- bit 16
Unimplemented: Read as `0' FNOSC<1:0>: Initial Oscillator Group Selection on POR bits 00 = Fast RC Oscillator (FRC) 01 = Fast RC Oscillator (FRC) divided by N, with PLL module. 10 = Primary Oscillator (HS,EC). 11 = Primary Oscillator (HS,EC) with PLL module.
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dsPIC30F1010/202X
REGISTER 18-6:
U -- bit 23 U -- bit 15 R/P bit 7 Legend: R = Readable bit -n = Value at POR bit 23-8 bit 7-6 W = Writable bit `1' = Bit is set U = Unimplemented bit, read as `0' `0' = Bit is cleared x = Bit is unknown R/P R/P FRANGE U -- U -- R/P OSCIOFNC R/P R/P bit 0 U -- U -- U -- U -- U -- U -- U -- bit 8
scillator Operating Modes
FOSC: OSCILLATOR SELECTION CONFIGURATION BITS
U -- U -- U -- U -- U -- U -- U -- bit 16
FCKSM<1:0>
POSCMD<1:0>
Unimplemented: Read as `0' FCKSM<1:0>: Clock Switching and Monitor Selection Configuration bits 1x = Clock switching is disabled, fail-safe clock monitor is disabled. 01 = Clock switching is enabled, fail-safe clock monitor is disabled. 00 = Clock switching is enabled, fail-safe clock monitor is enabled FRANGE: Frequency Range Select for FRC and PLL bit Acts like a "Gear Shift" feature that enables the dsPIC DSC device to operate at reduced MIPS at a reduced supply voltage (3.3V) 0 = "Low Range" (FRC operates at a nominal 9.7 MHz, PLL VCO at a nominal 301 MHz (320 max)) 1 = "High Range" (FRC operates at a nominal 14.55 MHz, PLL VCO at a nominal 451 MHz. (480 max)) Unimplemented: Read as `0' OSCIOFNC: OSC2 PIn I/O Enable bit 1 = CLKO output signal active on the OSCO pin. 0 = CLKO output disabled POSCMD<1:0>: Primary Oscillator Mode 11 = Primary Oscillator Disabled 10 = HS oscillator mode selected. 01 = Reserved 00 = External clock mode selected.
bit 5
bit 4-3 bit 3
bit 1-0
DS70178A-page 198
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dsPIC30F1010/202X
FIGURE 18-1: OSCILLATOR SYSTEM BLOCK DIAGRAM
Oscillator Configuration Bits FPWM PWRSAV Instruction Wake-up Request FPLL OSC1 OSC2 Primary Oscillator PLL x32
PLL Lock COSC<1:0> NOSC<1:0>
Primary Osc
TUN<3:0> 4
Primary Oscillator Stability Detector
Clock Switching and Control Block
OSWEN
Internal Fast RC Oscillator (FRC)
POR Done
Oscillator Start-up Timer Programmable Clock Divider System Clock Internal Low-Power RC Oscillator (LPRC) 2 POST<1:0>
Clock Dither Circuit
FCKSM<1:0> 2
Fail-Safe Clock Monitor (FSCM)
CF Oscillator Trap
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18.3
18.3.1
Oscillator Configurations
INITIAL CLOCK SOURCE SELECTION
While coming out of a Power-on Reset, the device selects its clock source based on: a) b) c) FNOSC<1:0> Configuration bits that select one of three oscillator groups (HS, EC or FRC) POSCMD1<1:0> Configuration bits that select the Primary Oscillator Mode OSCIOFNC selects if the OSC2 pin is an I/O or clock output
The selection is as shown in Table 18-1.
TABLE 18-1:
CONFIGURATION BIT VALUES FOR CLOCK SELECTION
Oscillator Source PLL PLL PLL PLL PLL External External External Internal RC Internal RC FNOSC<1:0> Bit 1 1 0 0 1 1 1 1 1 0 0 Bit 0 1 1 1 1 1 0 0 0 0 0 POSCMD<1:0> OSCIOFNC Bit 1 1 1 1 0 0 0 0 1 1 1 Bit 0 0 1 1 0 0 0 0 0 1 1 N/A 1 0 1 0 1 0 N/A 0 1 OSC2 Function CLKOUT(1) CLKOUT I/O CLKOUT I/O CLKOUT I/O CLKOUT(1) I/O CLKOUT OSC1 Function CLKI I/O I/O CLKI CLKI CLKI CLKI CLKI I/O I/O
Oscillator Mode HS w/PLL 32x FRC w/PLL 32x FRC w/PLL 32x EC w/PLL 32x EC w/PLL 32x EC(2) EC(2) HS(2) FRC(2) FRC(2) Note 1: 2:
CLKOUT is not recommended to drive external circuits. This mode is not recommended for some applications; disabling 32x PLL will not allow operation of high-speed ADC and PWM.
18.3.2
OSCILLATOR START-UP TIMER (OST)
TABLE 18-2:
FIN 9.7 MHz 14.55 MHz
PLL FREQUENCY RANGE
PLL Multiplier x32 x32 FOUT 310 MHz 466 MHz
In order to ensure that a crystal oscillator (or ceramic resonator) has started and stabilized, an Oscillator Start-up Timer is included. It is a simple 10-bit counter that counts 1024 TOSC cycles before releasing the oscillator clock to the rest of the system. The time-out period is designated as TOST. The TOST time is involved every time the oscillator has to restart (i.e., on POR and wake-up from Sleep). The Oscillator Start-up Timer is applied to the HS Oscillator mode (upon wake-up from Sleep and POR) for the primary oscillator.
The PLL features a lock output, which is asserted when the PLL enters a phase locked state. Should the loop fall out of lock (e.g., due to noise), the lock signal will be rescinded. The state of this signal is reflected in the read-only LOCK bit in the OSCCON register.
18.3.3
PHASE LOCKED LOOP (PLL)
The PLL multiplies the clock, which is generated by the primary oscillator. The PLL is selectable to have a gain of x32 only. Input and output frequency ranges are summarized in Table 18-2.
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18.4 PRIMARY OSCILLATOR ON OSC1/ OSC2 PINS:
The primary oscillator uses is shown in Figure 18-2.
FIGURE 18-2:
PRIMARY OSCILLATOR
OSC1/CLKI C1 XTAL OSC2/CLKO RF (2) To CLKGEN
C2
Rs (1)
CLKO/RC15
Note 1: A series resistor, Rs, may be required for AT strip cut crystals. 2: The feedback resistor, RF, is typically in the range of 2 to 10 M.
18.5
EXTERNAL CLOCK INPUT
Two of the primary Oscillator modes use an external clock. These modes are EC and EC with IO. In the EC mode (Figure 18-3), the OSC1 pin can be driven by CMOS drivers. In this mode, the OSC1 pin is high-impedance and the OSC2 pin is the clock output (FOSC/2). This output clock is useful for testing or synchronization purposes.
In the EC with IO mode (Figure 18-4), the OSC1 pin can be driven by CMOS drivers. In this mode, the OSC1 pin is high-impedance and the OSC2 pin becomes a general purpose I/O pin. The feedback device between OSC1 and OSC2 is turned off to save current.
FIGURE 18-3:
EXTERNAL CLOCK INPUT OPERATION (EC OSCILLATOR CONFIGURATION)
Clock from Ext System FOSC/2 OSC1 dsPIC30F OSC2
FIGURE 18-4:
EXTERNAL CLOCK INPUT OPERATION (ECIO OSCILLATOR CONFIGURATION)
Clock from Ext System I/O OSC1 dsPIC30F I/O (OSC2)
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18.6 INTERNAL FAST RC OSCILLATOR (FRC)
ways to vary system clock frequency on a PWM cycle basis. These are Frequency Sequencing mode and Pseudo Random Clock Dithering mode. Table 18-5 shows the implementation details of both these methods.
FRC is a fast, precise frequency internal RC oscillator. The FRC oscillator is designed to run at a frequency of 9.7/14.55 MHz (1% accuracy). The FRC oscillator option is intended to be accurate enough to provide the clock frequency necessary to maintain baud rate tolerance for serial data transmissions. The user has the ability to tune the FRC frequency by +-3%. The FRC oscillator is powered: a) b) Any time the EC or HS Oscillator modes are NOT selected. When the fail-safe clock monitor is enabled and a clock fail is detected, forcing a switch to FRC. FREQUENCY RANGE SELECTION
18.6.5
FREQUENCY SEQUENCING MODE
The Frequency Sequencing mode enables the PWM module to select a sequence of eight different FRC TUN values to vary the system frequency with each rollover of the primary PWM time base. The OSCTUN and the OSCTUN2 registers allow the user to specify eight sequential tune values if the TSEQEN bit is set in the OSCCON register. If the TSEQEN bit is zero, then only the TUN bits affect the FRC frequency. A 4-bit wide multiplexer with eight sets of inputs selects the tuning value from the TUN and the TSEQx bit fields. The multiplexer is controlled by the ROLL<5:3> counter in the PWM module. The ROLL<5:3> counter increments every time the primary time base rolls over after reaching the period value.
18.6.1
The FRC module has a "Gear Shift" control signal that selects "Low Range" (9.7 MHz) or "High Range" (14.55 MHz) frequency of operation. This feature enables a dsPIC DSC device to operate at 3.3V/5.0V at 20/30 MIPS and remain with system specifications. 18.6.2 NOMINAL FREQUENCY VALUES
18.6.6
PSEUDO RANDOM CLOCK DITHERING MODE
The FRC module is calibrated to a nominal 9.7 MHz in "Low Range" and 14.55 MHz in "High Range" This feature enables a user to "TUNE" the dsPIC DSC device frequency of operation by +-3% and still remain within system specifications. 18.6.3 FRC FREQUENCY USER TUNING
The FRC is calibrated at the factory to give a nominal 9.7/14.55 MHz. The TUN<3:0> field in the OSCTUN register is available to the user for trimming the FRC oscillator frequency in applications. The 4-bit tuning control signals are supplied by the OSCTUN or the OSCTUN2 registers depending on the TSEQEN bit in the OSCCON register. The tuning range of the 15 MHz oscillator is 0.45 MHz (3%) nominal. The base frequency can be tuned in the user's application. This frequency tuning capability allows the user to deviate from the factory calibrated frequency. The user can tune the frequency by writing to the OSCTUN register TUN<3:0> bits. 18.6.4 CLOCK DITHERING LOGIC
The Pseudo Random Clock Dither (PRCD) logic is implemented with a 15-bit LFSR (Linear Feedback Shift Register), which is a shift register with a few exclusive OR gates. The lower four bits of the LFSR provides the FRC TUNE bits. The PRCD feature is enabled by setting the PRCDEN bit in the OSCCON register. The LSFR is "clocked" (enabled to clock) once every time the ROLL<3> bit changes state, which occurs once every 8 PWM cycles.
18.6.7
FAIL-SAFE CLOCK MONITOR
The Fail-Safe Clock Monitor (FSCM) allows the device to continue to operate even in the event of an oscillator failure. The FSCM function is enabled by appropriately programming the FCKSM Configuration bits (Clock Switch and Monitor Selection bits) in the FOSC Configuration register. In the event of an oscillator failure, the FSCM will generate a clock failure trap event and will switch the system clock over to the FRC oscillator. The user will then have the option to either attempt to restart the oscillator or execute a controlled shutdown. The user may decide to treat the trap as a warm Reset by simply loading the Reset address into the oscillator fail trap vector. In this event, the CF (Clock Fail) status bit (OSCCON<3>) is also set whenever a clock failure is recognized. In the event of a clock failure, the WDT is unaffected and continues to run on the LPRC clock. If the oscillator has a very slow start-up time coming out of POR or Sleep, it is possible that the PWRT timer will expire before the oscillator has started. In such cases, the FSCM will be activated and the FSCM will
In power conversion applications, the primary electrical noise emission that the designers want to reduce is caused by the power transistors switching at the PWM frequency. By changing the system clock frequency of the SMPS dsPIC DSC, the resultant PWM frequency will change and the peak EMI will be reduced at the noise is spread over a wider frequency range. Typically, the range of frequency variation is few percent. The dsPIC30F1010/202X can provide two
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initiate a clock failure trap, and the COSC<2:0> bits are loaded with FRC oscillator selection. This will effectively shut off the original oscillator that was trying to start. The user may detect this situation and restart the oscillator in the clock fail trap, ISR. Upon a clock failure detection, the FSCM module will initiate a clock switch to the FRC oscillator as follows: 1. 2. 3. The COSC bits (OSCCON<14:12>) are loaded with the FRC oscillator selection value CF bit is set (OSCCON<3>) OSWEN control bit (OSCCON<0>) is cleared
18.7
Reset
The dsPIC30F1010/202X differentiates between various kinds of Reset: a) b) c) d) e) f) g) Power-on Reset (POR) MCLR Reset during normal operation MCLR Reset during Sleep Watchdog Timer (WDT) Reset (during normal operation) RESET Instruction Reset cause by trap lock-up (TRAPR) Reset caused by illegal opcode, or by using an uninitialized W register as an Address Pointer (IOPUWR)
For the purpose of clock switching, the clock sources are sectioned into two groups: 1. 2. Primary Internal FRC
The user can switch between these functional groups, but cannot switch between options within a group. If the primary group is selected, then the choice within the group is always determined by the FNOSC<1:0> Configuration bits. The OSCCON register holds the control and status bits related to clock switching. If Configuration bits FCKSM<1:0> = 1x, then the clock switching and FailSafe Clock Monitor functions are disabled. This is the default Configuration bit setting. If clock switching is disabled, then the FNOSC<1:0> and POSCMD<1:0> bits directly control the oscillator selection and the COSC<2:0> bits do not control the clock selection. However, these bits will reflect the clock source selection. Note: The application should not attempt to switch to a clock frequency lower than 100 KHz when the Fail-Safe Clock Monitor is enabled. If clock switching is performed, the device may generate an oscillator fail trap and switch to the Fast RC oscillator.
Different registers are affected in different ways by various Reset conditions. Most registers are not affected by a WDT wake-up, since this is viewed as the resumption of normal operation. Status bits from the RCON register are set or cleared differently in different Reset situations, as indicated in Table 18-3. These bits are used in software to determine the nature of the Reset. A block diagram of the on-chip Reset circuit is shown in Figure 18-6. A MCLR noise filter is provided in the MCLR Reset path. The filter detects and ignores small pulses. Internally generated Resets do not drive MCLR pin low.
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FIGURE 18-5: FRC TUNE DITHER LOGIC BLOCK DIAGRAM
PWM PS ROLL Counter ROLL<5:3> ROLL<2:0>
3 TSEQEN in OSCCON 15 12 11 OSCTUN 43 0
ROLL<3>
Shift Enable for LFSR DQ CLK
TSEQ3 TSEQ2 TSEQ1 TUN 0 1 2 3 4 5 6 8 PRCDEN in OSCCON MUX 4 0 MUX 4 TUNE BIts to FRC
4
15
12 11
7
3
0
1 All Zero Detect
TSEQ7 TSEQ6 TSEQ5 TSEQ4 OSCTUN2
4
D Q0 D Q1 D Q2 D Q3 D Q4 D Q5 D Q6
LFSR
D Q7 D Q8 D Q9 D Q10 CLK Q D Q11 CLK Q D Q12 CLK Q D Q13 CLK Q D Q14 CLK Q
15
CLK Q
CLK Q
CLK Q
CLK Q
CLK Q
CLK Q
CLK Q
CLK Q
CLK Q
CLK Q
FIGURE 18-6:
RESET Instruction
RESET SYSTEM BLOCK DIAGRAM
Digital Glitch Filter MCLR Sleep or Idle WDT Module VDD Rise Detect VDD POR
S
R Trap Conflict Illegal Opcode/ Uninitialized W Register
Q
SYSRST
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18.7.1 POR: POWER-ON RESET
A power-on event will generate an internal POR pulse when a VDD rise is detected. The Reset pulse will occur at the POR circuit threshold voltage (VPOR), which is nominally 1.85V. The device supply voltage characteristics must meet specified starting voltage and rise rate requirements. The POR pulse will reset a POR timer and place the device in the Reset state. The POR also selects the device clock source identified by the oscillator configuration fuses. The POR circuit inserts a small delay, TPOR, which is nominally 10 s and ensures that the device bias circuits are stable. Furthermore, a user selected powerup time-out (TPWRT) is applied. The TPWRT parameter is based on Configuration bits and can be 0 ms (no delay), 4 ms, 16 ms or 64 ms. The total delay is at device power-up TPOR + TPWRT. When these delays have expired, SYSRST will be negated on the next leading edge of the Q1 clock, and the PC will jump to the Reset vector. The timing for the SYSRST signal is shown in Figure 18-7 through Figure 18-9.
FIGURE 18-7:
VDD MCLR Internal POR
TIME-OUT SEQUENCE ON POWER-UP (MCLR TIED TO VDD)
TOST OST Time-out TPWRT PWRT Time-out
Internal Reset
FIGURE 18-8:
TIME-OUT SEQUENCE ON POWER-UP (MCLR NOT TIED TO VDD): CASE 1
VDD MCLR Internal POR
TOST OST Time-out TPWRT PWRT Time-out
Internal Reset
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FIGURE 18-9: TIME-OUT SEQUENCE ON POWER-UP (MCLR NOT TIED TO VDD): CASE 2
VDD MCLR Internal POR TOST OST Time-out TPWRT PWRT Time-out Internal Reset
18.7.1.1
POR with Long Crystal Start-up Time (with FSCM Enabled)
FIGURE 18-10:
The oscillator start-up circuitry is not linked to the POR circuitry. Some crystal circuits (especially low frequency crystals) will have a relatively long start-up time. Therefore, one or more of the following conditions is possible after the POR timer and the PWRT have expired: * The oscillator circuit has not begun to oscillate. * The Oscillator Start-up Timer has NOT expired (if a crystal oscillator is used). * The PLL has not achieved a LOCK (if PLL is used). If the FSCM is enabled and one of the above conditions is true, then a clock failure trap will occur. The device will automatically switch to the FRC oscillator and the user can switch to the desired crystal oscillator in the trap, ISR.
EXTERNAL POWER-ON RESET CIRCUIT (FOR SLOW VDD POWER-UP)
VDD D R R1 C MCLR
dsPIC30F
Note 1: External Power-on Reset circuit is required only if the VDD power-up slope is too slow. The diode D helps discharge the capacitor quickly when VDD powers down. 2: R should be suitably chosen so as to make sure that the voltage drop across R does not violate the device's electrical specification. 3: R1 should be suitably chosen so as to limit any current flowing into MCLR from external capacitor C, in the event of MCLR/VPP pin breakdown due to Electrostatic Discharge (ESD) or Electrical Overstress (EOS).
18.7.1.2
Operating without FSCM and PWRT
If the FSCM is disabled and the Power-up Timer (PWRT) is also disabled, then the device will exit rapidly from Reset on power-up. If the clock source is FRC or EC, it will be active immediately. If the FSCM is disabled and the system clock has not started, the device will be in a frozen state at the Reset vector until the system clock starts. From the user's perspective, the device will appear to be in Reset until a system clock is available.
Note:
Dedicated supervisory devices, such as the MCP1XX and MCP8XX, may also be used as an external Power-on Reset circuit.
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Table 18-3 shows the Reset conditions for the RCON register. Since the control bits within the RCON register are R/W, the information in the table implies that all the bits are negated prior to the action specified in the condition column.
TABLE 18-3:
INITIALIZATION CONDITION FOR RCON REGISTER CASE 1
Program Counter 0x000000 0x000000 0x000000 0x000000 0x000000 0x000000 PC + 2 PC + 2(1) 0x000004 0x000000 0x000000 TRAPR 0 0 0 0 0 0 0 0 0 1 0 IOPUWR 0 0 0 0 0 0 0 0 0 0 1 EXTR SWR WDTO IDLE SLEEP 0 1 0 1 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 0 1 1 0 0 0 POR 1 0 0 0 0 0 0 0 0 0 0
Condition Power-on Reset MCLR Reset during normal operation Software Reset during normal operation MCLR Reset during Sleep MCLR Reset during Idle WDT Time-out Reset WDT Wake-up Interrupt Wake-up from Sleep Clock Failure Trap Trap Reset Illegal Operation Trap Note 1:
When the wake-up is due to an enabled interrupt, the PC is loaded with the corresponding interrupt vector.
Table 18-4 shows a second example of the bit conditions for the RCON register. In this case, it is not assumed the user has set/cleared specific bits prior to action specified in the condition column.
TABLE 18-4:
INITIALIZATION CONDITION FOR RCON REGISTER CASE 2
Program Counter 0x000000 0x000000 0x000000 0x000000 0x000000 0x000000 PC + 2 PC + 2(1) 0x000004 0x000000 0x000000 TRAPR IOPUWR EXTR SWR WDTO IDLE SLEEP 0 u u u u u u u u 1 u 0 u u u u u u u u u 1 0 1 0 1 1 0 u u u u u 0 0 1 u u 0 u u u u u 0 0 0 0 0 1 1 u u u u 0 0 0 0 1 0 u u u u u 0 0 0 1 0 0 1 1 u u u POR 1 u u u u u u u u u u
Condition Power-on Reset MCLR Reset during normal operation Software Reset during normal operation MCLR Reset during Sleep MCLR Reset during Idle WDT Time-out Reset WDT Wake-up Interrupt Wake-up from Sleep Clock Failure Trap Trap Reset Illegal Operation Reset
Legend: u = unchanged Note 1: When the wake-up is due to an enabled interrupt, the PC is loaded with the corresponding interrupt vector.
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18.8
18.8.1
Watchdog Timer (WDT)
WATCHDOG TIMER OPERATION
The processor wakes up from Sleep if at least one of the following conditions has occurred: * any interrupt that is individually enabled and meets the required priority level * any Reset (POR and MCLR) * WDT time-out On waking up from Sleep mode, the processor will restart the same clock that was active prior to entry into Sleep mode. When clock switching is enabled, bits COSC<2:0> will determine the oscillator source that will be used on wake-up. If clock switch is disabled, then there is only one system clock. Note: If a POR occurred, the selection of the oscillator is based on the FGS<2:0> and FPG<1:0> Configuration bits.
The primary function of the Watchdog Timer (WDT) is to reset the processor in the event of a software malfunction. The WDT is a free-running timer, which runs off an on-chip RC oscillator, requiring no external component. Therefore, the WDT timer will continue to operate even if the main processor clock (e.g., the crystal oscillator) fails.
18.8.2
ENABLING AND DISABLING THE WDT
The Watchdog Timer can be "enabled" or "disabled" only through a Configuration bit (FWDTEN) in the Configuration register FWDT. Setting FWDTEN = 1 enables the Watchdog Timer. The enabling is done when programming the device. By default, after chip-erase, FWDTEN bit = 1. Any device programmer capable of programming dsPIC30F devices allows programming of this and other Configuration bits. If enabled, the WDT will increment until it overflows or "times out". A WDT time-out will force a device Reset (except during Sleep). To prevent a WDT time-out, the user must clear the Watchdog Timer using a CLRWDT instruction. If a WDT times out during Sleep, the device will wakeup. The WDTO bit in the RCON register will be cleared to indicate a wake-up resulting from a WDT time-out. Setting FWDTEN = 0 allows user software to enable/ disable the Watchdog Timer via the SWDTEN (RCON<5>) control bit.
If the clock source is an oscillator, the clock to the device is held off until OST times out (indicating a stable oscillator). If PLL is used, the system clock is held off until LOCK = 1 (indicating that the PLL is stable). Either way, TPOR, TLOCK and TPWRT delays are applied. If EC, FRC, oscillators are used, then a delay of TPOR (~10 s) is applied. This is the smallest delay possible on wake-up from Sleep. Moreover, if LP oscillator was active during Sleep, and LP is the oscillator used on wake-up, then the start-up delay will be equal to TPOR. PWRT delay and OST timer delay are not applied. In order to have the smallest possible start-up delay when waking up from Sleep, one of these faster wake-up options should be selected before entering Sleep. Any interrupt that is individually enabled (using the corresponding IE bit) and meets the prevailing priority level will be able to wake-up the processor. The processor will process the interrupt and branch to the ISR. The Sleep status bit in the RCON register is set upon wake-up. Note: In spite of various delays applied (TPOR, TLOCK and TPWRT), the crystal oscillator (and PLL) may not be active at the end of the time-out (e.g., for low frequency crystals). In such cases, if FSCM is enabled, the device will detect this as a clock failure and process the clock failure trap, the FRC oscillator will be enabled, and the user will have to re-enable the crystal oscillator. If FSCM is not enabled, then the device will simply suspend execution of code until the clock is stable, and will remain in Sleep until the oscillator clock has started.
18.9
Power-Saving Modes
There are two power-saving states that can be entered through the execution of a special instruction, PWRSAV. These are: Sleep and Idle. The format of the PWRSAV instruction is as follows: PWRSAV , where `parameter' defines Idle or Sleep mode.
18.9.1
SLEEP MODE
In Sleep mode, the clock to the CPU and peripherals is shutdown. If an on-chip oscillator is being used, it is shutdown. The Fail-Safe Clock Monitor is not functional during Sleep, since there is no clock to monitor. However, LPRC clock remains active if WDT is operational during Sleep.
All Resets will wake-up the processor from Sleep mode. Any Reset, other than POR, will set the Sleep status bit. In a POR, the Sleep bit is cleared. If Watchdog Timer is enabled, then the processor will wake-up from Sleep mode upon WDT time-out. The Sleep and WDTO status bits are both set.
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18.9.2 IDLE MODE
18.10 Device Configuration Registers
The Configuration bits in each device Configuration register specify some of the device modes and are programmed by a device programmer, or by using the In-Circuit Serial Programming (ICSP) feature of the device. Each device Configuration register is a 24-bit register, but only the lower 16 bits of each register are used to hold configuration data. There are four Configuration registers available to the user: 1. 2. 3. FOSC (0xF80000): Oscillator Configuration Register FWDT (0xF80002): Watchdog Timer Configuration Register FGS (0xF8000A): General Code Segment Configuration Register
In Idle mode, the clock to the CPU is shutdown while peripherals keep running. Unlike Sleep mode, the clock source remains active. Several peripherals have a control bit in each module that allows them to operate during Idle. LPRC fail-safe clock remains active if clock failure detect is enabled. The processor wakes up from Idle if at least one of the following conditions is true: * on any interrupt that is individually enabled (IE bit is `1') and meets the required priority level * on any Reset (POR, MCLR) * on WDT time-out Upon wake-up from Idle mode, the clock is re-applied to the CPU and instruction execution begins immediately, starting with the instruction following the PWRSAV instruction. Any interrupt that is individually enabled (using IE bit) and meets the prevailing priority level will be able to wake-up the processor. The processor will process the interrupt and branch to the ISR. The Idle status bit in RCON register is set upon wake-up. Any Reset, other than POR, will set the Idle status bit. On a POR, the Idle bit is cleared. If Watchdog Timer is enabled, then the processor will wake-up from Idle mode upon WDT time-out. The Idle and WDTO status bits are both set. Unlike wake-up from Sleep, there are no time delays involved in wake-up from Idle.
The placement of the Configuration bits is automatically handled when you select the device in your device programmer. The desired state of the Configuration bits may be specified in the source code (dependent on the language tool used), or through the programming interface. After the device has been programmed, the application software may read the Configuration bit values through the table read instructions. For additional information, please refer to the programming specifications of the device. Note: If the code protection configuration fuse bits (FGS and FGS) have been programmed, an erase of the entire code-protected device is only possible at voltages VDD 4.5V.
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18.11 In-Circuit Debugger
When MPLAB(R) ICD 2 is selected as a debugger, the in-circuit debugging functionality is enabled. This function allows simple debugging functions when used with MPLAB IDE. When the device has this feature enabled, some of the resources are not available for general use. These resources include the first 80 bytes of data RAM and two I/O pins. One of four pairs of Debug I/O pins may be selected by the user using configuration options in MPLAB IDE. These pin pairs are named EMUD/EMUC, EMUD1/ EMUC1, EMUD2/EMUC2 and EMUD3/EMUC3. In each case, the selected EMUD pin is the Emulation/ Debug Data line, and the EMUC pin is the Emulation/ Debug Clock line. These pins will interface to the MPLAB ICD 2 module available from Microchip. The selected pair of Debug I/O pins is used by MPLAB ICD 2 to send commands and receive responses, as well as to send and receive data. To use the in-circuit debugging function of the device, the design must implement ICSP connections to MCLR, VDD, VSS, PGC, PGD and the selected EMUDx/EMUCx pin pair. This gives rise to two possibilities: 1. If EMUD/EMUC is selected as the debug I/O pin pair, then only a 5-pin interface is required, as the EMUD and EMUC pin functions are multiplexed with the PGD and PGC pin functions in all dsPIC30F devices. If EMUD1/EMUC1, EMUD2/EMUC2 or EMUD3/ EMUC3 is selected as the debug I/O pin pair, then a 7-pin interface is required, as the EMUDx/EMUCx pin functions (x = 1, 2 or 3) are not multiplexed with the PGD and PGC pin functions.
2.
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TABLE 18-5:
Bit 13 -- -- TSEQ2<3:0> TSEQ6<3:0> TSEQ4<3:0> LFSR<14:0> T3MD -- -- CMP_PSMD -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- IC1MD -- -- -- -- -- -- T2MD T1MD -- PWMMD -- I2CMD -- U1MD -- SPI1MD -- -- ADCMD TSEQ5<3:0> TSEQ1<3:0> TUN<3:0> NOSC<2:0> CLKLOCK -- LOCK PRCDEN CF TSEQEN -- -- -- -- -- -- EXTR SWR SWDTEN WDTO SLEEP IDLE -- POR Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Reset State
SYSTEM INTEGRATION REGISTER MAP FOR dsPIC30F202X
SFR Name
Addr.
Bit 15
Bit 14
RCON
0740 TRAPR IOPUWR
Depends on type of Reset.
OSCCON
0742
--
COSC<2:0>
OSCTUN
0748
TSEQ3<3:0>
OSWEN Depends on Configuration bits. 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 -- 0000 0000 0000 0000
OSCTUN2 074A
TSEQ7<3:0>
LFSR
074C
--
PMD1
0770
--
--
(c) 2006 Microchip Technology Inc.
OC2MD OC1MD Bit 15 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- FWDTEN -- -- -- -- -- -- -- -- -- -- FCKSM<1:0> WWDTEN Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9 Bit 8 Bit 7 Bit 6 Bit 5 FRANGE -- -- -- -- Bit 4 -- FWPSA0 -- -- -- -- -- -- -- -- Bit 3 -- Bit 2 OSCIOFNC Bit 1 WDTPS<3:0> FPWRT<2:0> GSS0
PMD2
0772
--
--
PMD3
0774
--
--
Note:
Refer to the "dsPIC30F Family Reference Manual" (DS70046) for descriptions of register bit fields.
TABLE 18-6:
DEVICE CONFIGURATION REGISTER MAP
Bit 0 POSCMD<1:0>
File Name
Addr.
Bits 23-16
FOSC
F80008
--
FWDT
F8000A
--
FPOR
F8000C
--
FGS
F80004
--
GWRP FNOSC<1:0>
FOSCSEL
F80006
--
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Note:
Refer to the "dsPIC30F Family Reference Manual" (DS70046) for descriptions of register bit fields.
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NOTES:
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19.0 INSTRUCTION SET SUMMARY
Most bit-oriented instructions (including simple rotate/ shift instructions) have two operands: * The W register (with or without an address modifier) or file register (specified by the value of `Ws' or `f') * The bit in the W register or file register (specified by a literal value, or indirectly by the contents of register `Wb') The literal instructions that involve data movement may use some of the following operands: * A literal value to be loaded into a W register or file register (specified by the value of `k') * The W register or file register where the literal value is to be loaded (specified by `Wb' or `f') However, literal instructions that involve arithmetic or logical operations use some of the following operands: * The first source operand, which is a register `Wb' without any address modifier * The second source operand, which is a literal value * The destination of the result (only if not the same as the first source operand), which is typically a register `Wd' with or without an address modifier The MAC class of DSP instructions may use some of the following operands: * The accumulator (A or B) to be used (required operand) * The W registers to be used as the two operands * The X and Y address space prefetch operations * The X and Y address space prefetch destinations * The accumulator write back destination The other DSP instructions do not involve any multiplication, and may include: * The accumulator to be used (required) * The source or destination operand (designated as Wso or Wdo, respectively) with or without an address modifier * The amount of shift, specified by a W register `Wn' or a literal value The control instructions may use some of the following operands: * A program memory address * The mode of the Table Read and Table Write instructions All instructions are a single word, except for certain double word instructions, which were made double word instructions so that all the required information is available in these 48 bits. In the second word, the 8 MSbs are `0's. If this second word is executed as an instruction (by itself), it will execute as a NOP.
Note: This data sheet summarizes features of this group of dsPIC30F devices and is not intended to be a complete reference source. For more information on the CPU, peripherals, register descriptions and general device functionality, refer to the "dsPIC30F Family Reference Manual" (DS70046). For more information on the device instruction set and programming, refer to the "dsPIC30F/ 33F Programmer's Reference Manual" (DS70157).
The dsPIC30F instruction set adds many enhancements to the previous PICmicro(R) MCU instruction sets, while maintaining an easy migration from PICmicro MCU instruction sets. Most instructions are a single program memory word (24 bits). Only three instructions require two program memory locations. Each single-word instruction is a 24-bit word divided into an 8-bit opcode which specifies the instruction type, and one or more operands which further specify the operation of the instruction. The instruction set is highly orthogonal and is grouped into five basic categories: * * * * * Word or byte-oriented operations Bit-oriented operations Literal operations DSP operations Control operations
Table 19-1 shows the general symbols used in describing the instructions. The dsPIC30F instruction set summary in Table 19-2 lists all the instructions along with the status flags affected by each instruction. Most word or byte-oriented W register instructions (including barrel shift instructions) have three operands: * The first source operand, which is typically a register `Wb' without any address modifier * The second source operand, which is typically a register `Ws' with or without an address modifier * The destination of the result, which is typically a register `Wd' with or without an address modifier However, word or byte-oriented file register instructions have two operands: * The file register specified by the value `f' * The destination, which could either be the file register `f' or the W0 register, which is denoted as `WREG'
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Most single-word instructions are executed in a single instruction cycle, unless a conditional test is true or the Program Counter is changed as a result of the instruction. In these cases, the execution takes two instruction cycles with the additional instruction cycle(s) executed as a NOP. Notable exceptions are the BRA (unconditional/computed branch), indirect CALL/GOTO, all Table Reads and Writes and RETURN/RETFIE instructions, which are single-word instructions, but take two or three cycles. Certain instructions that involve skipping over the subsequent instruction, require either two or three cycles if the skip is performed, depending on whether the instruction being skipped is a singleword or two-word instruction. Moreover, double word moves require two cycles. The double word instructions execute in two instruction cycles. Note: For more details on the instruction set, refer to the "dsPIC30F/33F Programmer's Reference Manual" (DS70157).
TABLE 19-1:
Field
SYMBOLS USED IN OPCODE DESCRIPTIONS
Description Means literal defined by "text" Means "content of text" Means "the location addressed by text" Optional field or operation Register bit field Byte mode selection Double Word mode selection Shadow register select Word mode selection (default) One of two accumulators {A, B} Accumulator write back destination address register {W13, [W13] + = 2} 4-bit bit selection field (used in word addressed instructions) {0...15} MCU Status bits: Carry, Digit Carry, Negative, Overflow, Zero Absolute address, label or expression (resolved by the linker) File register address {0x0000...0x1FFF} 1-bit unsigned literal {0,1} 4-bit unsigned literal {0...15} 5-bit unsigned literal {0...31} 8-bit unsigned literal {0...255} 10-bit unsigned literal {0...255} for Byte mode, {0:1023} for Word mode 14-bit unsigned literal {0...16384} 16-bit unsigned literal {0...65535} 23-bit unsigned literal {0...8388608}; LSB must be `0' Field does not require an entry, may be blank DSP Status bits: AccA Overflow, AccB Overflow, AccA Saturate, AccB Saturate Program Counter 10-bit signed literal {-512...511} 16-bit signed literal {-32768...32767} 6-bit signed literal {-16...16}
#text (text) [text] {} .b .d .S .w Acc AWB bit4 C, DC, N, OV, Z Expr f lit1 lit4 lit5 lit8 lit10 lit14 lit16 lit23 None OA, OB, SA, SB PC Slit10 Slit16 Slit6
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TABLE 19-1:
Field Wb Wd Wdo Wm,Wn Wm*Wm Wm*Wn Wn Wnd Wns WREG Ws Wso Wx
SYMBOLS USED IN OPCODE DESCRIPTIONS (CONTINUED)
Description Base W register {W0..W15} Destination W register { Wd, [Wd], [Wd++], [Wd--], [++Wd], [--Wd] } Destination W register { Wnd, [Wnd], [Wnd++], [Wnd--], [++Wnd], [--Wnd], [Wnd+Wb] } Dividend, Divisor working register pair (direct addressing) Multiplicand and Multiplier working register pair for Square instructions {W4 * W4,W5 * W5,W6 * W6,W7 * W7} Multiplicand and Multiplier working register pair for DSP instructions {W4 * W5,W4 * W6,W4 * W7,W5 * W6,W5 * W7,W6 * W7} One of 16 working registers {W0..W15} One of 16 destination working registers {W0..W15} One of 16 source working registers {W0..W15} W0 (working register used in file register instructions) Source W register { Ws, [Ws], [Ws++], [Ws--], [++Ws], [--Ws] } Source W register { Wns, [Wns], [Wns++], [Wns--], [++Wns], [--Wns], [Wns+Wb] } X data space prefetch address register for DSP instructions {[W8] + = 6, [W8] + = 4, [W8] + = 2, [W8], [W8] - = 6, [W8] - = 4, [W8] - = 2, [W9] + = 6, [W9] + = 4, [W9] + = 2, [W9], [W9] - = 6, [W9] - = 4, [W9] - = 2, [W9 + W12],none} X data space prefetch destination register for DSP instructions {W4..W7} Y data space prefetch address register for DSP instructions {[W10] + = 6, [W10] + = 4, [W10] + = 2, [W10], [W10] - = 6, [W10] - = 4, [W10] - = 2, [W11] + = 6, [W11] + = 4, [W11] + = 2, [W11], [W11] - = 6, [W11] - = 4, [W11] - = 2, [W11 + W12], none} Y data space prefetch destination register for DSP instructions {W4..W7}
Wxd Wy
Wyd
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TABLE 19-2:
Base Instr # 1 Assembly Mnemonic ADD ADD ADD ADD ADD ADD ADD ADD 2 ADDC ADDC ADDC ADDC ADDC ADDC 3 AND AND AND AND AND AND 4 ASR ASR ASR ASR ASR ASR 5 6 BCLR BRA BCLR BCLR BRA BRA BRA BRA BRA BRA BRA BRA BRA BRA BRA BRA BRA BRA BRA BRA BRA BRA BRA BRA BRA BRA 7 8 9 10 BSET BSW BTG BTSC BSET BSET BSW.C BSW.Z BTG BTG BTSC BTSC
INSTRUCTION SET OVERVIEW
Assembly Syntax Acc f f,WREG #lit10,Wn Wb,Ws,Wd Wb,#lit5,Wd Wso,#Slit4,Acc f f,WREG #lit10,Wn Wb,Ws,Wd Wb,#lit5,Wd f f,WREG #lit10,Wn Wb,Ws,Wd Wb,#lit5,Wd f f,WREG Ws,Wd Wb,Wns,Wnd Wb,#lit5,Wnd f,#bit4 Ws,#bit4 C,Expr GE,Expr GEU,Expr GT,Expr GTU,Expr LE,Expr LEU,Expr LT,Expr LTU,Expr N,Expr NC,Expr NN,Expr NOV,Expr NZ,Expr OA,Expr OB,Expr OV,Expr SA,Expr SB,Expr Expr Z,Expr Wn f,#bit4 Ws,#bit4 Ws,Wb Ws,Wb f,#bit4 Ws,#bit4 f,#bit4 Ws,#bit4 Description Add Accumulators f = f + WREG WREG = f + WREG Wd = lit10 + Wd Wd = Wb + Ws Wd = Wb + lit5 16-bit Signed Add to Accumulator f = f + WREG + (C) WREG = f + WREG + (C) Wd = lit10 + Wd + (C) Wd = Wb + Ws + (C) Wd = Wb + lit5 + (C) f = f .AND. WREG WREG = f .AND. WREG Wd = lit10 .AND. Wd Wd = Wb .AND. Ws Wd = Wb .AND. lit5 f = Arithmetic Right Shift f WREG = Arithmetic Right Shift f Wd = Arithmetic Right Shift Ws Wnd = Arithmetic Right Shift Wb by Wns Wnd = Arithmetic Right Shift Wb by lit5 Bit Clear f Bit Clear Ws Branch if Carry Branch if greater than or equal Branch if unsigned greater than or equal Branch if greater than Branch if unsigned greater than Branch if less than or equal Branch if unsigned less than or equal Branch if less than Branch if unsigned less than Branch if Negative Branch if Not Carry Branch if Not Negative Branch if Not Overflow Branch if Not Zero Branch if accumulator A overflow Branch if accumulator B overflow Branch if Overflow Branch if accumulator A saturated Branch if accumulator B saturated Branch Unconditionally Branch if Zero Computed Branch Bit Set f Bit Set Ws Write C bit to Ws Write Z bit to Ws Bit Toggle f Bit Toggle Ws Bit Test f, Skip if Clear Bit Test Ws, Skip if Clear # of word s 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 # of cycles 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 (2) 1 (2) 1 (2) 1 (2) 1 (2) 1 (2) 1 (2) 1 (2) 1 (2) 1 (2) 1 (2) 1 (2) 1 (2) 1 (2) 1 (2) 1 (2) 1 (2) 1 (2) 1 (2) 2 1 (2) 2 1 1 1 1 1 1 Status Flags Affected OA,OB,SA,SB C,DC,N,OV,Z C,DC,N,OV,Z C,DC,N,OV,Z C,DC,N,OV,Z C,DC,N,OV,Z OA,OB,SA,SB C,DC,N,OV,Z C,DC,N,OV,Z C,DC,N,OV,Z C,DC,N,OV,Z C,DC,N,OV,Z N,Z N,Z N,Z N,Z N,Z C,N,OV,Z C,N,OV,Z C,N,OV,Z N,Z N,Z None None None None None None None None None None None None None None None None None None None None None None None None None None None None None None
1 None (2 or 3) 1 None (2 or 3)
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TABLE 19-2:
Base Instr # 11 Assembly Mnemonic BTSS BTSS BTSS 12 BTST BTST BTST.C BTST.Z BTST.C BTST.Z 13 BTSTS BTSTS BTSTS.C BTSTS.Z 14 15 CALL CLR CALL CALL CLR CLR CLR CLR 16 17 CLRWDT COM CLRWDT COM COM COM 18 CP CP CP CP 19 20 CP0 CPB CP0 CP0 CPB CPB CPB 21 22 23 24 25 26 CPSEQ CPSGT CPSLT CPSNE DAW DEC CPSEQ CPSGT CPSLT CPSNE DAW DEC DEC DEC 27 DEC2 DEC2 DEC2 DEC2 28 29 DISI DIV DISI DIV.S DIV.SD DIV.U DIV.UD 30 31 32 33 DIVF DO ED EDAC DIVF DO DO ED EDAC f f,WREG Ws,Wd f Wb,#lit5 Wb,Ws f Ws f Wb,#lit5 Wb,Ws Wb, Wn Wb, Wn Wb, Wn Wb, Wn Wn f f,WREG Ws,Wd f f,WREG Ws,Wd #lit14 Wm,Wn Wm,Wn Wm,Wn Wm,Wn Wm,Wn #lit14,Expr Wn,Expr Wm * Wm,Acc,Wx,Wy,Wxd Wm * Wm,Acc,Wx,Wy,Wxd
INSTRUCTION SET OVERVIEW (CONTINUED)
Assembly Syntax f,#bit4 Ws,#bit4 f,#bit4 Ws,#bit4 Ws,#bit4 Ws,Wb Ws,Wb f,#bit4 Ws,#bit4 Ws,#bit4 lit23 Wn f WREG Ws Acc,Wx,Wxd,Wy,Wyd,AWB Description Bit Test f, Skip if Set Bit Test Ws, Skip if Set Bit Test f Bit Test Ws to C Bit Test Ws to Z Bit Test Ws to C Bit Test Ws to Z Bit Test then Set f Bit Test Ws to C, then Set Bit Test Ws to Z, then Set Call subroutine Call indirect subroutine f = 0x0000 WREG = 0x0000 Ws = 0x0000 Clear Accumulator Clear Watchdog Timer f=f WREG = f Wd = Ws Compare f with WREG Compare Wb with lit5 Compare Wb with Ws (Wb - Ws) Compare f with 0x0000 Compare Ws with 0x0000 Compare f with WREG, with Borrow Compare Wb with lit5, with Borrow Compare Wb with Ws, with Borrow (Wb - Ws - C) Compare Wb with Wn, skip if = Compare Wb with Wn, skip if > Compare Wb with Wn, skip if < Compare Wb with Wn, skip if Wn = decimal adjust Wn f = f -1 WREG = f -1 Wd = Ws - 1 f = f -2 WREG = f - 2 Wd = Ws - 2 Disable Interrupts for k instruction cycles Signed 16/16-bit Integer Divide Signed 32/16-bit Integer Divide Unsigned 16/16-bit Integer Divide Unsigned 32/16-bit Integer Divide Signed 16/16-bit Fractional Divide Do code to PC + Expr, lit14 + 1 times Do code to PC + Expr, (Wn) + 1 times Euclidean Distance (no accumulate) Euclidean Distance # of word s 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 1 1 # of cycles Status Flags Affected
1 None (2 or 3) 1 None (2 or 3) 1 1 1 1 1 1 1 1 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Z C Z C Z Z C Z None None None None None OA,OB,SA,SB WDTO,Sleep N,Z N,Z N,Z C,DC,N,OV,Z C,DC,N,OV,Z C,DC,N,OV,Z C,DC,N,OV,Z C,DC,N,OV,Z C,DC,N,OV,Z C,DC,N,OV,Z C,DC,N,OV,Z
1 None (2 or 3) 1 None (2 or 3) 1 None (2 or 3) 1 None (2 or 3) 1 1 1 1 1 1 1 1 18 18 18 18 18 2 2 1 1 C C,DC,N,OV,Z C,DC,N,OV,Z C,DC,N,OV,Z C,DC,N,OV,Z C,DC,N,OV,Z C,DC,N,OV,Z None N,Z,C, OV N,Z,C, OV N,Z,C, OV N,Z,C, OV N,Z,C, OV None None OA,OB,OAB, SA,SB,SAB OA,OB,OAB, SA,SB,SAB
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TABLE 19-2:
Base Instr # 34 35 36 37 38 39 Assembly Mnemonic EXCH FBCL FF1L FF1R GOTO INC EXCH FBCL FF1L FF1R GOTO GOTO INC INC INC 40 INC2 INC2 INC2 INC2 41 IOR IOR IOR IOR IOR IOR 42 43 44 LAC LNK LSR LAC LNK LSR LSR LSR LSR LSR 45 MAC MAC MAC 46 MOV MOV MOV MOV MOV MOV.b MOV MOV MOV MOV.D MOV.D 47 48 MOVSAC MPY MOVSAC MPY MPY 49 50 51 MPY.N MSC MUL MPY.N MSC MUL.SS MUL.SU MUL.US MUL.UU MUL.SU MUL.UU MUL
INSTRUCTION SET OVERVIEW (CONTINUED)
Assembly Syntax Wns,Wnd Ws,Wnd Ws,Wnd Ws,Wnd Expr Wn f f,WREG Ws,Wd f f,WREG Ws,Wd f f,WREG #lit10,Wn Wb,Ws,Wd Wb,#lit5,Wd Wso,#Slit4,Acc #lit14 f f,WREG Ws,Wd Wb,Wns,Wnd Wb,#lit5,Wnd Wm * Wn,Acc,Wx,Wxd,Wy,Wyd, AWB Wm * Wm,Acc,Wx,Wxd,Wy,Wyd f,Wn f f,WREG #lit16,Wn #lit8,Wn Wn,f Wso,Wdo WREG,f Wns,Wd Ws,Wnd Acc,Wx,Wxd,Wy,Wyd,AWB Wm * Wn,Acc,Wx,Wxd,Wy,Wyd Wm * Wm,Acc,Wx,Wxd,Wy,Wyd Wm * Wn,Acc,Wx,Wxd,Wy,Wyd Description Swap Wns with Wnd Find Bit Change from Left (MSb) Side Find First One from Left (MSb) Side Find First One from Right (LSb) Side Go to address Go to indirect f=f+1 WREG = f + 1 Wd = Ws + 1 f=f+2 WREG = f + 2 Wd = Ws + 2 f = f .IOR. WREG WREG = f .IOR. WREG Wd = lit10 .IOR. Wd Wd = Wb .IOR. Ws Wd = Wb .IOR. lit5 Load Accumulator Link frame pointer f = Logical Right Shift f WREG = Logical Right Shift f Wd = Logical Right Shift Ws Wnd = Logical Right Shift Wb by Wns Wnd = Logical Right Shift Wb by lit5 Multiply and Accumulate Square and Accumulate Move f to Wn Move f to f Move f to WREG Move 16-bit literal to Wn Move 8-bit literal to Wn Move Wn to f Move Ws to Wd Move WREG to f Move Double from W(ns):W(ns + 1) to Wd Move Double from Ws to W(nd + 1):W(nd) Prefetch and store accumulator Multiply Wm by Wn to Accumulator Square Wm to Accumulator -(Multiply Wm by Wn) to Accumulator # of word s 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 # of cycles 1 1 1 1 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 1 1 1 1 1 1 1 1 1 1 1 1 Status Flags Affected None C C C None None C,DC,N,OV,Z C,DC,N,OV,Z C,DC,N,OV,Z C,DC,N,OV,Z C,DC,N,OV,Z C,DC,N,OV,Z N,Z N,Z N,Z N,Z N,Z OA,OB,OAB, SA,SB,SAB None C,N,OV,Z C,N,OV,Z C,N,OV,Z N,Z N,Z OA,OB,OAB, SA,SB,SAB OA,OB,OAB, SA,SB,SAB None N,Z N,Z None None None None N,Z None None None OA,OB,OAB, SA,SB,SAB OA,OB,OAB, SA,SB,SAB None OA,OB,OAB, SA,SB,SAB None None None None None None None
Wm * Wm,Acc,Wx,Wxd,Wy,Wyd, Multiply and Subtract from Accumulator AWB Wb,Ws,Wnd Wb,Ws,Wnd Wb,Ws,Wnd Wb,Ws,Wnd Wb,#lit5,Wnd Wb,#lit5,Wnd f {Wnd + 1, Wnd} = signed(Wb) * signed(Ws) {Wnd + 1, Wnd} = signed(Wb) * unsigned(Ws) {Wnd + 1, Wnd} = unsigned(Wb) * signed(Ws) {Wnd + 1, Wnd} = unsigned(Wb) * unsigned(Ws) {Wnd + 1, Wnd} = signed(Wb) * unsigned(lit5) {Wnd + 1, Wnd} = unsigned(Wb) * unsigned(lit5) W3:W2 = f * WREG
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TABLE 19-2:
Base Instr # 52 Assembly Mnemonic NEG NEG NEG NEG NEG 53 54 NOP POP NOP NOPR POP POP POP.D POP.S 55 PUSH PUSH PUSH PUSH.D PUSH.S 56 57 58 59 60 61 62 63 PWRSAV RCALL REPEAT RESET RETFIE RETLW RETURN RLC PWRSAV RCALL RCALL REPEAT REPEAT RESET RETFIE RETLW RETURN RLC RLC RLC 64 RLNC RLNC RLNC RLNC 65 RRC RRC RRC RRC 66 RRNC RRNC RRNC RRNC 67 68 69 SAC SE SETM SAC SAC.R SE SETM SETM SETM 70 SFTAC SFTAC SFTAC 71 SL SL SL SL SL SL f f,WREG Ws,Wd f f,WREG Ws,Wd f f,WREG Ws,Wd f f,WREG Ws,Wd Acc,#Slit4,Wdo Acc,#Slit4,Wdo Ws,Wnd f WREG Ws Acc,Wn Acc,#Slit6 f f,WREG Ws,Wd Wb,Wns,Wnd Wb,#lit5,Wnd #lit10,Wn #lit1 Expr Wn #lit14 Wn f Wso Wns f Wdo Wnd
INSTRUCTION SET OVERVIEW (CONTINUED)
Assembly Syntax Acc f f,WREG Ws,Wd Description Negate Accumulator f=f+1 WREG = f + 1 Wd = Ws + 1 No Operation No Operation Pop f from Top-of-Stack (TOS) Pop from Top-of-Stack (TOS) to Wdo Pop from Top-of-Stack (TOS) to W(nd):W(nd + 1) Pop Shadow Registers Push f to Top-of-Stack (TOS) Push Wso to Top-of-Stack (TOS) Push W(ns):W(ns + 1) to Top-of-Stack (TOS) Push Shadow Registers Go into Sleep or Idle mode Relative Call Computed Call Repeat Next Instruction lit14 + 1 times Repeat Next Instruction (Wn) + 1 times Software device Reset Return from interrupt Return with literal in Wn Return from Subroutine f = Rotate Left through Carry f WREG = Rotate Left through Carry f Wd = Rotate Left through Carry Ws f = Rotate Left (No Carry) f WREG = Rotate Left (No Carry) f Wd = Rotate Left (No Carry) Ws f = Rotate Right through Carry f WREG = Rotate Right through Carry f Wd = Rotate Right through Carry Ws f = Rotate Right (No Carry) f WREG = Rotate Right (No Carry) f Wd = Rotate Right (No Carry) Ws Store Accumulator Store Rounded Accumulator Wnd = sign extended Ws f = 0xFFFF WREG = 0xFFFF Ws = 0xFFFF Arithmetic Shift Accumulator by (Wn) Arithmetic Shift Accumulator by Slit6 f = Left Shift f WREG = Left Shift f Wd = Left Shift Ws Wnd = Left Shift Wb by Wns Wnd = Left Shift Wb by lit5 # of word s 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 # of cycles 1 1 1 1 1 1 1 1 2 1 1 1 2 1 1 2 2 1 1 1 3 (2) 3 (2) 3 (2) 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Status Flags Affected OA,OB,OAB, SA,SB,SAB C,DC,N,OV,Z C,DC,N,OV,Z C,DC,N,OV,Z None None None None None All None None None None WDTO,Sleep None None None None None None None None C,N,Z C,N,Z C,N,Z N,Z N,Z N,Z C,N,Z C,N,Z C,N,Z N,Z N,Z N,Z None None C,N,Z None None None OA,OB,OAB, SA,SB,SAB OA,OB,OAB, SA,SB,SAB C,N,OV,Z C,N,OV,Z C,N,OV,Z N,Z N,Z
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TABLE 19-2:
Base Instr # 72 Assembly Mnemonic SUB SUB SUB SUB SUB SUB SUB 73 SUBB SUBB SUBB SUBB SUBB SUBB 74 SUBR SUBR SUBR SUBR SUBR 75 SUBBR SUBBR SUBBR SUBBR SUBBR 76 77 78 79 80 81 82 SWAP TBLRDH TBLRDL TBLWTH TBLWTL ULNK XOR SWAP.b SWAP TBLRDH TBLRDL TBLWTH TBLWTL ULNK XOR XOR XOR XOR XOR 83 ZE ZE f f,WREG #lit10,Wn Wb,Ws,Wd Wb,#lit5,Wd Ws,Wnd
INSTRUCTION SET OVERVIEW (CONTINUED)
Assembly Syntax Acc f f,WREG #lit10,Wn Wb,Ws,Wd Wb,#lit5,Wd f f,WREG #lit10,Wn Wb,Ws,Wd Wb,#lit5,Wd f f,WREG Wb,Ws,Wd Wb,#lit5,Wd f f,WREG Wb,Ws,Wd Wb,#lit5,Wd Wn Wn Ws,Wd Ws,Wd Ws,Wd Ws,Wd Description Subtract Accumulators f = f - WREG WREG = f - WREG Wn = Wn - lit10 Wd = Wb - Ws Wd = Wb - lit5 f = f - WREG - (C) WREG = f - WREG - (C) Wn = Wn - lit10 - (C) Wd = Wb - Ws - (C) Wd = Wb - lit5 - (C) f = WREG - f WREG = WREG - f Wd = Ws - Wb Wd = lit5 - Wb f = WREG - f - (C) WREG = WREG - f - (C) Wd = Ws - Wb - (C) Wd = lit5 - Wb - (C) Wn = nibble swap Wn Wn = byte swap Wn Read Prog<23:16> to Wd<7:0> Read Prog<15:0> to Wd Write Ws<7:0> to Prog<23:16> Write Ws to Prog<15:0> Unlink frame pointer f = f .XOR. WREG WREG = f .XOR. WREG Wd = lit10 .XOR. Wd Wd = Wb .XOR. Ws Wd = Wb .XOR. lit5 Wnd = Zero-Extend Ws # of word s 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 # of cycles 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 1 1 1 1 1 1 1 Status Flags Affected OA,OB,OAB, SA,SB,SAB C,DC,N,OV,Z C,DC,N,OV,Z C,DC,N,OV,Z C,DC,N,OV,Z C,DC,N,OV,Z C,DC,N,OV,Z C,DC,N,OV,Z C,DC,N,OV,Z C,DC,N,OV,Z C,DC,N,OV,Z C,DC,N,OV,Z C,DC,N,OV,Z C,DC,N,OV,Z C,DC,N,OV,Z C,DC,N,OV,Z C,DC,N,OV,Z C,DC,N,OV,Z C,DC,N,OV,Z None None None None None None None N,Z N,Z N,Z N,Z N,Z C,Z,N
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20.0 DEVELOPMENT SUPPORT
20.1
The PICmicro(R) microcontrollers are supported with a full range of hardware and software development tools: * Integrated Development Environment - MPLAB(R) IDE Software * Assemblers/Compilers/Linkers - MPASMTM Assembler - MPLAB C18 and MPLAB C30 C Compilers - MPLINKTM Object Linker/ MPLIBTM Object Librarian - MPLAB ASM30 Assembler/Linker/Library * Simulators - MPLAB SIM Software Simulator * Emulators - MPLAB ICE 2000 In-Circuit Emulator - MPLAB ICE 4000 In-Circuit Emulator * In-Circuit Debugger - MPLAB ICD 2 * Device Programmers - PICSTART(R) Plus Development Programmer - MPLAB PM3 Device Programmer - PICkitTM 2 Development Programmer * Low-Cost Demonstration and Development Boards and Evaluation Kits
MPLAB Integrated Development Environment Software
The MPLAB IDE software brings an ease of software development previously unseen in the 8/16-bit microcontroller market. The MPLAB IDE is a Windows(R) operating system-based application that contains: * A single graphical interface to all debugging tools - Simulator - Programmer (sold separately) - Emulator (sold separately) - In-Circuit Debugger (sold separately) * A full-featured editor with color-coded context * A multiple project manager * Customizable data windows with direct edit of contents * High-level source code debugging * Visual device initializer for easy register initialization * Mouse over variable inspection * Drag and drop variables from source to watch windows * Extensive on-line help * Integration of select third party tools, such as HI-TECH Software C Compilers and IAR C Compilers The MPLAB IDE allows you to: * Edit your source files (either assembly or C) * One touch assemble (or compile) and download to PICmicro MCU emulator and simulator tools (automatically updates all project information) * Debug using: - Source files (assembly or C) - Mixed assembly and C - Machine code MPLAB IDE supports multiple debugging tools in a single development paradigm, from the cost-effective simulators, through low-cost in-circuit debuggers, to full-featured emulators. This eliminates the learning curve when upgrading to tools with increased flexibility and power.
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20.2 MPASM Assembler 20.5
The MPASM Assembler is a full-featured, universal macro assembler for all PICmicro MCUs. The MPASM Assembler generates relocatable object files for the MPLINK Object Linker, Intel(R) standard HEX files, MAP files to detail memory usage and symbol reference, absolute LST files that contain source lines and generated machine code and COFF files for debugging. The MPASM Assembler features include: * Integration into MPLAB IDE projects * User-defined macros to streamline assembly code * Conditional assembly for multi-purpose source files * Directives that allow complete control over the assembly process
MPLAB ASM30 Assembler, Linker and Librarian
MPLAB ASM30 Assembler produces relocatable machine code from symbolic assembly language for dsPIC30F devices. MPLAB C30 C Compiler uses the assembler to produce its object file. The assembler generates relocatable object files that can then be archived or linked with other relocatable object files and archives to create an executable file. Notable features of the assembler include: * * * * * * Support for the entire dsPIC30F instruction set Support for fixed-point and floating-point data Command line interface Rich directive set Flexible macro language MPLAB IDE compatibility
20.6 20.3 MPLAB C18 and MPLAB C30 C Compilers
MPLAB SIM Software Simulator
The MPLAB C18 and MPLAB C30 Code Development Systems are complete ANSI C compilers for Microchip's PIC18 family of microcontrollers and the dsPIC30, dsPIC33 and PIC24 family of digital signal controllers. These compilers provide powerful integration capabilities, superior code optimization and ease of use not found with other compilers. For easy source level debugging, the compilers provide symbol information that is optimized to the MPLAB IDE debugger.
The MPLAB SIM Software Simulator allows code development in a PC-hosted environment by simulating the PICmicro MCUs and dsPIC(R) DSCs on an instruction level. On any given instruction, the data areas can be examined or modified and stimuli can be applied from a comprehensive stimulus controller. Registers can be logged to files for further run-time analysis. The trace buffer and logic analyzer display extend the power of the simulator to record and track program execution, actions on I/O, most peripherals and internal registers. The MPLAB SIM Software Simulator fully supports symbolic debugging using the MPLAB C18 and MPLAB C30 C Compilers, and the MPASM and MPLAB ASM30 Assemblers. The software simulator offers the flexibility to develop and debug code outside of the hardware laboratory environment, making it an excellent, economical software development tool.
20.4
MPLINK Object Linker/ MPLIB Object Librarian
The MPLINK Object Linker combines relocatable objects created by the MPASM Assembler and the MPLAB C18 C Compiler. It can link relocatable objects from precompiled libraries, using directives from a linker script. The MPLIB Object Librarian manages the creation and modification of library files of precompiled code. When a routine from a library is called from a source file, only the modules that contain that routine will be linked in with the application. This allows large libraries to be used efficiently in many different applications. The object linker/library features include: * Efficient linking of single libraries instead of many smaller files * Enhanced code maintainability by grouping related modules together * Flexible creation of libraries with easy module listing, replacement, deletion and extraction
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20.7 MPLAB ICE 2000 High-Performance In-Circuit Emulator 20.9 MPLAB ICD 2 In-Circuit Debugger
Microchip's In-Circuit Debugger, MPLAB ICD 2, is a powerful, low-cost, run-time development tool, connecting to the host PC via an RS-232 or high-speed USB interface. This tool is based on the Flash PICmicro MCUs and can be used to develop for these and other PICmicro MCUs and dsPIC DSCs. The MPLAB ICD 2 utilizes the in-circuit debugging capability built into the Flash devices. This feature, along with Microchip's In-Circuit Serial ProgrammingTM (ICSPTM) protocol, offers cost-effective, in-circuit Flash debugging from the graphical user interface of the MPLAB Integrated Development Environment. This enables a designer to develop and debug source code by setting breakpoints, single stepping and watching variables, and CPU status and peripheral registers. Running at full speed enables testing hardware and applications in real time. MPLAB ICD 2 also serves as a development programmer for selected PICmicro devices.
The MPLAB ICE 2000 In-Circuit Emulator is intended to provide the product development engineer with a complete microcontroller design tool set for PICmicro microcontrollers. Software control of the MPLAB ICE 2000 In-Circuit Emulator is advanced by the MPLAB Integrated Development Environment, which allows editing, building, downloading and source debugging from a single environment. The MPLAB ICE 2000 is a full-featured emulator system with enhanced trace, trigger and data monitoring features. Interchangeable processor modules allow the system to be easily reconfigured for emulation of different processors. The architecture of the MPLAB ICE 2000 In-Circuit Emulator allows expansion to support new PICmicro microcontrollers. The MPLAB ICE 2000 In-Circuit Emulator system has been designed as a real-time emulation system with advanced features that are typically found on more expensive development tools. The PC platform and Microsoft(R) Windows(R) 32-bit operating system were chosen to best make these features available in a simple, unified application.
20.10 MPLAB PM3 Device Programmer
The MPLAB PM3 Device Programmer is a universal, CE compliant device programmer with programmable voltage verification at VDDMIN and VDDMAX for maximum reliability. It features a large LCD display (128 x 64) for menus and error messages and a modular, detachable socket assembly to support various package types. The ICSPTM cable assembly is included as a standard item. In Stand-Alone mode, the MPLAB PM3 Device Programmer can read, verify and program PICmicro devices without a PC connection. It can also set code protection in this mode. The MPLAB PM3 connects to the host PC via an RS-232 or USB cable. The MPLAB PM3 has high-speed communications and optimized algorithms for quick programming of large memory devices and incorporates an SD/MMC card for file storage and secure data applications.
20.8
MPLAB ICE 4000 High-Performance In-Circuit Emulator
The MPLAB ICE 4000 In-Circuit Emulator is intended to provide the product development engineer with a complete microcontroller design tool set for high-end PICmicro MCUs and dsPIC DSCs. Software control of the MPLAB ICE 4000 In-Circuit Emulator is provided by the MPLAB Integrated Development Environment, which allows editing, building, downloading and source debugging from a single environment. The MPLAB ICE 4000 is a premium emulator system, providing the features of MPLAB ICE 2000, but with increased emulation memory and high-speed performance for dsPIC30F and PIC18XXXX devices. Its advanced emulator features include complex triggering and timing, and up to 2 Mb of emulation memory. The MPLAB ICE 4000 In-Circuit Emulator system has been designed as a real-time emulation system with advanced features that are typically found on more expensive development tools. The PC platform and Microsoft Windows 32-bit operating system were chosen to best make these features available in a simple, unified application.
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20.11 PICSTART Plus Development Programmer
The PICSTART Plus Development Programmer is an easy-to-use, low-cost, prototype programmer. It connects to the PC via a COM (RS-232) port. MPLAB Integrated Development Environment software makes using the programmer simple and efficient. The PICSTART Plus Development Programmer supports most PICmicro devices in DIP packages up to 40 pins. Larger pin count devices, such as the PIC16C92X and PIC17C76X, may be supported with an adapter socket. The PICSTART Plus Development Programmer is CE compliant.
20.13 Demonstration, Development and Evaluation Boards
A wide variety of demonstration, development and evaluation boards for various PICmicro MCUs and dsPIC DSCs allows quick application development on fully functional systems. Most boards include prototyping areas for adding custom circuitry and provide application firmware and source code for examination and modification. The boards support a variety of features, including LEDs, temperature sensors, switches, speakers, RS-232 interfaces, LCD displays, potentiometers and additional EEPROM memory. The demonstration and development boards can be used in teaching environments, for prototyping custom circuits and for learning about various microcontroller applications. In addition to the PICDEMTM and dsPICDEMTM demonstration/development board series of circuits, Microchip has a line of evaluation kits and demonstration software for analog filter design, KEELOQ(R) security ICs, CAN, IrDA(R), PowerSmart(R) battery management, SEEVAL(R) evaluation system, Sigma-Delta ADC, flow rate sensing, plus many more. Check the Microchip web page (www.microchip.com) and the latest "Product Selector Guide" (DS00148) for the complete list of demonstration, development and evaluation kits.
20.12 PICkit 2 Development Programmer
The PICkitTM 2 Development Programmer is a low-cost programmer with an easy-to-use interface for programming many of Microchip's baseline, mid-range and PIC18F families of Flash memory microcontrollers. The PICkit 2 Starter Kit includes a prototyping development board, twelve sequential lessons, software and HI-TECH's PICC Lite C compiler, and is designed to help get up to speed quickly using PIC(R) microcontrollers. The kit provides everything needed to program, evaluate and develop applications using Microchip's powerful, mid-range Flash memory family of microcontrollers.
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21.0 ELECTRICAL CHARACTERISTICS
This section provides an overview of dsPIC30F electrical characteristics. Additional information will be provided in future revisions of this document as it becomes available. For detailed information about the dsPIC30F architecture and core, refer to "dsPIC30F Family Reference Manual" (DS70046). Absolute maximum ratings for the device family are listed below. Exposure to these maximum rating conditions for extended periods may affect device reliability. Functional operation of the device at these or any other conditions above the parameters indicated in the operation listings of this specification is not implied.
Absolute Maximum Ratings()
Ambient temperature under bias.............................................................................................................-40C to +125C Storage temperature .............................................................................................................................. -65C to +150C Voltage on any pin with respect to VSS (except VDD and MCLR)(1) ................................................ -0.3V to (VDD + 0.3V) Voltage on VDD with respect to VSS ......................................................................................................... -0.3V to +5.5V Voltage on MCLR with respect to VSS (1) ........................................................................................ -0.3V to (VDD + 0.3V) Maximum current out of VSS pin ...........................................................................................................................300 mA Maximum current into VDD pin(2) ...........................................................................................................................250 mA Input clamp current, IIK (VI < 0 or VI > VDD) .......................................................................................................... 20 mA Output clamp current, IOK (VO < 0 or VO > VDD) ...................................................................................................20 mA Maximum output current sunk by any I/O pin..........................................................................................................25 mA Maximum output current sourced by any I/O pin ....................................................................................................25 mA Maximum current sunk by all ports .......................................................................................................................200 mA Maximum current sourced by all ports(2)...............................................................................................................200 mA Note 1: Voltage spikes below VSS at the MCLR/VPP pin, inducing currents greater than 80 mA, may cause latch-up. Thus, a series resistor of 50-100 should be used when applying a "low" level to the MCLR/VPP pin, rather than pulling this pin directly to VSS. 2: Maximum allowable current is a function of device maximum power dissipation. See Table 21-2.
NOTICE:
Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operation listings of this specification is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability.
21.1
DC Characteristics
OPERATING MIPS VS. VOLTAGE
Max MIPS Temp Range dsPIC30FXXX-30I 4.5-5.5V 4.5-5.5V 3.0-3.6V 3.0-3.6V -40C to 85C -40C to 125C -40C to 85C -40C to 125C 30 -- 20 -- dsPIC30FXXX-20I 20 -- 15 -- dsPIC30FXXX-20E -- 20 -- 15
TABLE 21-1:
VDD Range
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TABLE 21-2: THERMAL OPERATING CONDITIONS
Rating dsPIC30F1010/202X-30I Operating Junction Temperature Range Operating Ambient Temperature Range dsPIC30F1010/202X-20I Operating Junction Temperature Range Operating Ambient Temperature Range dsPIC30F1010/202X-20E Operating Junction Temperature Range Operating Ambient Temperature Range Power Dissipation: Internal chip power dissipation: PINT = VDD x ( IDD - IOH) I/O Pin power dissipation: PI/O = ( { VDD - VOH } x IOH ) + ( VOL x I O L ) Maximum Allowed Power Dissipation PDMAX TJ TA -40 -40 +150 +125 C C TJ TA -40 -40 +150 +85 C C TJ TA -40 -40 +125 +85 C C Symbol Min Typ Max Unit
PD
PINT + PI/O
W
(TJ - TA) / JA
W
TABLE 21-3:
THERMAL PACKAGING CHARACTERISTICS
Characteristic Symbol Typ 48.3 33.7 42 28 39.3 Max Unit C/W C/W C/W C/W C/W Notes 1 1 1 1 1
Package Thermal Resistance, 28-pin SOIC (SO) Package Thermal Resistance, 28-pin QFN Package Thermal Resistance, 28-pin SPDIP (SP) Package Thermal Resistance, 44-pin QFN Package Thermal Resistance, 44-pin TQFP Note 1:
JA JA JA JA JA
Junction to ambient thermal resistance, Theta-ja (JA) numbers are achieved by package simulations.
TABLE 21-4:
DC TEMPERATURE AND VOLTAGE SPECIFICATIONS
Standard Operating Conditions: 3.3V and 5.0V (10%) (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended Characteristic Min Typ(1) Max Units Conditions
DC CHARACTERISTICS
Param No.
Symbol
Operating Voltage(2) DC10 DC11 DC12 DC16 VDD VDD VDR VPOR Supply Voltage Supply Voltage RAM Data Retention Voltage(3) VDD Start Voltage to ensure internal Power-on Reset signal VDD Rise Rate to ensure internal Power-on Reset signal 3.0 4.5 -- -- -- -- 1.5 VSS 5.5 5.5 -- -- V V V V Industrial temperature Extended temperature
DC17
SVDD
0.05
V/ms 0-5V in 0.1 sec 0-3V in 60 ms
Note 1: 2: 3:
Data in "Typ" column is at 5V, 25C unless otherwise stated. Parameters are for design guidance only and are not tested. These parameters are characterized but not tested in manufacturing. This is the limit to which VDD can be lowered without losing RAM data.
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TABLE 21-5: DC CHARACTERISTICS: OPERATING CURRENT (IDD)
Standard Operating Conditions: 3.3V and 5.0V (10%) (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended Max Units Conditions
DC CHARACTERISTICS
Parameter No.
Typical(1)
Operating Current (IDD)(2) DC20a 12 DC20b DC20c DC20e DC20f DC20g DC23a DC23b DC23c DC23e DC23f DC23g DC30a DC30b DC30c DC30e DC30f DC30g DC31a DC31b DC31c DC31e DC31f DC31g Note 1: 2: 14 -- 18 20 -- 45 48 -- 100 104 -- 18 20 -- 22 24 -- 45 48 -- 100 104
-- -- -- -- -- -- -- 81 -- -- 212 -- -- -- -- -- -- -- -- 81 -- -- 212
mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA
25C 85C 125C 25C 85C 125C 25C 85C 125C 25C 85C 125C 25C 85C 125C 25C 85C 125C 25C 85C 125C 25C 85C 3.3V FRC 20 MIPS, 32X PLL 3.3V FRC 7.3 MIPS 3.3V 20 MIPS, 32X PLL 3.3V FRC 4.9 MIPS
5V
FRC 4.9 MIPS
5V
30 MIPS, 32X PLL
5V
FRC 7.3 MIPS
5V
FRC 30 MIPS, 32X PLL
-- -- mA 125C Data in "Typical" column is at 5V, 25C unless otherwise stated. Parameters are for design guidance only and are not tested. The supply current is mainly a function of the operating voltage and frequency. Other factors such as I/O pin loading and switching rate, oscillator type, internal code execution pattern and temperature also have an impact on the current consumption. The test conditions for all IDD measurements are as follows: OSC1 driven with external square wave from rail to rail. All I/O pins are configured as Inputs and pulled to VDD. MCLR = VDD, WDT and FSCM are disabled. CPU, SRAM, Program Memory and Data Memory are operational. No peripheral modules are operating.
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TABLE 21-6: DC CHARACTERISTICS: IDLE CURRENT (IIDLE)
Standard Operating Conditions: 3.3V and 5.0V (10%) (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended Max Units Conditions
DC CHARACTERISTICS
Parameter No.
Typical(1)
Idle Current (IIDLE): Core OFF Clock ON Base Current(2) DC40a DC40b DC40c DC40e DC40f DC40g DC43a DC43b DC43c DC43e DC43f DC43g DC50a DC50b DC50c DC50e DC50f DC50g DC51a DC51b DC51c DC51e DC51f DC51g Note 1: 2: 9 -- -- 16 -- -- 23 -- -- 58 -- -- 13 -- -- 18 -- -- 23 -- -- 58 -- -- -- -- -- -- -- -- -- 46 -- -- 47 -- -- -- -- -- -- -- -- 46 -- -- 87 -- mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA 25C 85C 125C 25C 85C 125C 25C 85C 125C 25C 85C 125C 25C 85C 125C 25C 85C 125C 25C 85C 125C 25C 85C 125C 5V FRC 30 MIPS, 32X PLL 3.3V FRC 20 MIPS, 32X PLL 5V FRC 7.3 MIPS 3.3V FRC 7.3 MIPS 5V 30 MIPS, 32X PLL 3.3V 20 MIPS, 32X PLL 5V FRC 4.9 MIPSe 3.3V FRC 4.9 MIPS
Data in "Typical" column is at 5V, 25C unless otherwise stated. Parameters are for design guidance only and are not tested. Base IIDLE current is measured with Core off, Clock on and all modules turned off.
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TABLE 21-7: DC CHARACTERISTICS: POWER-DOWN CURRENT (IPD)
Standard Operating Conditions: 3.3V and 5.0V (10%) (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended Max Units Conditions
DC CHARACTERISTICS
Parameter No.
Typical(1)
Power-Down Current (IPD)(2) DC60a DC60b DC60c DC60e DC60f DC60g DC61a DC61b DC61c DC61e DC61f DC61g Note 1: 2: 3: 3 5 8 4 7 14 18 -- -- 35 -- -- -- -- -- -- -- -- -- -- -- -- -- -- A A A A A A A A A A A A 25C 85C 125C 25C 85C 125C 25C 85C 125C 25C 85C 125C 5V 3.3V Watchdog Timer Current: IWDT(3) 5V 3.3V Base Power-Down Current(3)
Data in the Typical column is at 5V, 25C unless otherwise stated. Parameters are for design guidance only and are not tested. Base IPD is measured with all peripherals and clocks shutdown. All I/Os are configured as inputs and pulled high. WDT, etc. are all switched off. The current is the additional current consumed when the module is enabled. This current should be added to the base IPD current.
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TABLE 21-8: DC CHARACTERISTICS: I/O PIN INPUT SPECIFICATIONS
Standard Operating Conditions: 3.3V and 5.0V (10%) (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended Characteristic Input Low Voltage(2) I/O pins: with Schmitt Trigger buffer MCLR OSC1 (in XT, HS and LP modes) OSC1 (in RC SDA, SCL SDA, SCL VIH DI20 DI25 DI26 DI27 DI28 DI29 IIL DI50 DI51 DI55 DI56 Note 1: 2: 3: 4: Input High Voltage(2) 0.8 VDD 0.8 VDD
(3)
DC CHARACTERISTICS
Param Symbol No. VIL DI10 DI15 DI16 DI17 DI18 DI19
Min
Typ(1)
Max
Units
Conditions
VSS VSS VSS VSS VSS VSS
-- -- -- -- -- --
0.2 VDD 0.2 VDD 0.2 VDD 0.3 VDD 0.3 VDD 0.2 VDD
V V V V V V SM bus disabled SM bus enabled
mode)(3)
I/O pins: with Schmitt Trigger buffer MCLR OSC1 (in RC mode) SDA, SCL SDA, SCL Input Leakage Current(2)(4)(5) I/O ports Analog input pins MCLR OSC1
-- -- -- -- -- -- 0.01 0.50 0.05 0.05
VDD VDD VDD VDD VDD VDD 1 -- 5 5
V V V V V V A A A A SM bus disabled SM bus enabled VSS VPIN VDD, Pin at high-impedance VSS VPIN VDD, Pin at high-impedance VSS VPIN VDD VSS VPIN VDD, XT, HS and LP Osc mode
OSC1 (in XT, HS and LP modes) 0.7 VDD 0.9 VDD 0.7 VDD 0.8 VDD -- -- -- --
5:
Data in "Typ" column is at 5V, 25C unless otherwise stated. Parameters are for design guidance only and are not tested. These parameters are characterized but not tested in manufacturing. In RC oscillator configuration, the OSC1/CLK1 pin is a Schmitt Trigger input. It is not recommended that the dsPIC30F device be driven with an external clock while in RC mode. The leakage current on the MCLR pin is strongly dependent on the applied voltage level. The specified levels represent normal operating conditions. Higher leakage current may be measured at different input voltages. Negative current is defined as current sourced by the pin.
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TABLE 21-9: DC CHARACTERISTICS: I/O PIN OUTPUT SPECIFICATIONS
Standard Operating Conditions: 3.3V and 5.0V (10%) (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended Characteristic Output Low Voltage(2) I/O ports OSC2/CLKOUT (RC or EC Osc mode) VOH DO20 DO26 Output High Voltage(2) I/O ports OSC2/CLKOUT (RC or EC Osc mode) Capacitive Loading Specs on Output Pins(2) DO50 COSC2 OSC2 pin -- -- 15 pF In XTL, XT, HS and LP modes when external clock is used to drive OSC1. RC or EC Osc mode In I2C mode VDD - 0.7 TBD VDD - 0.7 TBD -- -- -- -- -- -- -- -- V V V V IOH = -3.0 mA, VDD = 5V IOH = -2.0 mA, VDD = 3V IOH = -1.3 mA, VDD = 5V IOH = -2.0 mA, VDD = 3V -- -- DO16 -- -- -- -- -- -- 0.6 TBD 0.6 TBD V V V V IOL = 8.5 mA, VDD = 5V IOL = 2.0 mA, VDD = 3V IOL = 1.6 mA, VDD = 5V IOL = 2.0 mA, VDD = 3V Min Typ(1) Max Units Conditions
DC CHARACTERISTICS
Param Symbol No. VOL DO10
DO56 DO58
CIO CB
All I/O pins and OSC2 SCL, SDA
-- --
-- --
50 400
pF pF
Legend: TBD = To Be Determined Note 1: Data in "Typ" column is at 5V, 25C unless otherwise stated. Parameters are for design guidance only and are not tested. 2: These parameters are characterized but not tested in manufacturing.
TABLE 21-10: DC CHARACTERISTICS: PROGRAM AND EEPROM
DC CHARACTERISTICS Standard Operating Conditions: 3.3V and 5.0V (10%) (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended Characteristic Program Flash Memory(2) D130 D131 D132 D133 D134 D135 D136 D137 D138 Note 1: 2: EP VPR VEB VPEW TPEW TRETD TEB IPEW IEB Cell Endurance VDD for Read VDD for Bulk Erase VDD for Erase/Write Erase/Write Cycle Time Characteristic Retention ICSP Block Erase Time IDD During Programming IDD During Programming 10K VMIN 4.5 3.0 -- 40 -- -- -- 100K -- -- -- 2 100 4 10 10 -- 5.5 5.5 5.5 -- -- -- 30 30 E/W V V V ms Year ms mA mA Row Erase Bulk Erase Provided no other specifications are violated -40C TA +85C VMIN = Minimum operating voltage Min Typ(1) Max Units Conditions
Param Symbol No.
Data in "Typ" column is at 5V, 25C unless otherwise stated. These parameters are characterized but not tested in manufacturing.
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21.2 AC Characteristics and Timing Parameters
The information contained in this section defines dsPIC30F AC characteristics and timing parameters.
TABLE 21-11: TEMPERATURE AND VOLTAGE SPECIFICATIONS - AC
Standard Operating Conditions: 3.3V and 5.0V (10%) (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended Operating voltage VDD range as described in DC Spec Section 21.0.
AC CHARACTERISTICS
FIGURE 21-1:
LOAD CONDITIONS FOR DEVICE TIMING SPECIFICATIONS
Load Condition 1 - for all pins except OSC2 VDD/2 CL VSS Pin VSS CL RL = 464 CL = 50 pF for all pins except OSC2 5 pF for OSC2 output Load Condition 2 - for OSC2
RL
Pin
FIGURE 21-2:
EXTERNAL CLOCK TIMING
Q4 Q1 Q2 Q3 Q4 Q1
OSC1
OS20 OS30 OS25 OS30 OS31 OS31
CLKOUT
OS40 OS41
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TABLE 21-12: EXTERNAL CLOCK TIMING REQUIREMENTS
AC CHARACTERISTICS Standard Operating Conditions: 3.3V and 5.0V (10%) (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended Characteristic External CLKI Frequency(2) (External clocks allowed only in EC mode) Oscillator Frequency(2) OS20 OS25 OS30 OS31 OS40 OS41 Note 1: 2: 3: TOSC TCY TosL, TosH TosR, TosF TckR TckF TOSC = 1/FOSC Instruction Cycle Time(2)(3) External Clock in (OSC1) High or Low Time External Clock(2) in (OSC1) Rise or Fall Time CLKOUT Rise Time(2)(4) CLKOUT Fall Time
(2)(4) (2)
Param Symbol No. OS10 FOSC
Min 9.55 9.55 9.55 9.55 -- 33 .45 x TOSC -- -- --
Typ(1) -- -- -- -- -- -- -- -- 6 6
Max 15.00 15.00 15.00 15.00 -- DC -- 20 10 10
Units MHz MHz MHz MHz -- ns ns ns ns ns EC EC
Conditions EC EC with 32x PLL HS FRC internal See parameter OS10 for FOSC value
4:
Data in "Typ" column is at 5V, 25C unless otherwise stated. Parameters are for design guidance only and are not tested. These parameters are characterized but not tested in manufacturing. Instruction cycle period (TCY) equals four times the input oscillator time base period. All specified values are based on characterization data for that particular oscillator type under standard operating conditions with the device executing code. Exceeding these specified limits may result in an unstable oscillator operation and/or higher than expected current consumption. All devices are tested to operate at "min." values with an external clock applied to the OSC1/CLK1 pin. When an external clock input is used, the "Max." cycle time limit is "DC" (no clock) for all devices. Measurements are taken in EC or ERC modes. The CLKOUT signal is measured on the OSC2 pin. CLKOUT is low for the Q1-Q2 period (1/2 TCY) and high for the Q3-Q4 period (1/2 TCY).
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TABLE 21-13: PLL CLOCK TIMING SPECIFICATIONS (VDD = 3.0 AND 5.0V )
AC CHARACTERISTICS Standard Operating Conditions: 3.3V and 5.0V (10%) (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended Characteristic(1) PLL Input Frequency Range(2) On-chip PLL Output(2) PLL Start-up Time (Lock Time) CLKOUT Stability (Jitter) Min 9.55 305 -- TBD Typ(2) -- -- 20 1 Max 15 480 50 TBD Units MHz MHz s % Measured over 100 ms period Conditions EC, HS modes with PLL x32 EC, HS modes with PLL x32
Param No. OS50 OS51 OS52 OS53
Symbol FPLLI FSYS TLOC DCLK
Legend: TBD = To Be Determined Note 1: These parameters are characterized but not tested in manufacturing. 2: Data in "Typ" column is at 5V, 25C unless otherwise stated. Parameters are for design guidance only and are not tested.
TABLE 21-14: INTERNAL CLOCK TIMING EXAMPLES
Clock Oscillator Mode EC HS Note 1: 2: 3: 4: FOSC (MHz)(1) 10 15 10 15 TCY (sec)(2) 0.2 0.133 0.2 0.133 MIPS(3) w/o PLL 5.0 7.5 5.0 7.5 MIPS(4) w/PLL x32 20 30 20 30
Assumption: Oscillator Postscaler is divide by 1. Instruction Execution Cycle Time: TCY = 1 / MIPS. Instruction Execution Frequency without PLL: MIPS = FOSC / 2 (since there are 2 Q clocks per instruction cycle). Instruction Execution Frequency with PLL: MIPS = (FOSC * 2).
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TABLE 21-15: AC CHARACTERISTICS: INTERNAL RC ACCURACY
AC CHARACTERISTICS Standard Operating Conditions: 3.3V and 5.0V ( 10%) (unless otherwise stated) Operating temperature -40C TA +85C for industrial -40C TA +125C for Extended Min Typ Max Units Conditions
Param No.
Characteristic
Internal FRC Accuracy @ FRC Freq = 9.7 MHz(1) FRC TBD TBD TBD TBD TBD Internal FRC Accuracy @ FRC Freq = 14.55 MHz(1) FRC TBD TBD TBD TBD TBD % % % % % +25C +25C -40C TA +85C -40C TA +125C -40C TA +85C VDD = 3.0-3.6V VDD = 4.5-5.5V VDD = 3.0-3.6V VDD = 4.5-5.5V VDD = 4.5-5.5V % % % % % +25C +25C -40C TA +85C -40C TA +85C -40C TA +125C VDD = 3.0-3.6V VDD = 4.5-5.5V VDD = 3.0-3.6V VDD = 4.5-5.5V VDD = 4.5-5.5V
Legend: TBD = To Be Determined Note 1: Frequency calibrated at 25C and 5V. TUN bits can be used to compensate for temperature drift.
TABLE 21-16: AC CHARACTERISTICS: INTERNAL RC JITTER
AC CHARACTERISTICS Standard Operating Conditions: 3.3V and 5.0V (10%) (unless otherwise stated) Operating temperature -40C TA +85C for industrial -40C TA +125C for Extended Min Typ Max Units Conditions
Param No.
Characteristic
Internal FRC Jitter @ FRC Freq = 9.7 MHz(1) FRC TBD TBD TBD TBD TBD Internal FRC Jitter @ FRC Freq = 14.55 MHz(1) FRC TBD TBD TBD TBD TBD % % % % % +25C +25C -40C TA +85C -40C TA +125C -40C TA +85C VDD = 3.0-3.6V VDD = 4.5-5.5V VDD = 3.0-3.6V VDD = 4.5-5.5V VDD = 4.5-5.5V % % % % % +25C +25C -40C TA +85C -40C TA +125C -40C TA +85C VDD = 3.0-3.6V VDD = 4.5-5.5V VDD = 3.0-3.6V VDD = 4.5-5.5V VDD = 4.5-5.5V
Legend: TBD = To Be Determined Note 1: Frequency calibrated at 25C and 5V. TUN bits can be used to compensate for temperature drift.
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FIGURE 21-3: CLKOUT AND I/O TIMING CHARACTERISTICS
I/O Pin (Input) DI35 DI40 I/O Pin (Output) Old Value DO31 DO32 Note: Refer to Figure 21-1 for load conditions. New Value
TABLE 21-17: CLKOUT AND I/O TIMING REQUIREMENTS
AC CHARACTERISTICS Standard Operating Conditions: 3.3V and 5.0V (10%) (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended Characteristic(1)(2)(3) Port output rise time Port output fall time INTx pin high or low time (output) CNx high or low time (input) Min -- -- 20 2 TCY Typ(4) 10 10 -- -- Max 25 25 -- -- Units ns ns ns ns Conditions -- -- -- --
Param No. DO31 DO32 DI35 DI40 Note 1: 2: 3: 4:
Symbol TIOR TIOF TINP TRBP
These parameters are asynchronous events not related to any internal clock edges Measurements are taken in RC mode and EC mode where CLKOUT output is 4 x TOSC. These parameters are characterized but not tested in manufacturing. Data in "Typ" column is at 5V, 25C unless otherwise stated.
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FIGURE 21-4: RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER AND POWER-UP TIMER TIMING CHARACTERISTICS
VDD MCLR Internal POR
SY12
SY10
SY11 PWRT Time-out OSC Time-out Internal Reset Watchdog Timer Reset SY13 I/O Pins SY35 FSCM Delay Note: Refer to Figure 21-1 for load conditions. SY20 SY13 SY30
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TABLE 21-18: RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER, POWER-UP TIMER AND TIMING REQUIREMENTS
AC CHARACTERISTICS Standard Operating Conditions: 3.3V and 5.0V (10%) (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended Characteristic(1) MCLR Pulse Width (low) Power-up Timer Period Min 2 TBD TBD TBD TBD 3 -- 1.6 1.7 Oscillation Start-up Timer Period Fail-Safe Clock Monitor Delay -- -- Typ(2) -- 0 4 16 64 10 0.8 2.2 2.2 1024 TOSC 500 Max -- TBD TBD TBD TBD 30 1.0 3.0 3.1 -- -- Units s ms Conditions -40C to +85C -40C to +85C User programmable
Param Symbol No. SY10 SY11 TmcL TPWRT
SY12 SY13 SY20
TPOR TIOZ TWDT1 TWDT2
Power-On Reset Delay I/O High-impedance from MCLR Low or Watchdog Timer Reset Watchdog Timer Time-out Period (No Prescaler)
s s ms ms -- s
-40C to +85C
VDD = 5V, -40C to +85C VDD = 3V, -40C to +85C TOSC = OSC1 period -40C to +85C
SY30 SY35
TOST TFSCM
Legend: TBD = To Be Determined Note 1: These parameters are characterized but not tested in manufacturing. 2: Data in "Typ" column is at 5V, 25C unless otherwise stated.
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FIGURE 21-5: BAND GAP START-UP TIME CHARACTERISTICS
VBGAP 0V Enable Band Gap (see Note) SY40 Band Gap Stable
Note: Band Gap is enabled when FBORPOR<7> is set.
TABLE 21-19: BAND GAP START-UP TIME REQUIREMENTS
AC CHARACTERISTICS Standard Operating Conditions: 3.3V and 5.0V (10%) (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended Min -- Typ(2) 40 Max 65 Units s Conditions Defined as the time between the instant that the band gap is enabled and the moment that the band gap reference voltage is stable. RCON<13> status bit.
Param No. SY40
Symbol TBGAP
Characteristic(1) Band Gap Start-up Time
Note 1: 2:
These parameters are characterized but not tested in manufacturing. Data in "Typ" column is at 5V, 25C unless otherwise stated.
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FIGURE 21-6: TIMER EXTERNAL CLOCK TIMING CHARACTERISTICS
TxCK Tx10 Tx15
OS60
Tx11 Tx20
TMRX
Note: "x" refers to Timer Type A or Timer Type B. Refer to Figure 21-1 for load conditions.
TABLE 21-20: TIMER1 EXTERNAL CLOCK TIMING REQUIREMENTS
AC CHARACTERISTICS Standard Operating Conditions: 3.3V and 5.0V (10%) (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended Characteristic TxCK High Time Synchronous, no prescaler Synchronous, with prescaler Asynchronous TA11 TTXL TxCK Low Time Synchronous, no prescaler Synchronous, with prescaler Asynchronous TA15 TTXP TxCK Input Period Synchronous, no prescaler Synchronous, with prescaler Asynchronous OS60 Ft1 SOSC1/T1CK oscillator input frequency range (oscillator enabled by setting bit TCS (T1CON, bit 1)) Min 0.5 TCY + 20 10 10 0.5 TCY + 20 10 10 TCY + 10 Greater of: 20 ns or (TCY + 40)/N 20 DC Typ -- -- -- -- -- -- -- -- Max -- -- -- -- -- -- -- -- Units ns ns ns ns ns ns ns -- N = prescale value (1, 8, 64, 256) Must also meet parameter TA15 Conditions Must also meet parameter TA15
Param No. TA10
Symbol TTXH
-- --
-- 50
ns kHz
TA20
TCKEXTMRL Delay from External TxCK Clock Edge to Timer Increment
0.5 TCY
1.5 TCY
--
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TABLE 21-21: TIMER2 EXTERNAL CLOCK TIMING REQUIREMENTS
AC CHARACTERISTICS Standard Operating Conditions: 3.3V and 5.0V (10%) (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended Characteristic TxCK High Time Synchronous, no prescaler Synchronous, with prescaler TB11 TtxL TxCK Low Time Synchronous, no prescaler Synchronous, with prescaler TB15 TtxP TxCK Input Period Synchronous, no prescaler Synchronous, with prescaler TB20 TCKEXTMRL Delay from External TxCK Clock Edge to Timer Increment Min 0.5 TCY + 20 10 0.5 TCY + 20 10 TCY + 10 Greater of: 20 ns or (TCY + 40) / N 0.5 TCY -- 1.5 TCY -- Typ -- -- -- -- -- Max -- -- -- -- -- Units ns ns ns ns ns N = prescale value (1, 8, 64, 256) Must also meet parameter TB15 Conditions Must also meet parameter TB15
Param No. TB10
Symbol TtxH
TABLE 21-22: TIMER3 EXTERNAL CLOCK TIMING REQUIREMENTS
AC CHARACTERISTICS Standard Operating Conditions: 3.3V and 5.0V (10%) (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended Characteristic TxCK High Time TxCK Low Time Synchronous Synchronous Min 0.5 TCY + 20 0.5 TCY + 20 TCY + 10 Greater of: 20 ns or (TCY + 40) / N 0.5 TCY -- 1.5 TCY -- Typ -- -- -- Max -- -- -- Units ns ns ns Conditions Must also meet parameter TC15 Must also meet parameter TC15 N = prescale value (1, 8, 64, 256)
Param No. TC10 TC11 TC15
Symbol TtxH TtxL TtxP
TxCK Input Period Synchronous, no prescaler Synchronous, with prescaler
TC20
TCKEXTMRL Delay from External TxCK Clock Edge to Timer Increment
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FIGURE 21-7: INPUT CAPTURE (CAPx) TIMING CHARACTERISTICS
ICX
IC10 IC15 Note: Refer to Figure 21-1 for load conditions.
IC11
TABLE 21-23: INPUT CAPTURE TIMING REQUIREMENTS
AC CHARACTERISTICS Standard Operating Conditions: 3.3V and 5.0V (10%) (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended Characteristic(1) ICx Input Low Time ICx Input High Time ICx Input Period No Prescaler With Prescaler IC11 IC15 Note 1: TccH TccP No Prescaler With Prescaler Min 0.5 TCY + 20 10 0.5 TCY + 20 10 (2 TCY + 40) / N Max -- -- -- -- -- Units ns ns ns ns ns N = prescale value (1, 4, 16) Conditions
Param No. IC10
Symbol TccL
These parameters are characterized but not tested in manufacturing.
FIGURE 21-8:
OUTPUT COMPARE MODULE (OCx) TIMING CHARACTERISTICS
OCx (Output Compare or PWM Mode)
OC11
OC10
Note: Refer to Figure 21-1 for load conditions.
TABLE 21-24: OUTPUT COMPARE MODULE TIMING REQUIREMENTS
AC CHARACTERISTICS Standard Operating Conditions: 3.3V and 5.0V (10%) (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended Min -- -- Typ(2) -- -- Max -- -- Units ns ns Conditions See parameter D032 See parameter D031
Param Symbol No. OC10 OC11 Note 1: 2: TccF TccR
Characteristic(1) OCx Output Fall Time OCx Output Rise Time
These parameters are characterized but not tested in manufacturing. Data in "Typ" column is at 5V, 25C unless otherwise stated. Parameters are for design guidance only and are not tested.
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FIGURE 21-9: OC/PWM MODULE TIMING CHARACTERISTICS
OC20 OCFA/OCFB OC15 OCx
TABLE 21-25: SIMPLE OC/PWM MODE TIMING REQUIREMENTS
AC CHARACTERISTICS Standard Operating Conditions: 3.3V and 5.0V (10%) (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended Min -- -- Typ(2) -- -- Max 25 TBD 50 TBD Units ns ns ns ns VDD = 3V VDD = 5V VDD = 3V VDD = 5V -40C to +85C Conditions -40C to +85C
Param Symbol No. OC15 TFD OC20 TFLT
Characteristic(1) Fault Input to PWM I/O Change Fault Input Pulse Width
Legend: TBD = To Be Determined Note 1: These parameters are characterized but not tested in manufacturing. 2: Data in "Typ" column is at 5V, 25C unless otherwise stated. Parameters are for design guidance only and are not tested.
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FIGURE 21-10: SMPS PWM MODULE FAULT TIMING CHARACTERISTICS
MP30 FLTA/B MP20 PWMx
FIGURE 21-11:
MOTOR CONTROL PWM MODULE TIMING CHARACTERISTICS
MP11 MP10
PWMx Note: Refer to Figure 21-1 for load conditions.
TABLE 21-26: MOTOR CONTROL PWM MODULE TIMING REQUIREMENTS
AC CHARACTERISTICS Standard Operating Conditions: 3.3V and 5.0V (10%) (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended Min -- -- -- -- -- -- Typ(2) 10 10 TBD TBD -- -- Max 25 25 TBD TBD 25 TBD 50 TBD Units ns ns ns ns ns ns ns ns VDD = 5V VDD = 5V VDD = 3V VDD = 3V VDD = 3V VDD = 5V VDD = 3V VDD = 5V -40C to +85C Conditions -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C
Param No. MP10 MP11 MP12 MP13 MP20 MP30
Symbol TFPWM TRPWM TFPWM TRPWM TFD TFH
Characteristic(1) PWM Output Fall Time PWM Output Rise Time PWM Output Fall Time PWM Output Rise Time Fault Input to PWM I/O Change Minimum Pulse Width
Legend: TBD = To Be Determined Note 1: These parameters are characterized but not tested in manufacturing. 2: Data in "Typ" column is at 5V, 25C unless otherwise stated. Parameters are for design guidance only and are not tested.
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FIGURE 21-12:
SCKx (CKP = 0) SP11 SCKx (CKP = 1) SP35 SP20 SP21 SP10
SPI MODULE MASTER MODE (CKE = 0) TIMING CHARACTERISTICS
SP21
SP20
SDOx SP31 SDIx
MSb
BIT14 - - - - - -1 SP30 BIT14 - - - -1
LSb
MSb IN SP40 SP41
LSb IN
Note: Refer to Figure 21-1 for load conditions.
TABLE 21-27: SPI MASTER MODE (CKE = 0) TIMING REQUIREMENTS
AC CHARACTERISTICS Standard Operating Conditions: 3.3V and 5.0V (10%) (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended Characteristic(1) SCKX Output Low Time(3) SCKX Output High Time(3) SCKX Output Fall Time(4) SCKX Output Rise Time(4) SDOX Data Output Fall Time(4) SDOX Data Output Rise Time SDOX Data Output Valid after SCKX Edge Setup Time of SDIX Data Input to SCKX Edge Hold Time of SDIX Data Input to SCKX Edge
(4)
Para m No.
Symbol
Min TCY / 2 TCY / 2 -- -- -- -- -- 20 20
Typ(2) -- -- -- -- -- -- -- -- --
Max -- -- -- -- -- -- 30 -- --
Units ns ns ns ns ns ns ns ns ns
Conditions -- -- See parameter D032 See parameter D031 See parameter D032 See parameter D031 -- -- --
SP10 TscL SP11 TscH SP20 TscF SP21 TscR SP30 TdoF SP31 TdoR SP35 TscH2doV, TscL2doV SP40 TdiV2scH, TdiV2scL SP41 TscH2diL, TscL2diL Note 1: 2: 3: 4:
These parameters are characterized but not tested in manufacturing. Data in "Typ" column is at 5V, 25C unless otherwise stated. Parameters are for design guidance only and are not tested. The minimum clock period for SCK is 100 ns. Therefore, the clock generated in Master mode must not violate this specification. Assumes 50 pF load on all SPI pins.
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FIGURE 21-13: SPI MODULE MASTER MODE (CKE =1) TIMING CHARACTERISTICS
SP36 SCKX (CKP = 0) SP11 SP10 SP21 SP20
SCKX (CKP = 1) SP35 SP20 SP21
SDOX
MSb SP40
BIT14 - - - - - -1 SP30,SP31 BIT14 - - - -1
LSb
SDIX
MSb IN SP41
LSb IN
Note: Refer to Figure 21-1 for load conditions.
TABLE 21-28: SPI MODULE MASTER MODE (CKE = 1) TIMING REQUIREMENTS
AC CHARACTERISTICS Standard Operating Conditions: 3.3V and 5.0V (10%) (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended Characteristic(1) SCKX output low time(3) SCKX output high time(3) SCKX output fall time(4) time(4) SCKX output rise time(4) SDOX data output fall SDOX data output rise time(4) Min TCY / 2 TCY / 2 -- -- -- -- -- 30 20 20 Typ(2) -- -- -- -- -- -- -- -- -- -- Max -- -- -- -- -- -- 30 -- -- -- Units ns ns ns ns ns ns ns ns ns ns Conditions -- -- See parameter D032 See parameter D031 See parameter D032 See parameter D031 -- -- -- --
Param No. SP10 SP11 SP20 SP21 SP30 SP31 SP35 SP36 SP40 SP41 Note 1: 2: 3: 4:
Symbol TscL TscH TscF TscR TdoF TdoR
TscH2doV, SDOX data output valid after TscL2doV SCKX edge TdoV2sc, SDOX data output setup to TdoV2scL first SCKX edge TdiV2scH, Setup time of SDIX data input TdiV2scL to SCKX edge TscH2diL, TscL2diL Hold time of SDIX data input to SCKX edge
These parameters are characterized but not tested in manufacturing. Data in "Typ" column is at 5V, 25C unless otherwise stated. Parameters are for design guidance only and are not tested. The minimum clock period for SCK is 100 ns. Therefore, the clock generated in Master mode must not violate this specification. Assumes 50 pF load on all SPI pins.
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FIGURE 21-14:
SSX SP50 SCKX (CKP = 0) SP71 SP70 SP73 SP72 SP52
SPI MODULE SLAVE MODE (CKE = 0) TIMING CHARACTERISTICS
SCKX (CKP = 1) SP72 SP35 SDOX MSb BIT14 - - - - - -1 SP30,SP31 SDIX SDI MSb IN SP41 SP40 BIT14 - - - -1 LSb IN LSb SP51 SP73
Note: Refer to Figure 21-1 for load conditions.
TABLE 21-29: SPI MODULE SLAVE MODE (CKE = 0) TIMING REQUIREMENTS
AC CHARACTERISTICS Standard Operating Conditions: 3.3V and 5.0V (10%) (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended Characteristic(1) SCKX Input Low Time SCKX Input High Time SCKX Input Fall Time(3) SCKX Input Rise Time(3) SDOX Data Output Fall Time(3) SDOX Data Output Rise Time(3) SDOX Data Output Valid after SCKX Edge Setup Time of SDIX Data Input to SCKX Edge Hold Time of SDIX Data Input to SCKX Edge Min 30 30 -- -- -- -- -- 20 20 120 10 Typ(2) -- -- 10 10 -- -- -- -- -- -- -- Max -- -- 25 25 -- -- 30 -- -- -- 50 Units ns ns ns ns ns ns ns ns ns ns ns Conditions -- -- -- -- See parameter D032 See parameter D031 -- -- -- -- --
Param No. SP70 SP71 SP72 SP73 SP30 SP31 SP35 SP40 SP41 SP50 SP51 SP52 Note 1: 2: 3:
Symbol TscL TscH TscF TscR TdoF TdoR TscH2doV, TscL2doV TdiV2scH, TdiV2scL TscH2diL, TscL2diL
TssL2scH, SSX to SCKX or SCKX Input TssL2scL TssH2doZ SSX to SDOX Output High-impedance(3)
1.5 TCY -- -- ns -- TscH2ssH SSX after SCK Edge + 40 TscL2ssH These parameters are characterized but not tested in manufacturing. Data in "Typ" column is at 5V, 25C unless otherwise stated. Parameters are for design guidance only and are not tested. Assumes 50 pF load on all SPI pins.
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FIGURE 21-15:
SSX SP50 SCKX (CKP = 0) SP71 SCKX (CKP = 1) SP35 SP52 SDOX MSb BIT14 - - - - - -1 SP30,SP31 SDIX SDI MSb IN SP41 SP40 BIT14 - - - -1 LSb IN SP72 LSb SP51 SP73 SP70 SP73 SP72 SP52
SPI MODULE SLAVE MODE (CKE = 1) TIMING CHARACTERISTICS
SP60
Note: Refer to Figure 21-1 for load conditions.
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TABLE 21-30: SPI MODULE SLAVE MODE (CKE = 1) TIMING REQUIREMENTS
AC CHARACTERISTICS Standard Operating Conditions: 3.3V and 5.0V (10%) (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended Characteristic(1) SCKX Input Low Time SCKX Input High Time SCKX Input Fall Time(3) SCKX Input Rise Time(3) SDOX Data Output Fall Time
(3)
Param No. SP70 SP71 SP72 SP73 SP30 SP31 SP35 SP40 SP41 SP50 SP51 SP52 SP60 Note 1: 2: 3: 4:
Symbol TscL TscH TscF TscR TdoF TdoR
Min 30 30 -- -- -- -- -- 20 20 120 10 1.5 TCY + 40 --
Typ(2) -- -- 10 10 -- -- -- -- -- -- -- -- --
Max -- -- 25 25 -- -- 30 -- -- -- 50 -- 50
Units ns ns ns ns ns ns ns ns ns ns ns ns ns
Conditions -- -- -- -- See parameter D032 See parameter D031 -- -- -- -- -- -- --
SDOX Data Output Rise Time(3)
TscH2doV, SDOX Data Output Valid after TscL2doV SCKX Edge TdiV2scH, Setup Time of SDIX Data Input TdiV2scL to SCKX Edge TscH2diL, Hold Time of SDIX Data Input TscL2diL to SCKX Edge TssL2scH, SSX to SCKX or SCKX input TssL2scL TssH2doZ SS to SDOX Output High-impedance(4) TscH2ssH SSX after SCKX Edge TscL2ssH TssL2doV SDOX Data Output Valid after SSX Edge
These parameters are characterized but not tested in manufacturing. Data in "Typ" column is at 5V, 25C unless otherwise stated. Parameters are for design guidance only and are not tested. The minimum clock period for SCK is 100 ns. Therefore, the clock generated in Master mode must not violate this specification. Assumes 50 pF load on all SPI pins.
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FIGURE 21-16: I2CTM BUS START/STOP BITS TIMING CHARACTERISTICS (MASTER MODE)
SCL
IM30
IM31 IM33
IM34
SDA
Start Condition Note: Refer to Figure 21-1 for load conditions.
Stop Condition
FIGURE 21-17:
I2CTM BUS DATA TIMING CHARACTERISTICS (MASTER MODE)
IM20 IM11 IM10 IM21
SCL
IM11 IM10 IM26 IM25 IM33
SDA In
IM40 IM40 IM45
SDA Out Note: Refer to Figure 21-1 for load conditions.
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TABLE 21-31: I2CTM BUS DATA TIMING REQUIREMENTS (MASTER MODE)
AC CHARACTERISTICS Standard Operating Conditions: 3.3V and 5.0V (10%) (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended Characteristic Min(1) TCY / 2 (BRG + 1) TCY / 2 (BRG + 1) TCY / 2 (BRG + 1) TCY / 2 (BRG + 1) TCY / 2 (BRG + 1) TCY / 2 (BRG + 1) -- 20 + 0.1 CB -- -- 20 + 0.1 CB -- 250 100 TBD 0 0 TBD TCY / 2 (BRG + 1) TCY / 2 (BRG + 1) TCY / 2 (BRG + 1) TCY / 2 (BRG + 1) TCY / 2 (BRG + 1) TCY / 2 (BRG + 1) TCY / 2 (BRG + 1) TCY / 2 (BRG + 1) TCY / 2 (BRG + 1) TCY / 2 (BRG + 1) TCY / 2 (BRG + 1) TCY / 2 (BRG + 1) -- -- -- 4.7 1.3 TBD -- Max -- -- -- -- -- -- 300 300 100 1000 300 300 -- -- -- -- 0.9 -- -- -- -- -- -- -- -- -- -- -- -- -- 3500 1000 -- -- -- -- 400 Units s s s s s s ns ns ns ns ns ns ns ns ns ns s ns s s s s s s s s s ns ns ns ns ns ns s s s pF -- -- -- Time the bus must be free before a new transmission can start -- Only relevant for repeated Start condition After this period the first clock pulse is generated -- -- -- CB is specified to be from 10 to 400 pF Conditions -- -- -- -- -- -- CB is specified to be from 10 to 400 pF
Param Symbol No. IM10
TLO:SCL Clock Low Time 100 kHz mode 400 kHz mode 1 MHz mode
(2)
IM11
THI:SCL
Clock High Time 100 kHz mode 400 kHz mode 1 MHz mode(2)
IM20
TF:SCL
SDA and SCL Fall Time
100 kHz mode 400 kHz mode 1 MHz mode
(2)
IM21
TR:SCL
SDA and SCL Rise Time
100 kHz mode 400 kHz mode 1 MHz mode(2) 100 kHz mode 400 kHz mode 1 MHz mode(2) 100 kHz mode 400 kHz mode 1 MHz mode(2) 100 kHz mode 400 kHz mode 1 MHz mode(2) 100 kHz mode 400 kHz mode 1 MHz mode(2) 100 kHz mode 400 kHz mode 1 MHz mode(2) 100 kHz mode 400 kHz mode 1 MHz mode(2) 100 kHz mode 400 kHz mode 1 MHz mode(2) 100 kHz mode 400 kHz mode 1 MHz mode(2)
IM25
TSU:DAT Data Input Setup Time
IM26
THD:DAT Data Input Hold Time
IM30
TSU:STA
Start Condition Setup Time
IM31
THD:STA Start Condition Hold Time
IM33
TSU:STO Stop Condition Setup Time
IM34
THD:STO Stop Condition Hold Time
IM40
TAA:SCL
Output Valid From Clock
IM45
TBF:SDA Bus Free Time
IM50
CB
Bus Capacitive Loading
Legend: TBD = To Be Determined Note 1: BRG is the value of the I2CTM Baud Rate Generator. Refer to Section 21 "Inter-Integrated CircuitTM (I2C)" in the "dsPIC30F Family Reference Manual" (DS70046). 2: Maximum pin capacitance = 10 pF for all I2C pins (for 1 MHz mode only).
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FIGURE 21-18: I2CTM BUS START/STOP BITS TIMING CHARACTERISTICS (SLAVE MODE)
SCL
IS30
IS31 IS33
IS34
SDA
Start Condition
Stop Condition
FIGURE 21-19:
I2CTM BUS DATA TIMING CHARACTERISTICS (SLAVE MODE)
IS20 IS11 IS10 IS21
SCL
IS30 IS31 IS26 IS25 IS33
SDA In
IS40 IS40 IS45
SDA Out
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TABLE 21-32: I2CTM BUS DATA TIMING REQUIREMENTS (SLAVE MODE)
AC CHARACTERISTICS Standard Operating Conditions: 3.3V and 5.0V (10%) (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended Characteristic Clock Low Time 100 kHz mode 400 kHz mode 1 MHz mode(1) 100 kHz mode 400 kHz mode 1 MHz mode(1) 100 kHz mode 400 kHz mode 1 MHz mode(1) 100 kHz mode 400 kHz mode 1 MHz mode(1) 100 kHz mode 400 kHz mode 1 MHz mode(1) 100 kHz mode 400 kHz mode 1 MHz mode(1) 100 kHz mode 400 kHz mode Min 4.7 1.3 0.5 4.0 0.6 0.5 -- 20 + 0.1 CB -- -- 20 + 0.1 CB -- 250 100 100 0 0 0 4.7 0.6 0.25 4.0 0.6 0.25 4.7 0.6 0.6 4000 600 250 0 0 0 4.7 1.3 0.5 -- Max -- -- -- -- -- -- 300 300 100 1000 300 300 -- -- -- -- 0.9 0.3 -- -- -- -- -- -- -- -- -- -- -- 3500 1000 350 -- -- -- 400 Units s s s s s s ns ns ns ns ns ns ns ns ns ns s s s s s s s s s s s ns ns ns ns ns ns s s s pF Conditions Device must operate at a minimum of 1.5 MHz Device must operate at a minimum of 10 MHz. -- Device must operate at a minimum of 1.5 MHz Device must operate at a minimum of 10 MHz -- CB is specified to be from 10 to 400 pF CB is specified to be from 10 to 400 pF --
Param No. IS10
Symbol TLO:SCL
IS11
THI:SCL
Clock High Time
IS20
TF:SCL
SDA and SCL Fall Time SDA and SCL Rise Time Data Input Setup Time Data Input Hold Time Start Condition Setup Time
IS21
TR:SCL
IS25
TSU:DAT
IS26
THD:DAT
--
IS30
TSU:STA
Only relevant for repeated Start condition After this period the first clock pulse is generated --
IS31
THD:STA
IS33
TSU:STO
IS34
THD:STO
IS40
TAA:SCL
1 MHz mode(1) Start Condition 100 kHz mode Hold Time 400 kHz mode 1 MHz mode(1) Stop Condition 100 kHz mode Setup Time 400 kHz mode 1 MHz mode(1) Stop Condition 100 kHz mode Hold Time 400 kHz mode 1 MHz mode(1) Output Valid From 100 kHz mode Clock 400 kHz mode Bus Free Time 1 MHz mode(1) 100 kHz mode 400 kHz mode 1 MHz mode(1)
--
--
IS45
TBF:SDA
Time the bus must be free before a new transmission can start --
IS50 Note 1:
CB
Bus Capacitive Loading
Maximum pin capacitance = 10 pF for all I2CTM pins (for 1 MHz mode only).
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TABLE 21-33: 10-BIT HIGH-SPEED A/D MODULE SPECIFICATIONS
AC CHARACTERISTICS Standard Operating Conditions: 3.3V and 5.0V (10%) (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended Characteristic Min. Typ Max. Units Conditions
Param No. AD01
Symbol
Device Supply AVDD Module VDD Supply Greater of VDD - 0.3 or 2.7 Vss - 0.3 Reference Inputs AD05 AD06 AD07 AD08 VREFH VREFL VREF IREF Reference Voltage High Reference Voltage Low Current Drain AVss + 2.7 AVss -- 200 .001 AVDD AVDD - 2.7 AVDD + 0.3 300 3 VREFH AVDD + 0.3 0.001 0.244 V V V A A V V A -- -- -- A/D operating A/D off -- -- VINL = AVSS = VREFL = 0V, AVDD = VREFH = 5V Source Impedance = 5 k VINL = AVSS = VREFL = 0V, AVDD = VREFH = 3V Source Impedance = 5 k -- -- -- Lesser of VDD + 0.3 or 5.5 VSS + 0.3 V --
AD02
AVSS
Module VSS Supply
V
--
Absolute Reference Voltage AVss - 0.3
Analog Input AD10 AD11 AD12 VINH-VINL Full-Scale Input Span VIN -- Absolute Input Voltage Leakage Current VREFL AVSS - 0.3 --
AD13
--
Leakage Current
--
0.001
0.244
A
AD15 AD16 AD17
RSS RIN
Switch Resistance Recommended Impedance Of Analog Voltage Source Resolution Integral Nonlinearity Integral Nonlinearity Differential Nonlinearity Differential Nonlinearity Gain Error Gain Error
-- -- --
3.2K 4.4
-- 5K
pF
CSAMPLE Sample Capacitor
DC Accuracy AD20 AD21 Nr INL 10 data bits -- -- -- -- -- -- 0.5 0.5 0.5 0.5 0.75 0.75 < 1 < 1 < 1 < 1 TBD TBD bits -- LSb VINL = AVSS = VREFL = 0V, AVDD = VREFH = 5V LSb VINL = AVSS = VREFL = 0V, AVDD = VREFH = 3V LSb VINL = AVSS = VREFL = 0V, AVDD = VREFH = 5V LSb VINL = AVSS = VREFL = 0V, AVDD = VREFH = 3V LSb VINL = AVSS = VREFL = 0V, AVDD = VREFH = 5V LSb VINL = AVSS = VREFL = 0V, AVDD = VREFH = 3V
AD21A INL AD22 DNL
AD22A DNL AD23 GERR
AD23A GERR
Legend: TBD = To Be Determined Note 1: Because the sample caps will eventually lose charge, clock rates below 10 kHz can affect linearity performance, especially at elevated temperatures. 2: The A/D conversion result never decreases with an increase in the input voltage, and has no missing codes.
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TABLE 21-33: 10-BIT HIGH-SPEED A/D MODULE SPECIFICATIONS (CONTINUED)
AC CHARACTERISTICS Standard Operating Conditions: 3.3V and 5.0V (10%) (unless otherwise stated) Operating temperature -40C TA +85C for Industrial -40C TA +125C for Extended Characteristic Offset Error Offset Error Monotonicity(2) Total Harmonic Distortion Signal to Noise and Distortion Spurious Free Dynamic Range Input Signal Bandwidth Effective Number of Bits Min. -- -- -- -- -- -- -- -- Typ 0.75 0.75 -- TBD TBD TBD -- TBD Max. TBD TBD -- -- -- -- 1 TBD Units Conditions
Param No. AD24
Symbol EOFF
LSb VINL = AVSS = VREFL = 0V, AVDD = VREFH = 5V LSb VINL = AVSS = VREFL = 0V, AVDD = VREFH = 3V -- dB dB dB MHz bits Guaranteed -- -- -- -- --
AD24A EOFF AD25 AD30 AD31 AD32 AD33 AD34 -- THD SINAD SFDR FNYQ ENOB
Dynamic Performance
Legend: TBD = To Be Determined Note 1: Because the sample caps will eventually lose charge, clock rates below 10 kHz can affect linearity performance, especially at elevated temperatures. 2: The A/D conversion result never decreases with an increase in the input voltage, and has no missing codes.
FIGURE 21-20:
A/D CONVERSION TIMING PER INPUT
Tconv Trigger Pulse
TAD A/D Clock A/D Data ADBUFxx CONV 9 Old Data 0 2 1 0 New Data
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TABLE 21-34: COMPARATOR OPERATING CONDITIONS
Sym VDD VDD TEMP Characteristic Voltage Range Voltage Range Temperature Range Min 3.0 4.5 -40 Typ -- -- -- Max 3.6 5.5 105 Units V V C Comments Operating range of 3.0 V-3.6V Operating range of 4.5 V-5.5 V Note that junction temperature can exceed 125C under these ambient conditions.
TABLE 21-35: COMPARATOR AC AND DC SPECIFICATIONS
Standard Operating Conditions (unless otherwise stated) Operating temperature: -40C TA +105C Sym VIOFF VICM VGAIN CMRR TRESP Characteristic Input offset voltage Input common mode voltage range Open Loop gain Common mode rejection ratio Large signal response 0 90 70 20 30 Min Typ 5 Max 15 VDD - 1.5 Units mV V db db ns V+ input step of 100mv while V- input held at AVDD/2. Delay measured from analog input pin to PWM output pin. Comments
TABLE 21-36: DAC DC SPECIFICATIONS
Standard Operating Conditions (unless otherwise stated) Operating temperature: -40C TA +105C Sym CVRSRC CVRES INL DNL Characteristic Input reference voltage Resolution Transfer Function Accuracy Integral Non-Linearity Error Differential Non-Linearity Error Offset Error Gain Error TBD TBD TBD TBD Min 0 10 1 0.8 2 2.0 TBD TBD TBD TBD Typ Max AVDD - 1.6 Units V Bits LSB LSB LSB LSB AVDD = 5 V, DACREF = (AVDD/2) V Comments
Legend: TBD = To Be Determined
TABLE 21-37: DAC AC SPECIFICATIONS
Standard Operating Conditions (unless otherwise stated) Operating temperature: -40C TA +125C Sym TSET Characteristic Settling Time Min Typ Max 2.0 Units s Comments Measured when range = 1 (High Range), and cmref<9:0> transitions from 0x1FF to 0x300.
DS70178A-page 256
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22.0 PACKAGE MARKING INFORMATION
28-Lead QFN-S Example
XXXXXXX XXXXXXX YYWWNNN
dsPIC30F1010 -30I/MM 040700U
28-Lead PDIP (Skinny DIP)
XXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXX YYWWNNN
Example
dsPIC30F202X-30I/SP 0348017
28-Lead SOIC
XXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXX YYWWNNN
Example
dsPIC30F202X-30I/SO
0348017
44-Lead TQFP
Example
XXXXXXXXXX XXXXXXXXXX XXXXXXXXXX YYWWNNN 44-Lead QFN
dsPIC30F202X
-I/PT 0510017
Example
XXXXXXXXXX XXXXXXXXXX XXXXXXXXXX YYWWNNN
Legend: XX...X Y YY WW NNN
dsPIC30F202X
-I/ML 0510017
Customer specific information* Year code (last digit of calendar year) Year code (last 2 digits of calendar year) Week code (week of January 1 is week `01') Alphanumeric traceability code
Note:
In the event the full Microchip part number cannot be marked on one line, it will be carried over to the next line thus limiting the number of available characters for customer specific information.
* Standard device marking consists of Microchip part number, year code, week code and traceability code. For device marking beyond this, certain price adders apply. Please check with your Microchip Sales Office. For QTP devices, any special marking adders are included in QTP price.
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28-Lead Plastic Quad Flat No Lead Package (MM) 6x6x0.9 mm Body (QFN-S) - With 0.40 mm Contact Length (Saw Singulated)
E
EXPOSED METAL PAD (NOTE 2)
E2
e D 2 1
D2 b 2 1 n
K
SEE DETAIL
TOP VIEW
OPTIONAL INDEX AREA (NOTE 1)
ALTERNATE INDEX INDICATORS
L
BOTTOM VIEW
A1 A
DETAIL ALTERNATE PAD OUTLINE
Units Number of Pins Pitch Overall Height Standoff Overall Width Exposed Pad Width Overall Length Exposed Pad Length Lead Width Contact Length Contact-to-Exposed Pad * Controlling Parameter Significant Characteristic Dimension Limits n e A A1 E E2 D D2 b L K .031 .000 .232 .144 .232 .144 .013 .012 .008 MIN
INCHES NOM 28 .026 BSC .035 .001 .236 .146 .236 .146 .015 .016 - .039 .002 .240 .148 .240 .148 .017 .020 - 0.80 0.00 5.90 3.65 5.90 3.65 0.33 0.30 0.20 MAX MIN
MILLIMETERS* NOM 28 0.65 BSC 0.90 0.02 6.00 3.70 6.00 3.70 0.38 0.40 - 1.00 0.05 6.10 3.75 6.10 3.75 0.43 0.50 - MAX
Notes: 1. Pin 1 visual index feature may vary, but must be located within the hatched area. 2. Exposed pad varies according to die attach paddle size. BSC: Basic Dimension. Theoretically exact value shown without tolerances. See ASME Y14.5M Revised 1-12-06 Drawing No. C04-124
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28-Lead Skinny Plastic Dual In-line (SP) - 300 mil Body (PDIP)
E1
D
2 n 1
E
A2 A L A1 B1 B p
c eB
Units Number of Pins Pitch Top to Seating Plane Molded Package Thickness Base to Seating Plane Shoulder to Shoulder Width Molded Package Width Overall Length Tip to Seating Plane Lead Thickness Upper Lead Width Lower Lead Width Overall Row Spacing Mold Draft Angle Top Dimension Limits n p A A2 A1 E E1 D L c B1 B eB MIN
INCHES* NOM 28 .100 .140 .125 .015 .300 .275 1.345 .125 .008 .040 .016 .320 .310 .285 1.365 .130 .012 .053 .019 .350 .325 .295 1.385 .135 .015 .065 .022 .430 .150 .130 .160 .135 MAX MIN
MILLIMETERS NOM 28 2.54 3.56 3.18 0.38 7.62 6.99 34.16 3.18 0.20 1.02 0.41 8.13 7.87 7.24 34.67 3.30 0.29 1.33 0.48 8.89 8.26 7.49 35.18 3.43 0.38 1.65 0.56 10.92 3.81 3.30 4.06 3.43 MAX
5 10 15 5 10 15 Mold Draft Angle Bottom 5 10 15 5 10 15 * Controlling Parameter Significant Characteristic Notes: Dimension D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed .010" (0.254mm) per side. JEDEC Equivalent: MO-095 Drawing No. C04-070
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28-Lead Plastic Small Outline (SO) - Wide, 300 mil Body (SOIC)
E E1 p
D
B n h 45 c A Units Dimension Limits n p L A1 INCHES* NOM 28 .050 .099 .091 .008 .407 .295 .704 .020 .033 4 .011 .017 12 12 MILLIMETERS NOM 28 1.27 2.36 2.50 2.24 2.31 0.10 0.20 10.01 10.34 7.32 7.49 17.65 17.87 0.25 0.50 0.41 0.84 0 4 0.23 0.28 0.36 0.42 0 12 0 12 A2 2 1
MAX Number of Pins Pitch Overall Height A .093 .104 2.64 Molded Package Thickness A2 .088 .094 2.39 Standoff A1 .004 .012 0.30 Overall Width E .394 .420 10.67 Molded Package Width E1 .288 .299 7.59 Overall Length D .695 .712 18.08 Chamfer Distance h .010 .029 0.74 Foot Length L .016 .050 1.27 Foot Angle Top 0 8 8 c Lead Thickness .009 .013 0.33 Lead Width B .014 .020 0.51 Mold Draft Angle Top 0 15 15 Mold Draft Angle Bottom 0 15 15 * Controlling Parameter Significant Characteristic Notes: Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed .010" (0.254mm) per side. JEDEC Equivalent: MS-013 Drawing No. C04-052
MIN
MAX
MIN
DS70178A-page 260
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44-Lead Plastic Thin-Quad Flatpack (PT) 10x10x1 mm Body, 1.0/0.10 mm Lead Form (TQFP)
E E1 #leads=n1 p
D1
D
2 1 B n CH x 45 A c
L Units Dimension Limits n p n1 A A2 A1 L F
A1 F INCHES NOM 44 .031 11 .043 .039 .004 .024 .039 REF.
A2
MIN
MAX
MIN
Number of Pins
MILLIMETERS* NOM 44 0.80 11 1.10 1.00 0.10 0.60 1.00 REF.
MAX
Pitch Pins per Side Overall Height Molded Package Thickness Standoff Foot Length Footprint (Reference)
.039 .037 .002 .018
.047 .041 .006 .030
1.00 0.95 0.05 0.45
1.20 1.05 0.15 0.75
Foot Angle 0 3.5 7 0 3.5 7 Overall Width E .463 .472 .482 11.75 12.00 12.25 Overall Length D .463 .472 .482 11.75 12.00 12.25 Molded Package Width E1 .390 .394 .398 9.90 10.00 10.10 Molded Package Length D1 .390 .394 .398 9.90 10.00 10.10 c Lead Thickness .004 .006 .008 0.09 0.15 0.20 Lead Width B .012 .015 .017 0.30 0.38 0.44 CH .025 .035 .045 0.64 0.89 1.14 Pin 1 Corner Chamfer 5 10 15 5 10 15 Mold Draft Angle Top 5 10 15 5 10 15 Mold Draft Angle Bottom * Controlling Parameter Notes: Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed .010" (0.254mm) per side. REF: Reference Dimension, usually without tolerance, for information purposes only. See ASME Y14.5M JEDEC Equivalent: MS-026 Revised 07-22-05 Drawing No. C04-076
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44-Lead Plastic Quad Flat No Lead Package (ML) 8x8 mm Body (QFN)
E
EXPOSED METAL PAD (NOTE 2)
K
p
D
D2
2 1 n OPTIONAL INDEX AREA (NOTE 1) PIN 1 INDEX ON EXPOSED PAD (PROFILE MAY VARY)
B
E2 L
TOP VIEW
BOTTOM VIEW
DETAIL: CONTACT VARIANTS
A A3 Units Dimension Limits Number of Contacts Pitch Overall Height Standoff Base Thickness Overall Width Exposed Pad Width Overall Length Exposed Pad Length Contact Width Contact Length Contact-to-Exposed-Pad * Controlling Parameter Significant Characteristic Notes: 1. Pin 1 visual index feature may vary, but must be located within the hatched area. 2. Exposed pad varies according to die attach paddle size. BSC: Basic Dimension. Theoretically exact value shown without tolerances. See ASME Y14.5M REF: Reference Dimension, usually without tolerance, for information purposes only. See ASME Y14.5M JEDEC equivalent: M0-220 Drawing No. C04-103 n p A A1 A3 E E2 D D2 B L K .309 .236 .309 .236 .008 .014 .014 .031 .000 MIN A1 INCHES NOM 44 .026 BSC .035 .001 .010 REF .315 .258 .315 .258 .013 .016 .321 .260 .321 .260 .013 .019 7.85 5.99 7.85 5.99 0.20 0.35 0.20 .039 .002 0.80 0 0.65 BSC 0.90 0.02 0.25 REF 8.00 6.55 8.00 6.55 0.33 0.40 8.15 6.60 8.15 6.60 0.35 0.48 1.00 0.05 MAX MIN MILLIMETERS* NOM 44 MAX
Revised 09-12-05
DS70178A-page 262
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THE MICROCHIP WEB SITE
Microchip provides online support via our WWW site at www.microchip.com. This web site is used as a means to make files and information easily available to customers. Accessible by using your favorite Internet browser, the web site contains the following information: * Product Support - Data sheets and errata, application notes and sample programs, design resources, user's guides and hardware support documents, latest software releases and archived software * General Technical Support - Frequently Asked Questions (FAQ), technical support requests, online discussion groups, Microchip consultant program member listing * Business of Microchip - Product selector and ordering guides, latest Microchip press releases, listing of seminars and events, listings of Microchip sales offices, distributors and factory representatives
CUSTOMER SUPPORT
Users of Microchip products can receive assistance through several channels: * * * * Distributor or Representative Local Sales Office Field Application Engineer (FAE) Technical Support
Customers should contact their distributor, representative or field application engineer (FAE) for support. Local sales offices are also available to help customers. A listing of sales offices and locations is included in the back of this document. Technical support is available through the web site at: http://support.microchip.com
CUSTOMER CHANGE NOTIFICATION SERVICE
Microchip's customer notification service helps keep customers current on Microchip products. Subscribers will receive e-mail notification whenever there are changes, updates, revisions or errata related to a specified product family or development tool of interest. To register, access the Microchip web site at www.microchip.com, click on Customer Change Notification and follow the registration instructions.
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READER RESPONSE
It is our intention to provide you with the best documentation possible to ensure successful use of your Microchip product. If you wish to provide your comments on organization, clarity, subject matter, and ways in which our documentation can better serve you, please FAX your comments to the Technical Publications Manager at (480) 792-4150. Please list the following information, and use this outline to provide us with your comments about this document. To: RE: Technical Publications Manager Reader Response Total Pages Sent ________
From: Name Company Address City / State / ZIP / Country Telephone: (_______) _________ - _________ Application (optional): Would you like a reply? Y N Literature Number: DS70178A FAX: (______) _________ - _________
Device: dsPIC30F1010/202X Questions:
1. What are the best features of this document?
2. How does this document meet your hardware and software development needs?
3. Do you find the organization of this document easy to follow? If not, why?
4. What additions to the document do you think would enhance the structure and subject?
5. What deletions from the document could be made without affecting the overall usefulness?
6. Is there any incorrect or misleading information (what and where)?
7. How would you improve this document?
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APPENDIX A: REVISION HISTORY
Revision A (June 2006) * Initial release of this document.
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NOTES:
DS70178A-page 266
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INDEX
A
A/D .................................................................................... 165 Configuring Analog Port............................................ 182 AC Characteristics ............................................................ 232 Load Conditions ........................................................ 232 AC Temperature and Voltage Specifications .................... 232 Address Generator Units .................................................... 43 Alternate Vector Table ........................................................ 53 Assembler MPASM Assembler................................................... 222 Automatic Clock Stretch.................................................... 152 During 10-bit Addressing (STREN = 1)..................... 152 During 7-bit Addressing (STREN = 1)....................... 152 Receive Mode ........................................................... 152 Transmit Mode .......................................................... 152 Core Architecture Overview..................................................................... 21 Core Register Map.............................................................. 39 Customer Change Notification Service............................. 263 Customer Notification Service .......................................... 263 Customer Support............................................................. 263
D
Data Access from Program Memory Using Program Space Visibility............................................. 34 Data Accumulators and Adder/Subtractor .......................... 27 Data Space Write Saturation ...................................... 29 Overflow and Saturation ............................................. 27 Round Logic ............................................................... 28 Write Back .................................................................. 28 Data Address Space........................................................... 35 Alignment.................................................................... 38 Alignment (Figure) ...................................................... 38 MCU and DSP (MAC Class) Instructions ................... 37 Memory Map......................................................... 35, 36 Near Data Space ........................................................ 39 Software Stack ........................................................... 39 Spaces........................................................................ 38 Width .......................................................................... 38 DC Characteristics I/O Pin Input Specifications ...................................... 228 I/O Pin Output Specifications.................................... 231 Idle Current (IIDLE) .................................................... 228 Operating Current (IDD) ............................................ 227 Power-Down Current (IPD)........................................ 229 Program and EEPROM ............................................ 231 Development Support ....................................................... 221 Device Configuration Register Map ............................................................ 212 Device Configuration Registers ........................................ 210 FGS .......................................................................... 210 FOSC........................................................................ 210 FWDT ....................................................................... 210 Device Overview................................................................... 9 Divide Support .................................................................... 24 DSP Engine ........................................................................ 25 Multiplier ..................................................................... 27 DSPIC30F2020 Block Diagram ........................................... 13 Dual Output Compare Match Mode .................................. 102 Continuous Pulse Mode ........................................... 102 Single Pulse Mode.................................................... 102
B
Band Gap Start-up Time Requirements............................................................ 239 Timing Characteristics .............................................. 239 Barrel Shifter ....................................................................... 29 Baud Rate Error Calculation (BRGH = 0) ......................... 158 Bit-Reversed Addressing .................................................... 47 Example ...................................................................... 47 Implementation ........................................................... 47 Modifier Values (table) ................................................ 48 Sequence Table (16-Entry)......................................... 48 Block Diagrams 16-bit Timer1 Module .................................................. 88 DSP Engine ................................................................ 26 DSPIC30F2020 ............................................................ 10 dsPIC30F2023 ............................................................ 16 External Power-on Reset Circuit............................... 207 I2C............................................................................. 150 Input Capture Mode .................................................... 97 Oscillator System ...................................................... 199 Output Compare Mode ............................................. 101 Reset System............................................................ 205 Shared Port Structure ................................................. 77 SPI ............................................................................ 146 SPI Master/Slave Connection ................................... 146 UART ........................................................................ 157 Brown-out Reset Timing Requirements................................................ 238
C
C Compilers MPLAB C18 .............................................................. 222 MPLAB C30 .............................................................. 222 CLKOUT and I/O Timing Characteristics .......................................................... 236 Requirements............................................................ 236 Code Examples Erasing a Row of Program Memory............................ 83 Initiating a Programming Sequence............................ 84 Loading Write Latches ................................................ 84 Code Protection ................................................................ 191 Configuring Analog Port Pins .............................................. 78 Control Registers ................................................................ 82 NVMADR .................................................................... 82 NVMADRU.................................................................. 82 NVMCON .................................................................... 82 NVMKEY..................................................................... 82
E
Electrical Characteristics .................................................. 225 AC............................................................................. 232 Equations I2C ............................................................................ 154 UART Baud Rate with BRGH = 0 ............................. 158 UART Baud Rate with BRGH = 1 ............................. 158 Errata .................................................................................... 8 External Clock Input.......................................................... 201 External Clock Timing Characteristics Type A, B and C Timer ............................................. 240 External Clock Timing Requirements ............................... 233 Type A Timer ............................................................ 240 Type B Timer ............................................................ 241 Type C Timer............................................................ 241 External Interrupt Requests ................................................ 53
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DS70178A-page 267
dsPIC30F1010/202X
F
Fast Context Saving............................................................ 53 Firmware Instructions........................................................ 213 Flash Program Memory....................................................... 81 In-Circuit Serial Programming (ICSP) ......................... 81 Run Time Self-Programming (RTSP) ......................... 81 Table Instruction Operation Summary ........................ 81 Input Change Notification Register Map ............................. 80 Instruction Addressing Modes ............................................ 43 File Register Instructions ............................................ 43 Fundamental Modes Supported ................................. 43 MAC Instructions ........................................................ 44 MCU Instructions ........................................................ 44 Move and Accumulator Instructions............................ 44 Other Instructions ....................................................... 44 Instruction Set................................................................... 213 Instruction Set Overview................................................... 216 Inter-Integrated Circuit. See I2C Internal Clock Timing Examples ....................................... 234 Internet Address ............................................................... 263 Interrupt Priority .................................................................. 50 Interrupt Sequence ............................................................. 53 Interrupt Stack Frame ................................................. 53 Interrupts............................................................................. 49 Traps .......................................................................... 51
I
I/O Pin Specifications Input .......................................................................... 228 Output ....................................................................... 231 I/O Ports .............................................................................. 77 Parallel I/O (PIO)......................................................... 77 I2C ..................................................................................... 149 I2C 10-bit Slave Mode Operation ...................................... 151 Reception .................................................................. 151 Transmission............................................................. 151 I2C 7-bit Slave Mode Operation ........................................ 151 Reception .................................................................. 151 Transmission............................................................. 151 I2C Master Mode Baud Rate Generator ................................................ 154 Clock Arbitration........................................................ 154 Multi-Master Communication, Bus Collision and Bus Arbitration .................................................. 154 Reception .................................................................. 153 Transmission............................................................. 153 I2C Module Addresses ................................................................. 151 Bus Data Timing Characteristics Master Mode ..................................................... 250 Slave Mode ....................................................... 252 Bus Data Timing Requirements Master Mode ..................................................... 251 Slave Mode ....................................................... 253 Bus Start/Stop Bits Timing Characteristics Master Mode ..................................................... 250 Slave Mode ....................................................... 252 General Call Address Support .................................. 153 Interrupts ................................................................... 152 IPMI Support ............................................................. 153 Master Operation ...................................................... 153 Master Support ......................................................... 153 Operating Function Description ................................ 149 Operation During CPU Sleep and Idle Modes .......... 154 Pin Configuration ...................................................... 149 Programmer's Model................................................. 149 Register Map............................................................. 155 Registers ................................................................... 149 Slope Control ............................................................ 153 Software Controlled Clock Stretching (STREN = 1).. 152 Various Modes .......................................................... 149 Idle Current (IIDLE)............................................................. 228 In-Circuit Debugger ........................................................... 211 In-Circuit Serial Programming (ICSP) ............................... 191 Initialization Condition for RCON Register Case 1............ 208 Initialization Condition for RCON Register Case 2............ 208 Input Capture (CAPX) Timing Characteristics................... 242 Input Capture Interrupts ...................................................... 99 Register Map............................................................. 100 Input Capture Module.......................................................... 97 Simple Capture Event Mode ....................................... 98 Sleep and Idle Modes ................................................. 99 Input Capture Timing Requirements ................................. 242 Input Change Notification.................................................... 78
L
Load Conditions................................................................ 232
M
Memory Organization ......................................................... 31 Microchip Internet Web Site.............................................. 263 Modulo Addressing ............................................................. 45 Applicability................................................................. 47 Operation Example ..................................................... 46 Start and End Address ............................................... 45 W Address Register Selection .................................... 45 Motor Control PWM Module Fault Timing Characteristics ..................................... 244 Timing Characteristics .............................................. 244 Timing Requirements................................................ 244 MPLAB ASM30 Assembler, Linker, Librarian ................... 222 MPLAB ICD 2 In-Circuit Debugger ................................... 223 MPLAB ICE 2000 High-Performance Universal In-Circuit Emulator ............................................................ 223 MPLAB ICE 4000 High-Performance Universal In-Circuit Emulator .................................................... 223 MPLAB Integrated Development Environment Software.. 221 MPLAB PM3 Device Programmer .................................... 223 MPLINK Object Linker/MPLIB Object Librarian ................ 222
O
OC/PWM Module Timing Characteristics ......................... 243 Operating Current (IDD) .................................................... 227 Oscillator Operating Modes (Table).......................................... 198 System Overview...................................................... 191 Oscillator Configurations................................................... 200 Fail-Safe Clock Monitor ............................................ 202 Initial Clock Source Selection ................................... 200 Phase Locked Loop (PLL) ........................................ 200 Start-up Timer (OST) ................................................ 200 Oscillator Selection ........................................................... 191 Oscillator Start-up Timer Timing Characteristics .............................................. 237 Timing Requirements................................................ 238 Output Compare Interrupts ............................................... 104 Output Compare Mode Register Map ............................................................ 105 Output Compare Module .................................................. 101 Timing Characteristics .............................................. 242 Timing Requirements................................................ 242 Output Compare Operation During CPU Idle Mode ......... 103 Output Compare Sleep Mode Operation .......................... 103
DS70178A-page 268
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dsPIC30F1010/202X
P
Packaging Information Marking ..................................................................... 257 PICSTART Plus Development Programmer ..................... 224 Pinout Descriptions ................................................. 11, 14, 17 PLL Clock Timing Specifications....................................... 234 POR. See Power-on Reset Port Register Map DSPIC30F2020 ............................................................ 79 dsPIC30F2023 ............................................................ 80 Port Write/Read Example ................................................... 78 Power-Down Current (IPD) ................................................ 229 Power-on Reset (POR) ..................................................... 191 Oscillator Start-up Timer (OST) ................................ 191 Power-up Timer (PWRT) .......................................... 191 Power-Saving Modes ........................................................ 209 Idle ............................................................................ 210 Sleep......................................................................... 209 Power-Saving Modes (Sleep and Idle) ............................. 191 Power-up Timer Timing Characteristics .............................................. 237 Timing Requirements................................................ 238 Product Identification System ........................................... 271 Program Address Space ..................................................... 31 Construction................................................................ 32 Data Access from Program Memory Using Table Instructions ......................................................... 33 Data Access from, Address Generation...................... 32 Memory Map ............................................................... 31 Table Instructions TBLRDH ............................................................. 33 TBLRDL .............................................................. 33 TBLWTH ............................................................. 33 TBLWTL.............................................................. 33 Program and EEPROM Characteristics ............................ 231 Program Counter ................................................................ 22 Program Data Table Access ............................................... 34 Program Space Visibility Window into Program Space Operation...................... 35 Programmer's Model........................................................... 22 Diagram ...................................................................... 23 Programming Operations .................................................... 83 Algorithm for Program Flash ....................................... 83 Erasing a Row of Program Memory............................ 83 Initiating the Programming Sequence......................... 84 Loading Write Latches ................................................ 84 Programming, Device Instructions .................................... 213
S
Sales and Support ............................................................ 271 Serial Peripheral Interface. See SPI Simple Capture Event Mode Capture Buffer Operation ........................................... 98 Capture Prescaler....................................................... 98 Hall Sensor Mode ....................................................... 98 Input Capture in CPU Idle Mode................................. 99 Timer2 and Timer3 Selection Mode ........................... 98 Simple OC/PWM Mode Timing Requirements ................. 243 Simple Output Compare Match Mode .............................. 102 Simple PWM Mode ........................................................... 102 Period ....................................................................... 103 Software Simulator (MPLAB SIM) .................................... 222 Software Stack Pointer, Frame Pointer .............................. 22 CALL Stack Frame ..................................................... 39 SPI .................................................................................... 145 SPI Mode Slave Select Synchronization ................................... 147 SPI1 Register Map ................................................... 148 SPI Module ....................................................................... 145 Framed SPI Support................................................. 146 Operating Function Description ................................ 145 SDOx Disable ........................................................... 145 Timing Characteristics Master Mode (CKE = 0).................................... 245 Master Mode (CKE = 1).................................... 246 Slave Mode (CKE = 1).............................. 247, 248 Timing Requirements Master Mode (CKE = 0).................................... 245 Master Mode (CKE = 1).................................... 246 Slave Mode (CKE = 0)...................................... 247 Slave Mode (CKE = 1)...................................... 249 Word and Byte Communication................................ 145 SPI Operation During CPU Idle Mode .............................. 147 SPI Operation During CPU Sleep Mode........................... 147 STATUS Register ............................................................... 22 Symbols used in Opcode Descriptions ............................. 214 System Integration............................................................ 191 Register Map ............................................................ 212
T
Temperature and Voltage Specifications AC............................................................................. 232 Timer1 Module.................................................................... 87 16-bit Asynchronous Counter Mode ........................... 87 16-bit Synchronous Counter Mode............................. 87 16-bit Timer Mode ...................................................... 87 Gate Operation ........................................................... 88 Interrupt ...................................................................... 89 Operation During Sleep Mode .................................... 88 Prescaler .................................................................... 88 Register Map .............................................................. 90 Timer2 and Timer3 Selection Mode.................................. 102 Timer2/3 Module................................................................. 91 16-bit Timer Mode ...................................................... 91 32-bit Synchronous Counter Mode............................. 91 32-bit Timer Mode ...................................................... 91 ADC Event Trigger ..................................................... 94 Gate Operation ........................................................... 94 Interrupt ...................................................................... 94 Operation During Sleep Mode .................................... 94 Register Map .............................................................. 95 Timer Prescaler .......................................................... 94
R
Reader Response ............................................................. 264 Reset......................................................................... 191, 204 Reset Sequence ................................................................. 51 Reset Sources ............................................................ 51 Reset Timing Characteristics ............................................ 237 Reset Timing Requirements ............................................. 238 Resets POR .......................................................................... 206 POR with Long Crystal Start-up Time....................... 207 POR, Operating without FSCM and PWRT .............. 207 RTSP Operation.................................................................. 82
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DS70178A-page 269
dsPIC30F1010/202X
Timing Characteristics A/D Conversion 10-Bit High-speed (CHPS = 01, SIMSAM = 0, ASAM = 0, SSRC = 000) .... 255 Band Gap Start-up Time ........................................... 239 CLKOUT and I/O....................................................... 236 External Clock ........................................................... 232 I2C Bus Data Master Mode ..................................................... 250 Slave Mode ....................................................... 252 I2C Bus Start/Stop Bits Master Mode ..................................................... 250 Slave Mode ....................................................... 252 Input Capture (CAPX) ............................................... 242 Motor Control PWM Module...................................... 244 Motor Control PWM Module Falult ............................ 244 OC/PWM Module ...................................................... 243 Oscillator Start-up Timer ........................................... 237 Output Compare Module........................................... 242 Power-up Timer ........................................................ 237 Reset......................................................................... 237 SPI Module Master Mode (CKE = 0) .................................... 245 Master Mode (CKE = 1) .................................... 246 Slave Mode (CKE = 0) ...................................... 247 Slave Mode (CKE = 1) ...................................... 248 Type A, B and C Timer External Clock ..................... 240 Watchdog Timer........................................................ 237 Timing Diagrams PWM Output ............................................................. 104 Time-out Sequence on Power-up (MCLR Not Tied to VDD), Case 1......................................... 206 Time-out Sequence on Power-up (MCLR Not Tied to VDD), Case 2......................................... 207 Time-out Sequence on Power-up (MCLR Tied to VDD) .............................................................. 206 Timing Diagrams and Specifications DC Characteristics - Internal RC Accuracy ............... 234 Timing Diagrams.See Timing Characteristics Timing Requirements Band Gap Start-up Time ........................................... 239 Brown-out Reset ....................................................... 238 CLKOUT and I/O....................................................... 236 External Clock ........................................................... 233 I2C Bus Data (Master Mode)..................................... 251 I2C Bus Data (Slave Mode)....................................... 253 Input Capture ............................................................ 242 Motor Control PWM Module...................................... 244 Oscillator Start-up Timer ........................................... 238 Output Compare Module........................................... 242 Power-up Timer ........................................................ 238 Reset......................................................................... 238 Simple OC/PWM Mode ............................................. 243 SPI Module Master Mode (CKE = 0) .................................... 245 Master Mode (CKE = 1) .................................... 246 Slave Mode (CKE = 0) ...................................... 247 Slave Mode (CKE = 1) ...................................... 249 Type A Timer External Clock .................................... 240 Type B Timer External Clock .................................... 241 Type C Timer External Clock .................................... 241 Watchdog Timer........................................................ 238 Timing Specifications PLL Clock.................................................................. 234 Traps Trap Sources .............................................................. 51
U
UART Baud Rate Generator (BRG) .................................... 158 Enabling and Setting Up UART ................................ 158 IrDA Built-in Encoder and Decoder........................... 159 Receiving 8-bit or 9-bit Data Mode.................................... 159 Transmitting 8-bit Data Mode ................................................ 159 9-bit Data Mode ................................................ 159 Break and Sync Sequence ............................... 159 UART Module UART1 Register Map................................................ 164 Unit ID Locations .............................................................. 191 Universal Asynchronous Receiver Transmitter. See UART
W
Wake-up from Sleep ......................................................... 191 Wake-up from Sleep and Idle ............................................. 53 Watchdog Timer Timing Characteristics .............................................. 237 Timing Requirements................................................ 238 Watchdog Timer (WDT)............................................ 191, 209 Enabling and Disabling ............................................. 209 Operation .................................................................. 209 WWW Address ................................................................. 263 WWW, On-Line Support ....................................................... 8
DS70178A-page 270
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dsPIC30F1010/202X
PRODUCT IDENTIFICATION SYSTEM
To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office.
d s P I C 3 0 F 2 0 2 0 AT - 3 0 E / S O - E S
Trademark Architecture Package MM = QFN PT = TQFP SP = SPDIP SO = SOIC S = Die (Waffle Pack) W = Die (Wafers) Temperature I = Industrial -40C to +85C E = Extended High Temp -40C to +125C Speed 20 = 20 MIPS 30 = 30 MIPS T = Tape and Reel A,B,C... = Revision Level Custom ID (3 digits) or Engineering Sample (ES)
Flash Memory Size in Bytes
0 = ROMless 1 = 1K to 6K 2 = 7K to 12K 3 = 13K to 24K 4 = 25K to 48K 5 = 49K to 96K 6 = 97K to 192K 7 = 193K to 384K 8 = 385K to 768K 9 = 769K and Up
Device ID
Example: DSPIC30F2020AT-301/SO = 30 MIPS, Industrial temp., SOIC package, Rev. A
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WORLDWIDE SALES AND SERVICE
AMERICAS
Corporate Office 2355 West Chandler Blvd. Chandler, AZ 85224-6199 Tel: 480-792-7200 Fax: 480-792-7277 Technical Support: http://support.microchip.com Web Address: www.microchip.com Asia Pacific Office Suites 3707-14, 37th Floor Tower 6, The Gateway Habour City, Kowloon Hong Kong Tel: 852-2401-1200 Fax: 852-2401-3431 Atlanta Alpharetta, GA Tel: 770-640-0034 Fax: 770-640-0307 Boston Westborough, MA Tel: 774-760-0087 Fax: 774-760-0088 Chicago Itasca, IL Tel: 630-285-0071 Fax: 630-285-0075 Dallas Addison, TX Tel: 972-818-7423 Fax: 972-818-2924 Detroit Farmington Hills, MI Tel: 248-538-2250 Fax: 248-538-2260 Kokomo Kokomo, IN Tel: 765-864-8360 Fax: 765-864-8387 Los Angeles Mission Viejo, CA Tel: 949-462-9523 Fax: 949-462-9608 San Jose Mountain View, CA Tel: 650-215-1444 Fax: 650-961-0286 Toronto Mississauga, Ontario, Canada Tel: 905-673-0699 Fax: 905-673-6509
06/08/06
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