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ST7277
8-BIT USB MCU FOR MONITORS WITH UP TO 60K ROM, 2K RAM, ADC, TIMER, INFRA RED, SYNC, PWM/BRM, DDC/DMA, 2C & SCI I
BRIEF DATA
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User ROM: up to 60 Kbytes Data RAM: up to 2 Kbytes (256 bytes stack) 8 MHz Maximum Internal Clock Frequency in fast mode, 4 MHz in normal mode Run, Wait and Halt CPU modes RAM Retention Mode Sync Processor for Mode Recognition, power management and composite video blanking, clamping and free-running frequency generation. - Corrector mode - Analyzer mode USB (Universal Serial Bus) for monitor function - Integrated 3.3V voltage regulator - Integrated Transceiver - Suspend and Resume operations Fast I2C Multi Master Interface DDC Bus Interface fully compliant with DDC1, 2B, 2B+, 2AB, 2Bi standards 32 I/O lines - 8 Open Drain I/Os with high current capacity (10 mA) on port A - 5 lines programmable as interrupt inputs 16-bit timer with 2 input captures and 2 output compare functions (with 1 output pin) 8-bit Analog to Digital Converter with 8 channels on port B 8 10-bit PWM/BRM Digital to Analog outputs One 12-bit PWM/BRM Digital to Analog output Asynchronous Serial Communications Interface Infra red controller 1 Master Reset and Power on/off reset Programmable Watchdog for system reliability 56-pin Shrink Dual In line Plastic package or 64pin Plastic Quad Flat Pack Fully static operation 0 to + 70 oC Operating Temperature Range 4.0V to 5.5V supply operating range 24 MHz Quartz Oscillator
PQFP64
PSDIP56
See Ordering Information at the end of the Document
63 basic instructions/17 main address modes 8x8 unsigned multiply instruction s True bit manipulation s Versatile Development Tools (DOS and Windows) including assembler, linker, Ccompiler, archiver, source level debugger, and hardware emulator Note 1: Power On/Off reset not implemented in this revision.
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April 1998
This is preliminary information on a new product in development orundergoing evaluation. Detailsare subject to change without notice.
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ST7277
1 GENERAL DESCRIPTION
1.1 INTRODUCTION The ST7277 is a HCMOS microcontroller unit (MCU) from the ST7 family with dedicated peripherals for Monitor applications. It is based around an industry standard 8-bit core and offers an enhanced instruction set. The processor runs with an external clock at 24 MHz with a 5V supply. Due to the fully static design of this device, operation down to DC is possible. Under software control the ST7277 can be placed in WAIT or HALT mode thus reducing power consumption. The enhanced instruction set and addressing modes afford real programming potential. Figure 1. ST7277 Block Diagram
PO RT A
In addition to standard 8-bit data management the ST7 features true bit manipulation, 8x8 unsigned multiplication and indirect addressing modes. The device includes an on-chip oscillator, CPU, Sync Processor for video timing & Vfback analysis, up to 60K ROM, up to 2K RAM, USB/DMA, I/ O, a timer with 2 input captures and 2 output compares, an 8-channel Analog to Digital Converter, DDC/DMA, I2C multi Master, SCI Serial Communications Interface, Watchdog Reset, an Infra Red Control preprocessor, and one 12-bit and eight 10bit PWM/BRM outputs for analog DC control of external functions.
PA0-PA6 PA7/BLANKOUT VD D A VS S A
Up to 60K Bytes ROM ADC PORT B Up to 2K Bytes RAM INFRA RED
AIN 0-AIN7
PB1..7/AIN1..7 PB 0/ VFBAC K/AIN0 IR IN USBV C C USBDP USBDM USBGND PC7/TDO PC6/RD I PC5/SDAI PC4/SCLI PC3/SDAD PC2/RX/SCLD PC1/HSYN CI2 PC0/OCMP/HFBACK RESET
ADDRESS / DATA BUSES
USB SIE IC
SCLD
SDAI
HSYNCI2
TDO
SCI (UART)
USB DMA
PORT C PORT C
OCMP
DDC DMA
TIMER
HFBACK/VFBACK
W ATCHDOG
H/CSYNC VSYNC
CONTROL 8-BIT CO RE ALU
PCL PCH SP X Y A CC
SYNC PROCESSOR
RDI
DDC
SDAD
SCLI
VSYN CI1 HSYNCI1 PD7/VSYNCI2 PD6/CLAMPOUT PD5/ITA PD4/ITB PD3/ITC PD2/VSYNCO PD1/HSYNCO PD0/CSYNCI DA0 DA1,DA8
VSYNCO CLAMPOUT
POWER ON/OFF PORT D POWER SUPPLY INTERNAL CLOCK OSC /3 or 6 PW M/BRM
V DD V SS OSCIN OSCOUT
CSYNCI
VSYNCI2
HSYNCO
VR01735Q
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ST7277
1.2 DEVICE SUMMARY
PSDIP56 PQFP64 ROM (bytes) RAM (bytes) ADC 16-Bit Timer I2C Bus DDC/DMA Sync Processor PWM I/O USB IR SCI EPROM Device ST72771N9B1 ST72771R9Q1 60K 2K 8 channels 1 one multimaster yes yes 9 32 yes yes yes ST72771N6B1 ST72771R6Q1 32K 1K 8 channels ST72771N5B1 ST72771R5Q1 24K 768 8 channels ST72771N4B1 ST72771R4Q1 16K 512 8 channels
1 1 1 one multimaster one multimaster one multimaster yes yes yes yes yes yes 9 9 9 32 32 32 yes yes yes yes yes yes yes yes yes ST72E771N9D1 (CSDIP56) or ST72E771R9G1 (CQFP64)
Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical components in life support devices or systems without the express written approval of SGS-THOMSON Microelectronics.
(c)1998 SGS-THOMSON Microelectronics - All Rights Reserved. Purchase of I2C Components by SGS-THO MSON Microelectronics conveys a license under the Philips I2C Patent. Rights to use these components in an I 2C system is granted provided that the system conforms to the I 2C Standard Specification as defined by Philips. SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - France - Germany - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands - Singapore Spain - Sweden - Swit zerland - Taiwan - Thailand - United Kingdom - U.S.A.
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