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8XC52 54 58 CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER
Commercial Express 87C52 80C52 80C32 87C54 80C54 87C58 80C58
See Table 1 for Proliferation Options
Y
High Performance CHMOS EPROM ROM CPU 12 24 33 MHz Operations Three 16-Bit Timer Counters Programmable Clock Out Up Down Timer Counter Three Level Program Lock System 8K 16K 32K On-Chip Program Memory 256 Bytes of On-Chip Data RAM Improved Quick Pulse Programming Algorithm Boolean Processor 32 Programmable I O Lines
Y Y
6 Interrupt Sources Programmable Serial Channel with Framing Error Detection Automatic Address Recognition TTL and CMOS Compatible Logic Levels 64K External Program Memory Space 64K External Data Memory Space MCS 51 Microcontroller Compatible Instruction Set Power Saving Idle and Power Down Modes ONCE (On-Circuit Emulation) Mode Four-Level Interrupt Priority Extended Temperature Range Except for 33 MHz Offering ( b 40 C to a 85 C)
Y Y Y Y Y Y Y Y
Y
Y Y Y
Y
Y Y
Y Y Y
MEMORY ORGANIZATION
ROM Device 80C52 80C54 80C58 EPROM Version 87C52 87C54 87C58 ROMless Version 80C32 80C32 80C32 ROM EPROM Bytes 8K 16K 32K RAM Bytes 256 256 256
These devices can address up to 64 Kbytes of external program data memory The Intel 8XC52 8XC54 8XC58 is a single-chip control-oriented microcontroller which is fabricated on Intel's reliable CHMOS III-E technology Being a member of the MCS 51 family of controllers the 8XC52 8XC54 8XC58 uses the same powerful instruction set has the same architecture and is pin-for-pin compatible with the existing MCS 51 family of products The 8XC52 8XC54 8XC58 is an enhanced version of the 87C51 80C51BH 80C31BH The added features make it an even more powerful microcontroller for applications that require clock output and up down counting capabilities such as motor control It also has a more versatile serial channel that facilitates multi-processor communications Throughout this document 8XC5X will refer to the 8XC52 80C32 8XC54 and 8XC58 unless information applies to a specific device
Other brands and names are the property of their respective owners Information in this document is provided in connection with Intel products Intel assumes no liability whatsoever including infringement of any patent or copyright for sale and use of Intel products except as provided in Intel's Terms and Conditions of Sale for such products Intel retains the right to make changes to these specifications at any time without notice Microcomputer Products may have minor variations to this specification known as errata
COPYRIGHT
INTEL CORPORATION 1996
March 1996
Order Number 272336-004
8XC52 54 58
Table 1 Proliferations Options Standard 1 80C32 80C52 87C52 80C54 87C54 80C58 87C58 X X X X X X X -1 X X X X X X X -2 X X X X X X X -24 X X X X X X X -33 X X X X X X X
NOTES 1 35 -1 3 5 -2 0 5 -24 3 5 -33 3 5 MHz MHz MHz MHz MHz to to to to to 12 16 12 24 33 MHz MHz MHz MHz MHz 5V 5V 5V 5V 5V
g20% g20% g20% g20% g10%
272336 - 1
Figure 1 8XC5X Block Diagram
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PROCESS INFORMATION
This device is manufactured on P629 0 a CHMOS III-E process Additional process and reliability information is available in Intel's Components Quality and Reliability Handbook Order No 210997
PACKAGES
Part 8XC5X 87C5X 8XC5X 8XC5X Prefix P D N S Package Type 40-Pin Plastic DIP (OTP) 40-Pin CERDIP (EPROM) 44-Pin PLCC (OTP) 44-Pin QFP (OTP)
272336 - 3
PLCC
272336 -2
DIP
272336 - 4
Do not connect reserved pins
QFP Figure 2 Pin Connections
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pins that are externally pulled low will source current (IIL on the data sheet) because of the internal pullups Port 2 emits the high-order address byte during fetches from external Program Memory and during accesses to external Data Memory that use 16-bit addresses (MOVX DPTR) In this application it uses strong internal pullups when emitting 1's During accesses to external Data Memory that use 8-bit addresses (MOVX Ri) Port 2 emits the contents of the P2 Special Function Register Some Port 2 pins receive the high-order address bits during EPROM programming and program verification Port 3 Port 3 is an 8-bit bidirectional I O port with internal pullups The Port 3 output buffers can drive LS TTL inputs Port 3 pins that have 1's written to them are pulled high by the internal pullups and in that state can be used as inputs As inputs Port 3 pins that are externally pulled low will source current (IIL on the data sheet) because of the pullups Port 3 also serves the functions of various special features of the 8051 Family as listed below Port Pin P3 0 P3 1 P3 2 P3 3 P3 4 P3 5 P3 6 P3 7 Alternate Function RXD (serial input port) TXD (serial output port) INT0 (external interrupt 0) INT1 (external interrupt 1) T0 (Timer 0 external input) T1 (Timer 1 external input) WR (external data memory write strobe) RD (external data memory read strobe)
PIN DESCRIPTIONS
VCC Supply voltage VSS Circuit ground VSS1 Secondary ground (not on DIP) Provided to reduce ground bounce and improve power supply by-passing NOTE This pin is not a substitute for the VSS pin (pin 22) (Connection not necessary for proper operation ) Port 0 Port 0 is an 8-bit open drain bidirectional I O port As an output port each pin can sink several LS TTL inputs Port 0 pins that have 1's written to them float and in that state can be used as high-impedance inputs Port 0 is also the multiplexed low-order address and data bus during accesses to external Program and Data Memory In this application it uses strong internal pullups when emitting 1's and can source and sink several LS TTL inputs Port 0 also receives the code bytes during EPROM programming and outputs the code bytes during program verification External pullup resistors are required during program verification Port 1 Port 1 is an 8-bit bidirectional I O port with internal pullups The Port 1 output buffers can drive LS TTL inputs Port 1 pins that have 1's written to them are pulled high by the internal pullups and in that state can be used as inputs As inputs Port 1 pins that are externally pulled low will source current (IIL on the data sheet) because of the internal pullups In addition Port 1 serves the functions of the following special features of the 8XC5X Port Pin P1 0 P1 1 Alternate Function T2 (External Count Input to Timer Counter 2) Clock-Out T2EX (Timer Counter 2 Capture Reload Trigger and Direction Control)
RST Reset input A high on this pin for two machine cycles while the oscillator is running resets the device The port pins will be driven to their reset condition when a minimum VIHI voltage is applied whether the oscillator is running or not An internal pulldown resistor permits a power-on reset with only a capacitor connected to VCC ALE Address Latch Enable output pulse for latching the low byte of the address during accesses to external memory This pin (ALE PROG) is also the program pulse input during EPROM programming for the 87C5X In normal operation ALE is emitted at a constant rate of the oscillator frequency and may be used for external timing or clocking purposes Note however that one ALE pulse is skipped during each access to external Data Memory
Port 1 receives the low-order address bytes during EPROM programming and verifying Port 2 Port 2 is an 8-bit bidirectional I O port with internal pullups The Port 2 output buffers can drive LS TTL inputs Port 2 pins that have 1's written to them are pulled high by the internal pullups and in that state can be used as inputs As inputs Port 2
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If desired ALE operation can be disabled by setting bit 0 of SFR location 8EH With this bit set the pin is weakly pulled high However the ALE disable feature will be suspended during a MOVX or MOVC instruction idle mode power down mode and ICE mode The ALE disable feature will be terminated by reset When the ALE disable feature is suspended or terminated the ALE pin will no longer be pulled up weakly Setting the ALE-disable bit has no affect if the microcontroller is in external execution mode Throughout the remainder of this data sheet ALE will refer to the signal coming out of the ALE PROG pin and the pin will be referred to as the ALE PROG pin PSEN Program Store Enable is the read strobe to external Program Memory When the 8XC5X is executing code from external Program Memory PSEN is activated twice each machine cycle except that two PSEN activations are skipped during each access to external Data Memory EA VPP External Access enable EA must be strapped to VSS in order to enable the device to fetch code from external Program Memory locations 0000H to 0FFFFH Note however that if any of the Lock bits are programmed EA will be internally latched on reset EA should be strapped to VCC for internal program executions This pin also receives the programming supply voltage (VPP) during EPROM programming XTAL1 Input to the inverting oscillator amplifier XTAL2 Output from the inverting oscillator amplifier
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C1 C2 e 30 pF g10 pF for Crystals For Ceramic Resonators contact resonator manufacturer
Figure 3 Oscillator Connections To drive the device from an external clock source XTAL1 should be driven while XTAL2 floats as shown in Figure 4 There are no requirements on the duty cycle of the external clock signal since the input to the internal clocking circuitry is through a divide-by-two flip-flop but minimum and maximum high and low times specified on the data sheet must be observed An external oscillator may encounter as much as a 100 pF load at XTAL1 when it starts up This is due to interaction between the amplifier and its feedback capacitance Once the external signal meets the VIL and VIH specifications the capacitance will not exceed 20 pF
272336 - 6
Figure 4 External Clock Drive Configuration
IDLE MODE
The user's software can invoke the Idle Mode When the microcontroller is in this mode power consumption is reduced The Special Function Registers and the onboard RAM retain their values during Idle but the processor stops executing instructions Idle Mode will be exited if the chip is reset or if an enabled interrupt occurs
OSCILLATOR CHARACTERISTICS
XTAL1 and XTAL2 are the input and output respectively of a inverting amplifier which can be configured for use as an on-chip oscillator as shown in Figure 3 Either a quartz crystal or ceramic resonator may be used More detailed information concerning the use of the on-chip oscillator is available in Application Note AP-155 ``Oscillators for Microcontrollers'' Order No 230659
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Table 2 Status of the External Pins during Idle and Power Down Mode Idle Idle Power Down Power Down Program Memory Internal External Internal External ALE 1 1 0 0 PSEN 1 1 0 0 PORT0 Data Float Data Float PORT1 Data Data Data Data PORT2 Data Address Data Data PORT3 Data Data Data Data
POWER DOWN MODE
To save even more power a Power Down mode can be invoked by software In this mode the oscillator is stopped and the instruction that invoked Power Down is the last instruction executed The on-chip RAM and Special Function Registers retain their values until the Power Down mode is terminated On the 8XC5X either a hardware reset or an external interrupt can cause an exit from Power Down Reset redefines all the SFRs but does not change the onchip RAM An external interrupt allows both the SFRs and on-chip RAM to retain their values To properly terminate Power Down the reset or external interrupt should not be executed before VCC is restored to its normal operating level and must be held active long enough for the oscillator to restart and stabilize (normally less than 10 ms) With an external interrupt INT0 and INT1 must be enabled and configured as level-sensitive Holding the pin low restarts the oscillator but bringing the pin back high completes the exit Once the interrupt is serviced the next instruction to be executed after RETI will be the one following the instruction that put the device into Power Down
When the idle mode is terminated by a hardware
reset the device normally resumes program execution from where it left off up to two machine cycles before the internal reset algorithm takes control On-chip hardware inhibits access to internal RAM in this event but access to the port pins is not inhibited To eliminate the possibility of an unexpected write when Idle is terminated by reset the instruction following the one that invokes Idle should not be one that writes to a port pin or to external memory
ONCE MODE
The ONCE (``On-Circuit Emulation'') Mode facilitates testing and debugging of systems using the 8XC5X without the 8XC5X having to be removed from the circuit The ONCE Mode is invoked by 1) Pull ALE low while the device is in reset and PSEN is high 2) Hold ALE low as RST is deactivated While the device is in ONCE Mode the Port 0 pins float and the other port pins and ALE and PSEN are weakly pulled high The oscillator circuit remains active While the 8XC5X is in this mode an emulator or test CPU can be used to drive the circuit Normal operation is restored when a normal reset is applied
DESIGN CONSIDERATION
The window on the D87C5X must be covered by
an opaque label Otherwise the DC and AC characteristics may not be met and the device may be functionally impaired
NOTE For more detailed information on the reduced power modes refer to current Embedded Microcontrollers and Processors Handbook Volume I (Order No 270645) and Application Note AP-252 (Embedded Applications Handbook Order No 270648) ``Designing with the 80C51BH ''
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The optional burn-in is dynamic for a minimum time of 168 hours at 125 C with VCC e 6 9V g0 25V following guidelines in MIL-STD-883 Method 1015 Package types and EXPRESS versions are identified by a one- or two-letter prefix to the part number The prefixes are listed in Table 3 For the extended temperature range option this data sheet specifies the parameters which deviate from their commercial temperature range limits NOTE Intel offers Express Temperature specifications for all 8XC5X speed options except for 33 MHz
8XC5X EXPRESS
The Intel EXPRESS system offers enhancements to the operational specifications of the MCS 51 family of microcontrollers These EXPRESS products are designed to meet the needs of those applications whose operating requirements exceed commercial standards The EXPRESS program includes the commercial standard temperature range with burn-in and an extended temperature range with or without burn-in With the commercial standard temperature range operational characteristics are guaranteed over the temperature range of 0 C to a 70 C With the extended temperature range option operational characteristics are guaranteed over the range of b 40 C to a 85 C
Table 3 Prefix Identification Prefix P D N S TP TD TN TS LP LD LN LS Package Type Plastic Cerdip PLCC QFP Plastic Cerdip PLCC QFP Plastic Cerdip PLCC QFP Temperature Range Commercial Commercial Commercial Commercial Extended Extended Extended Extended Extended Extended Extended Extended Burn-In No No No No No No No No Yes Yes Yes Yes
NOTE Contact distributor or local sales office to match EXPRESS prefix with proper device EXAMPLES P80C52 indicates 80C52 in a plastic package and specified for commercial temperature range without burn-in TD80C52 indicates 80C52 in a Cerdip package and specified for extended temperature range without burn-in
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ABSOLUTE MAXIMUM RATINGS
Ambient Temperature Under Bias b 40 C to a 85 C Storage Temperature Voltage on EA VPP Pin to VSS Voltage on Any Other Pin to VSS IOL Per I O Pin
b 65 C to a 150 C 0V to a 13 0V b 0 5V to a 6 5V
NOTICE This data sheet contains preliminary information on new products in production The specifications are subject to change without notice Verify with your local Intel Sales office that you have the latest data sheet before finalizing a design
15 mA
Power Dissipation 1 5W (based on PACKAGE heat transfer limitations not device power consumption)
WARNING Stressing the device beyond the ``Absolute Maximum Ratings'' may cause permanent damage These are stress ratings only Operation beyond the ``Operating Conditions'' is not recommended and extended exposure beyond the ``Operating Conditions'' may affect device reliability
OPERATING CONDITIONS
Symbol TA Description Ambient Temperature Under Bias Commercial Express Supply Voltage 8XC5X-33 Oscillator Frequency 8XC5X 8XC5X-1 8XC5X-2 8XC5X-24 8XC5X-33 Min 0
b 40
Max
a 70 a 85
Units C C V V MHz MHz MHz MHz MHz
VCC fOSC
40 45 35 35 05 35 35
60 55 12 16 12 24 33
DC CHARACTERISTICS
Symbol VIL VIL1 VIH VIH1 VOL Parameter Input Low Voltage Input Low Voltage EA Input High Voltage (Except XTAL1 RST) Input High Voltage (XTAL1 RST)
(Over Operating Conditions) All parameter values apply to all devices unless otherwise indicated Min
b0 5
Typ (Note 4)
Max 0 2 VCC b 0 1 0 2 VCC b 0 3 VCC a 0 5 VCC a 0 5 03 0 45 10
Unit V V V V V V V V V V V V V
Test Conditions
0 0 2 VCC a 0 9 0 7 VCC
Output Low Voltage (Note 5) (Ports 1 2 and 3)
IOL e 100 mA (Note 1) IOL e 1 6 mA (Note 1) IOL e 3 5 mA (Note 1) IOL e 200 mA (Note 1) IOL e 3 2 mA (Note 1) IOL e 7 0 mA (Note 1) IOH e b 10 mA IOH e b 30 mA IOH e b 60 mA
VOL1
Output Low Voltage (Note 5) (Port 0 ALE PSEN)
03 0 45 10
VOH
Output High Voltage (Ports 1 2 and 3 ALE PSEN)
VCC b 0 3 VCC b 0 7 VCC b 1 5
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8XC52 54 58
DC CHARACTERISTICS
Symbol VOH1
(Over Operating Conditions) (Continued) All parameter values apply to all devices unless otherwise indicated Parameter Output High Voltage (Port 0 in External Bus Mode) Min VCC b 0 3 VCC b 0 7 VCC b 1 5 IIL ILI ITL Logical 0 Input Current (Ports 1 2 and 3) Input leakage Current (Port 0) Logical 1 to 0 Transition Current (Ports 1 2 and 3) Commercial Express RST Pulldown Resistor Pin Capacitance Power Supply Current Active Mode at 12 MHz (Figure 5) at 16 MHz at 24 MHz at 33 MHz (8XC5X-33) Idle Mode at 12 MHz (Figure 5) at 16 MHz at 24 MHz at 33 MHz (8XC5X-33) Power Down Mode 8XC5X-33 40 10
b 50
g10
Typ (Note 4)
Max
Unit V V V mA mA
Test Conditions IOH e b 200 mA IOH e b 3 2 mA IOH e b 7 0 mA VIN e 0 45V VIN e VIL or VIH
b 650 b 750
mA mA KX pF
VIN e 2V
RRST CIO ICC
225
1 MHz 25 C (Note 3)
15 20 28 35 5 6 7 7 5 5
30 38 56 56 75 95 13 5 15 75 50
mA mA mA mA mA mA mA mA mA mA
NOTES 1 Capacitive loading on Ports 0 and 2 may cause noise pulses above 0 4V to be superimposed on the VOLs of ALE and Ports 1 2 and 3 The noise is due to external bus capacitance discharging into the Port 0 and Port 2 pins when these pins change from 1 to 0 In applications where capacitive loading exceeds 100 pF the noise pulses on these signals may exceed 0 8V It may be desirable to qualify ALE or other signals with a Schmitt Triggers or CMOS-level input logic 2 Capacitive loading on Ports 0 and 2 cause the VOH on ALE and PSEN to drop below the 0 9 VCC specification when the address lines are stabilizing 3 See Figures 6-9 for test conditions Minimum VCC for Power Down is 2V 4 Typicals are based on a limited number of samples and are not guaranteed The values listed are at room temperature and 5V 5 Under steady state (non-transient) conditions IOL must be externally limited as follows 10mA Maximum IOL per port pin Maximum IOL per 8-bit port Port 0 26 mA Ports 1 2 and 3 15 mA 71 mA Maximum total IOL for all output pins If IOL exceeds the test condition VOL may exceed the related specification Pins are not guaranteed to sink current greater than the listed test conditions
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272336 - 7
NOTE ICC Max at 33 MHz is at 5V g10% VCC while ICC Max at 24 MHz and below is at 5V g20% VCC
Figure 5 8XC52 54 58 ICC vs Frequency
272336 - 8 All other pins disconnected TCLCH e TCHCL e 5 ns
Figure 6 ICC Test Condition Active Mode
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272336 -9 All other pins disconnected TCLCH e TCHCL e 5 ns All other pins disconnected
272336 - 10
Figure 7 ICC Test Condition Idle Mode
Figure 8 ICC Test Condition Power Down Mode VCC e 2 0V to 6 0V
272336 - 11
Figure 9 Clock Signal Waveform for ICC Tests in Active and Idle Modes TCLCH e TCHCL e 5 ns
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L Logic level LOW or ALE P PSEN Q Output Data R RD signal T Time V Valid W WR signal X No longer a valid logic level Z Float For example TAVLL e Time from Address Valid to ALE Low TLLPL e Time from ALE Low to PSEN Low
EXPLANATION OF THE AC SYMBOLS
Each timing symbol has 5 characters The first character is always a `T' (stands for time) The other characters depending on their positions stand for the name of a signal or the logical status of that signal The following is a list of all the characters and what they stand for A Address C Clock D Input Data H Logic level HIGH I Instruction (program memory contents)
AC CHARACTERISTICS
(Over Operating Conditions Load Capacitance for Port 0 ALE PROG and PSEN e 100 pF Load Capacitance for All Other Outputs e 80 pF)
EXTERNAL MEMORY CHARACTERISTICS
All parameter values apply to all devices unless otherwise indicated In this table 8XC5X refers to 8XC5X 8XC5X-1 and 8XC5X-2 Oscillator Symbol Parameter 12 MHz 24 MHz 33 MHz Min 35 35 05 35 35 127 43 21 2 TCLCL b 40 Variable Max 12 16 12 24 33 MHz MHz MHz MHz MHz ns Units
Min Max Min Max Min Max 1 TCLCL Oscillator Frequency 8XC5X 8XC5X-1 8XC5X-2 8XC5X-24 8XC5X-33 TLHLL TAVLL ALE Pulse Width Address Valid to ALE Low 8XC5X 8XC5X-24 8XC5X-33 Address Hold After ALE Low 8XC5X -24 8XC5X-33 ALE Low to Valid Instruction In 8XC5X 8XC5X-24 8XC5X-33
43 12 5
TCLCL b 40 TCLCL b 30 TCLCL b 25
ns ns ns
TLLAX
53
12 5
TCLCL b 30 TCLCL b 25
ns ns
TLLIV
234 91 56
4 TCLCL b 100 4 TCLCL b 75 4 TCLCL b 65
ns ns ns
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EXTERNAL MEMORY CHARACTERISTICS (Continued) All parameter values apply to all devices unless otherwise indicated
Oscillator Symbol Parameter 12 MHz Min TLLPL ALE Low to PSEN Low 8XC5X -24 8XC5X-33 PSEN Pulse Width PSEN Low to Valid Instruction In 8XC5X 8XC5X-24 8XC5X-33 Input Instruction Hold After PSEN Input Instruction Float After PSEN 8XC5X 8XC5X-24 8XC5X-33 Address to Valid Instruction In 8XC5X -24 8XC5X-33 PSEN Low to Address Float RD Pulse Width WR Pulse Width 400 400 0 Max 24 MHz Min Max 33 MHz Min Max Min Variable Max Units
53 205
12 5 80 46
TCLCL b 30 TCLCL b 25 3 TCLCL b 45
ns ns ns
TPLPH TPLIV
145 35 35 0 0 0
3 TCLCL b 105 3 TCLCL b 90 3 TCLCL b 55
ns ns ns ns
TPXIX
TPXIZ
59 21 5
TCLCL b 25 TCLCL b 20 TCLCL b 25
ns ns ns
TAVIV
312 10
103 71 10 10
5 TCLCL b 105 5 TCLCL b 80 10
ns ns ns
TPLAZ
TRLRH TWLWH
150 150
82 82
6 TCLCL b 100 6 TCLCL b 100
ns ns
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EXTERNAL MEMORY CHARACTERISTICS (Continued) All parameter values apply to all devices unless otherwise indicated
Oscillator Symbol Parameter 12 MHz 24 MHz 33 MHz Min Variable Max Units
Min Max Min Max Min Max TRLDV RD Low to Valid Data In 8XC5X 8XC5X-24 8XC5X-33 Data Hold After RD Data Float After RD 8XC5X -24 8XC5X-33 ALE Low to Valid Data In 8XC5X 8XC5X-24 33 Address to Valid Data In 8XC5X 8XC5X-24 33 ALE Low to RD or WR Low Address to RD or WR Low 8XC5X 8XC5X-24 8XC5X-33 200 0
252 113 61 0 0 0
5 TCLCL b 165 5 TCLCL b 95 5 TCLCL b 90
ns ns ns ns
TRHDX TRHDZ
107
23 35
2 TCLCL b 60 2 TCLCL b 25
ns ns
TLLDV
517 243 150
8 TCLCL b 150 8 TCLCL b 90
ns ns
TAVDV
585 285 300 75 175 41 180 140 3 TCLCL b 50
9 TCLCL b 165 9 TCLCL b 90 3 TCLCL a 50
ns ns ns
TLLWL TAVWL
203 77 46
4 TCLCL b 130 4 TCLCL b 90 4 TCLCL b 75
ns ns ns
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EXTERNAL MEMORY CHARACTERISTICS (Continued) All parameter values apply to all devices unless otherwise indicated
Oscillator Symbol Parameter 12 MHz Min TQVWX Data Valid to WR Transition 8XC5X 8XC5X-24 33 Data Hold After WR 8XC5X 8XC5X-24 8XC5X-33 Data Valid to WR High 8XC5X 8XC5X-24 33 RD Low to Address Float RD or WR High to ALE High 8XC5X 8XC5X-24 8XC5X-33 Max 24 MHz Min Max 33 MHz Min Max Min Variable Max Units
33 12 0
TCLCL b 50 TCLCL b 30
ns ns
TWHQX
33 7 3
TCLCL b 50 TCLCL b 35 TCLCL b 27
ns ns ns
TQVWH
433 222 0 0 142 0
7 TCLCL b 150 7 TCLCL b 70 0
ns ns ns
TRLAZ TWHLH
43
123 12 71 5 55
TCLCL b 40 TCLCL b 30 TCLCL b 25
TCLCL a 40 TCLCL a 30 TCLCL a 25
ns ns ns
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EXTERNAL PROGRAM MEMORY READ CYCLE
272336 - 25
EXTERNAL DATA MEMORY READ CYCLE
272336 - 26
EXTERNAL DATA MEMORY WRITE CYCLE
272336 - 27
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SERIAL PORT TIMING - SHIFT REGISTER MODE Test Conditions
Symbol
Over Operating Conditions Load Capacitance e 80 pF
Oscillator
Parameter
12 MHz Min Max
24 MHz Min 0 50 Max
33 MHz Min 0 36 Max Min 12 TCLCL
Variable Max
Units
TXLXL
Serial Port Clock Cycle Time Output Data Setup to Clock Rising Edge Output Data Hold after Clock Rising Edge 8XC5X 8XC5X-24 33 Input Data Hold After Clock Rising Edge Clock Rising Edge to Input Data Valid
1
ms
TQVXH
700
284
167
10 TCLCL b 133
ns
TXHQX
50 34 0 0 10 0
2 TCLCL b 117 2 TCLCL b 50 0
ns ns ns
TXHDX
TXHDV
700
283
167
10 TCLCL b 133
ns
SHIFT REGISTER MODE TIMING WAVEFORMS
272336 - 15
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EXTERNAL CLOCK DRIVE
Symbol 1 TCLCL Parameter Oscillator Frequency 8XC5X 8XC5X-1 8XC5X-2 8XC5X-24 8XC5X-33 High Time 8XC5X-24 33 Low Time 8XC5X-24 33 Rise Time 8XC5X-24 8XC5X-33 Fall Time 8XC5X-24 8XC5X-33 Min 35 35 05 35 35 20 0 35 TOSC 20 0 35 TOSC Max 12 16 12 24 33 0 65 TOSC 0 65 TOSC 20 10 5 20 10 5 Units MHz MHz MHz MHz MHz MHz ns ns ns ns ns ns ns ns ns ns
TCHCX TCLCX TCLCH
TCHCL
EXTERNAL CLOCK DRIVE WAVEFORM
272336 - 16
AC TESTING INPUT OUTPUT WAVEFORMS
FLOAT WAVEFORMS
272336 - 19 AC Inputs during testing are driven at VCC b 0 5V for a Logic ``1'' and 0 45V for a Logic ``0'' Timing measurements are made at VIH min for a Logic ``1'' and VIL max for a Logic ``0''
272336 - 20 For timing purposes a port pin is no longer floating when a 100 mV change from load voltage occurs and begins to float when a 100 mV change from the loaded VOH VOL level occurs IOL IOH e g20 mA
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PROGRAMMING THE EPROM
The part must be running with a 4 MHz to 6 MHz oscillator The address of an EPROM location to be programmed is applied to address lines while the code byte to be programmed in that location is applied to data lines Control and program signals must be held at the levels indicated in Table 4 Normally EA VPP is held at logic high until just before ALE PROG is to be pulsed The EA VPP is raised to VPP ALE PROG is pulsed low and then EA VPP is returned to a high (also refer to timing diagrams) NOTES
DEFINITION OF TERMS
ADDRESS LINES P1 0 - P1 7 P2 0 - P2 5 respectively for A0 - A13 DATA LINES P0 0 - P0 7 for D0 - D7 CONTROL SIGNALS RST PSEN P2 6 P2 7 P3 3 P3 6 P3 7 PROGRAM SIGNALS ALE PROG EA VPP
Exceeding the VPP maximum for any amount of
time could damage the device permanently The VPP source must be well regulated and free of glitches Table 4 EPROM Programming Modes Mode Program Code Data Verify Code Data Program Encryption Array Address 0- 3FH Program Lock Bits Bit 1 Bit 2 Bit 3 Read Signature Byte RST H H H H H H H PSEN L L L L L L L H H ALE PROG EA VPP 12 75V H 12 75V 12 75V 12 75V 12 75V H P2 6 L L L H H H L P2 7 H L H H H L L P3 3 H L H H H H L P3 6 H H L H L H L P3 7 H H H H L L L
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272336 - 21
See Table 4 for proper input on these pins
Figure 10 Programming the EPROM
PROGRAMMING ALGORITHM
Refer to Table 4 and Figures 10 and 11 for address data and control signals set up To program the 87C5X the following sequence must be exercised 1 Input the valid address on the address lines 2 Input the appropriate data byte on the data lines 3 Activate the correct combination of control signals 4 Raise EA VPP from VCC to 12 75V g0 25V 5 Pulse ALE PROG 5 times for the EPROM array and 25 times for the encryption table and the lock bits
Repeat 1 through 5 changing the address and data for the entire array or until the end of the object file is reached
PROGRAM VERIFY
Program verify may be done after each byte or block of bytes is programmed In either case a complete verify of the programmed array will ensure reliable programming of the 87C5X The lock bits cannot be directly verified Verification of the lock bits is done by observing that their features are enabled
272336 - 22
Figure 11 Programming Signal's Waveforms
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Erasing the EPROM also erases the encryption array and the program lock bits returning the part to full functionality
ROM and EPROM Lock System
The program lock system when programmed protects the onboard program against software piracy The 80C5X has a one-level program lock system and a 64-byte encryption table See line 2 of Table 5 If program protection is desired the user submits the encryption table with their code and both the lock-bit and encryption array are programmed by the factory The encryption array is not available without the lock bit For the lock bit to be programmed the user must submit an encryption table The 87C5X has a 3-level program lock system and a 64-byte encryption array Since this is an EPROM device all locations are user-programmable See Table 5
Reading the Signature Bytes
The 8XC5X has 3 signature bytes in locations 30H 31H and 60H To read these bytes follow the procedure for EPROM verify but activate the control lines provided in Table 4 for Read Signature Byte Location 30H 31H 60H Device All All 80C52 87C52 Contents 89H 58H 12H 52H 14H 54H 18H 58H
Encryption Array
Within the EPROM array are 64 bytes of Encryption Array that are initially unprogrammed (all 1's) Every time that a byte is addressed during a verify 6 address lines are used to select a byte of the Encryption Array This byte is then exclusive-NOR'ed (XNOR) with the code byte creating an Encryption Verify byte The algorithm with the array in the unprogrammed state (all 1's) will return the code in its original unmodified form For programming the Encryption Array refer to Table 4 (Programming the EPROM) When using the encryption array one important factor needs to be considered If a code byte has the value 0FFH verifying the byte will produce the encryption byte value If a large block ( l 64 bytes) of code is left unprogrammed a verification routine will display the contents of the encryption array For this reason all unused code bytes should be programmed with some value other than 0FFH and not all of them the same value This will ensure maximum program protection
80C54 87C54 80C58 87C58
Erasure Characteristics (Windowed Packages Only)
Erasure of the EPROM begins to occur when the chip is exposed to light with wavelength shorter than approximately 4 000 Angstroms Since sunlight and fluorescent lighting have wavelengths in this range exposure to these light sources over an extended time (about 1 week in sunlight or 3 years in roomlevel fluorescent lighting) could cause inadvertent erasure If an application subjects the device to this type of exposure it is suggested that an opaque label be placed over the window The recommended erasure procedure is exposure to ultraviolet light (at 2537 Angstroms) to an integrated dose of at least 15 W-sec cm2 Exposing the EPROM to an ultraviolet lamp of 12 000 mW cm2 rating for 30 minutes at a distance of about 1 inch should be sufficient Erasure leaves all the EPROM Cells in a 1's state
Program Lock Bits
The 87C5X has 3 programmable lock bits that when programmed according to Table 5 will provide different levels of protection for the on-chip code and data
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8XC52 54 58
Table 5 Program Lock Bits and the Features Program Lock Bits LB1 1 2 U P LB2 U U LB3 U U Protection Type No Program Lock features enabled (Code verify will still be encrypted by the Encryption Array if programmed ) MOVC instructions executed from external program memory are disabled from fetching code bytes from internal memory EA is sampled and latched on Reset and further programming of the EPROM is disabled Same as 2 also verify is disabled Same as 3 also external execution is disabled
3 4
P P
P P
U P
NOTE Any other combination of the lock bits is not defined
EPROM PROGRAMMING AND VERIFICATION CHARACTERISTICS
(TA e 21 C to 27 C VCC e 5V g20% VSS e 0V) Symbol VPP IPP 1 TCLCL TAVGL TGHAX TDVGL TGHDX TEHSH TSHGL TGHSL TGLGH TAVQV TELQV TEHQZ TGHGL Parameter Programming Supply Voltage Programming Supply Current Oscillator Frequency Address Setup to PROG Low Address Hold after PROG Data Setup to PROG Low Data Hold after PROG (Enable) High to VPP VPP Setup to PROG Low VPP Hold after PROG PROG Width Address to Data Valid ENABLE Low to Data Valid Data Float after ENABLE PROG High to PROG Low 0 10 4 48TCLCL 48TCLCL 48TCLCL 48TCLCL 48TCLCL 10 10 90 110 48TCLCL 48TCLCL 48TCLCL ms ms ms ms Min 12 5 Max 13 0 75 6 Units V mA MHz
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8XC52 54 58
EPROM PROGRAMMING AND VERIFICATION WAVEFORMS
272336 - 23
5 pulses for the EPROM array 25 pulses for the encryption table and lock bits
Thermal Impedance
All thermal impedance data is approximate for static air conditions at 1W of power dissipation Values will change depending on operating conditions and applications See the Intel Packaging Handbook (Order Number 240800) for a description of Intel's thermal impedance test methodology Package P D N S iJA 45 45 46 87 96 90 C C C C C C W W W W W W iJC 16 15 16 18 24 22 C C C C C C W W W W W W Device All All All 52 54 58
The following differences exist between this datasheet (272336-003) and the previous version (272336-002) 1 Removed 8XC5X-3 and 8XC5X-20 from the data sheet 2 Included 8XC5X-24 and 8XC5X-33 devices 3 Removed the statement ``The 80C32 standard -1 and -2 and 80C52 standard -1 and -2 do not have the '' from the section DESIGN CONSIDERATION The following differences exist between this datasheet (272336-002) and the previous version (272336-001) 1 Removed 8XC5X-L from the data sheet 2 Included features not available in 80C32-Standard -1 and -2 and 80C52-Standard -1 and -2 devices This 8XC5X datasheet (272336-001) replaces the following datasheets 87C52 80C52 80C32 87C52 80C52 80C32 EXPRESS 87C52-20 80C52-20 80C32-20 87C54 80C54 87C54 80C54 EXPRESS 87C54-20 -3 80C54-20 -3 87C54 80C58 87C58 80C58 EXPRESS 87C58-20 -3 80C58-20 -3 270757-003 270868-002 272272-001 270816-004 270901-001 270941-003 270900-003 270902-001 272029-002
DATA SHEET REVISION HISTORY
Data sheets are changed as new device information becomes available Verify with your local Intel sales office that you have the latest version before finalizing a design or ordering devices
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