Philips 80C851 83C851 Data Sheet
Summary
This high-performance 8-bit microcontroller utilizes an advanced 80C51 architecture and features integrated EEPROM for reliable non-volatile data storage. Designed for embedded systems requiring robust control solutions, it offers crucial functionalities like two independent 16-bit timers/counters, full duplex communication, mask-programmable ROM, and multiple low-power operating modes. This manual provides comprehensive technical specifications, pin configurations, and operational guidelines, making it an essential resource for hardware engineers designing complex electronic devices.
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INTEGRATED CIRCUITS
80C851/83C851 CMOS single-chip 8-bit microcontroller with on-chip EEPROM
Product specification 1998 Jul 03 Supersedes data of 1992 Nov 25 IC20 Data Handbook
Page Summary Contents For Philips 80C851 83C851 Data Sheet
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INTEGRATED CIRCUITS 80C851/83C851 CMOS single-chip 8-bit microcontroller with on-chip EEPROM Product specification 1998 Jul 03 Supersedes data of 1992 Nov 25 IC20 Data Handbook
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Philips Semiconductors Product specification CMOS single-chip 8-bit microcontroller with on-chip EEPROM DESCRIPTION FEATURES The Philips 80C851/83C851 is a 80C51 based architecture high-performance mi...
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Philips Semiconductors Product specification CMOS single-chip 8-bit microcontroller with on-chip EEPROM BLOCK DIAGRAM IO FREQUENCY REFERENCE COUNTERS XTAL2 XTAL1 T0 T1 OSCILLATOR PROGRAM DATA TWO 16-B...
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Philips Semiconductors Product specification CMOS single-chip 8-bit microcontroller with on-chip EEPROM PIN CONFIGURATIONS PLASTIC LEADED CHIP PLASTIC QUAD FLAT PACK CARRIER PIN FUNCTIONS PIN FUNCTION...
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Philips Semiconductors Product specification CMOS single-chip 8-bit microcontroller with on-chip EEPROM PIN DESCRIPTION PIN NO. MNEMONIC DIP LCC QFP TYPE NAME AND FUNCTION VSS 16, 39 Ground: 0V refere...
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Philips Semiconductors Product specification CMOS single-chip 8-bit microcontroller with on-chip EEPROM Table 1. 8XC851 Special Function Registers DIRECT BIT ADDRESS, SYMBOL, OR ALTERNATIVE PORT FUNCT...
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Philips Semiconductors Product specification CMOS single-chip 8-bit microcontroller with on-chip EEPROM EEPROM EADRH register address is F3H. The EADRL The ETIM register address is F5H. Table 2 regist...
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Philips Semiconductors Product specification CMOS single-chip 8-bit microcontroller with on-chip EEPROM ECNTRL1ECNTRL2ECNTRL3– –EWPEEINTIFE ECNTRL0 Bit Symbol Function ECNTRL.7 IFE Active high EEPROM ...
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Philips Semiconductors Product specification CMOS single-chip 8-bit microcontroller with on-chip EEPROM Security Facilities the EA pin low or by passing the 4K mode to internal access within the MOVC ...
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Philips Semiconductors Product specification CMOS single-chip 8-bit microcontroller with on-chip EEPROM OSCILLATOR (i.e., the EWP bit has to be reset before INTERRUPT SYSTEM activating the idle or pow...
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Philips Semiconductors Product specification CMOS single-chip 8-bit microcontroller with on-chip EEPROM DC ELECTRICAL CHARACTERISTICS Tamb = 0°C to +70°C (VDD = 5V ±10%), –40°C to +85°C (VDD = 5V ±10%...
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Philips Semiconductors Product specification CMOS single-chip 8-bit microcontroller with on-chip EEPROM AC ELECTRICAL CHARACTERISTICS1, 2 16 MHz Version 16MHz CLOCK VARIABLE CLOCK SYMBOL FIGURE PARAME...
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Philips Semiconductors Product specification CMOS single-chip 8-bit microcontroller with on-chip EEPROM AC ELECTRICAL CHARACTERISTICS1, 2 24 MHz Version 24MHz CLOCK VARIABLE CLOCK SYMBOL FIGURE PARAME...
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Philips Semiconductors Product specification CMOS single-chip 8-bit microcontroller with on-chip EEPROM EXPLANATION OF THE Logic level low, or ALE PSEN AC SYMBOLS Output data Each timing symbol has fi...
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Philips Semiconductors Product specification CMOS single-chip 8-bit microcontroller with on-chip EEPROM t WHLH t LLWL t WLWH t AVLL t LLAX t QVWX t WHQX t QVWH PORT 0 A0–A7 FROM RI OR DPL DATA OUT A0–...
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Philips Semiconductors Product specification CMOS single-chip 8-bit microcontroller with on-chip EEPROM Table 4. External Clock Drive XTAL1 VARIABLE CLOCK VARIABLE CLOCK f = 1.2 – 16MHz f = 3.5 – 24MH...
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Philips Semiconductors Product specification CMOS single-chip 8-bit microcontroller with on-chip EEPROM VDD VDD IDD IDD VDD VDD VDD VDD RST VDD EA EA (NC) XTAL2 (NC) XTAL2 CLOCK SIGNAL XTAL1 CLOCK SIG...
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Philips Semiconductors Product specification CMOS single-chip 8-bit microcontroller with on-chip EEPROM DIP40: plastic dual in-line package; 40 leads (600 mil) SOT129-1 1998 Jul 03
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Philips Semiconductors Product specification CMOS single-chip 8-bit microcontroller with on-chip EEPROM PLCC44: plastic leaded chip carrier; 44 leads SOT187-2 1998 Jul 03
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Philips Semiconductors Product specification CMOS single-chip 8-bit microcontroller with on-chip EEPROM QFP44: plastic quad flat package; 44 leads (lead length 1.3 mm); body 10 x 10 x 1.75 mm SOT307-2...
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Philips Semiconductors Product specification CMOS single-chip 8-bit microcontroller with on-chip EEPROM NOTES 1998 Jul 03
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Philips Semiconductors Product specification CMOS single-chip 8-bit microcontroller with on-chip EEPROM Data sheet status Data sheet Product Definition [1] status status Objective Development This dat...
Manual Details
| Brand | Philips |
|---|---|
| Pages | 22 |
| File Size | 182.09 KB |
| Published | July 04, 2026 |
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Frequently Asked Questions
What types of memory does the 80C851/83C851 contain?
It includes a 4k × 8 ROM, a 128 × 8 RAM, and a 256 × 8-bit EEPROM (Electrically Erasable Programmable Read Only memory).
How can the device conserve power when not actively used?
It supports an 'idle mode' which freezes the CPU while allowing peripherals like RAM, timers, and serial port to function, and a 'power-down mode' to save contents but freeze the oscillator.
Is the ROM code customizable?
Yes, it allows for mask-programmable ROM code with protection circuits and supports block erase capability.
What are the available clock frequencies for operation?
The device can operate at 1.2 to 16MHz or 3.5 to 24MHz, depending on the package variation.