P83C851 View Datasheet(PDF) - Philips Electronics

Part Name

Description

Manufacturer

P83C851

CMOS single-chip 8-bit microcontroller with on-chip EEPROM

Philips Electronics 

Philips Semiconductors

CMOS single-chip 8-bit microcontroller

with on-chip EEPROM

BLOCK DIAGRAM

FREQUENCY

REFERENCE

XTAL2 XTAL1

OSCILLATOR

AND

TIMING

PROGRAM

MEMORY

(4K x 8 ROM)

DATA

MEMORY

(128 x 8 RAM)

Product specification

80C851/83C851

COUNTERS

T0

T1

TWO 16-BIT

TIMER/EVENT

COUNTERS

EEPROM

(256 x 8)

CPU

INTERNAL

INTERRUPTS

64K BYTE BUS

EXPANSION

CONTRTOL

PROGRAMMABLE I/O

PROG SERIAL PORT

FULL DUPLEX UART

SYNCHRONOUS SHIFT

INT0 INT1

EXTERNAL

INTERRUPTS

LOGIC SYMBOL

CONTROL

VDD

XTAL1

VSS

XTAL2

RxD

TxD

INT0

INT1

T0

T1

WR

RD

RST

EA

PSEN

ALE

PARALLEL PORTS,

ADDRESS/DATA BUS

AND I/O PINS

SERIAL IN SERIAL OUT

SHARED WITH

PORT 3

ADDRESS AND

DATA BUS

ADDRESS BUS

1998 Jul 03

3

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