S87C654-5A44 datasheet(6/28 Pages) PHILIPS

Part #	S87C654-5A44

Description	CMOS single-chip 8-bit microcontroller

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Manufacturer	PHILIPS [NXP Semiconductors]

Direct Link	http://www.nxp.com

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Philips Semiconductors

Product specification

87C654

CMOS single-chip 8-bit microcontroller

1996 Aug 16

6

BLOCK DIAGRAM

64K BYTE BUS

EXPANSION

CONTRTOL

PROG SERIAL PORT

FULL DUPLEX UART

SYNCHRONOUS SHIFT

PROGRAMMABLE I/O

CPU

OSCILLATOR

AND

TIMING

PROGRAM

MEMORY

DATA

MEMORY

(256 x 8 RAM)

TWO 16-BIT

TIMER/EVENT

COUNTERS

I2C SERIAL I/O

SDA

SCL

SHARED

WITH

PORT 1

T0

T1

COUNTERS

XTAL2

XTAL1

FREQUENCY

REFERENCE

INTERNAL

INTERRUPTS

INT0

INT1

EXTERNAL

INTERRUPTS

CONTROL

PARALLEL PORTS,

ADDRESS/DATA BUS

AND I/O PINS

SERIAL IN

SERIAL OUT

SHARED WITH

PORT 3

(16K x 8

EPROM)

SU00271

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S87C654-5A44 Datasheet(PDF) 6 Page - NXP Semiconductors

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