P83C524IFA datasheet(6/76 Pages) PHILIPS

6 / 76 page

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PROGRAMMABLE I/O

64K-BYTE BUS

EXPANSION

CONTROL

OSCILLATOR

AND

TIMING

CPU

internal

interrupts

PROGRAM

MEMORY

(32 K x 8 ROM/

EPROM)

DATA

MEMORY

(256 x 8 RAM)

PROGRAMMABLE

SERIAL PORT

FULL DUPLEX UART

SYNCHRONOUS

SHIFT

TWO 16-BIT

TIMER/EVENT

COUNTERS

XTAL2

XTAL1

frequency

reference

counters

external interrupts

control

parallel ports,

address/data bus

and I/O pins

serial in

serial out

INT1

INT0

MBC455

DATA

MEMORY

(256 x 8 RAM)

16-BIT

TIMER

WATCHDOG

TIMER

T2EX

RST

BIT-LEVEL

INTERFACE

I C

AUX - RAM

RAM

shared with Port 3

SDA

SCL

Fig.1 Block diagram.

PROGRAM

MEMORY

(32 K x 8 ROM

or 16 K x 8 ROM)

P83C524

P80C528

P83C528

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