87C524 查看數據表（PDF） - Philips Electronics

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87C524

80C51 8-bit microcontrollers 16K/32K, 512 OTP, I2C, watchdog timer

Philips Electronics 

Philips Semiconductors

80C51 8-bit microcontrollers

16K/32K, 512 OTP, I2C, watchdog timer

Product specification

87C524/87C528

BLOCK DIAGRAM

FREQUENCY

REFERENCE

XTAL2 XTAL1

OSCILLATOR

AND

TIMING

PROGRAM

MEMORY

(32K x 8

EPROM)

RAM

DATA

MEMORY

(256 x 8)

AUX–RAM

DATA

MEMORY

(256 x 8)

COUNTERS

T0

T1

T2 T2EX

RST

TWO 16-BIT

TIMER/EVENT

COUNTERS

16-BIT TIMER/

EVENT COUNTER

WATCHDOG

TIMER

CPU

INTERNAL

INTERRUPTS

64K-BYTE BUS

EXPANSION

CONTROL

INT0 INT1

EXTERNAL

INTERRUPTS

CONTROL

PROGRAMMABLE I/O

PROGRAMMABLE

SERIAL PORT

FULL DUPLEX UART

SYNCHRONOUS SHIFT

BIT-LEVEL

I2C

INTERFACE

PARALLEL PORTS,

ADDRESS/DATA BUS

AND I/O PINS

SERIAL IN

SERIAL OUT

SHARED WITH

PORT 3

SDA SCL

LOGIC SYMBOL

VDD VSS

XTAL1

XTAL2

RxD

TxD

INT0

INT1

T0

T1

WR

RD

RST

EA

PSEN

ALE

ADDRESS AND

DATA BUS

T2

T2EX

SCL

SDA

ADDRESS BUS

SU00165

SU00166

1999 Jul 23

3

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