P83CL781HDH 데이터 시트보기 (PDF) - Philips Electronics

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P83CL781HDH

Low voltage 8-bit microcontrollers with UART and I2C-bus

Philips Electronics 

Philips Semiconductors

Low voltage 8-bit microcontrollers with

UART and I2C-bus

5 BLOCK DIAGRAM

Product specification

P83CL781; P83CL782

handbook, full pagewidth

XTAL1

XTAL2

EA

ALE

PSEN

WR

3

RD

3

RST

AD0 to 7

0

A8 to 15

2

T0

T1 INT0 INT1

3

3

3

3

MLA601

TWO

16-BIT

TIMER/

EVENT

COUNTERS

(T0, T1)

CPU

80C51

core

excluding

ROM/RAM

PROGRAM

MEMORY

16 kbyte

ROM

DATA

MEMORY

256 byte

RAM

VDD

8-bit internal bus

P83CL781

P83CL782

PARALLEL

I/O PORTS

AND

EXTERNAL

BUS

SERIAL

UART

PORT

16-BIT

TIMER/

EVENT

COUNTER

I2C

INTERFACE

VSS

33

P0 P1 P2 P3 TXD RXD

1

1

T2 T2EX

1

1

SCL SDA

0 alternative function of Port 0

1 alternative functions of Port 1

2 alternative function of Port 2

3 alternative function of Port 3

Fig.1 Block diagram.

1997 Mar 14

5

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