P83C749EBP 查看數據表（PDF） - Philips Electronics

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P83C749EBP

80C51 8-bit microcontroller family 2K/64 OTP/ROM, 5 channel 8-bit A/D, PWM, low pin count

Philips Electronics 

Philips Semiconductors

80C51 8-bit microcontroller family

2K/64 OTP/ROM, 5 channel 8-bit A/D, PWM, low pin count

Preliminary specification

83C749/87C749

BLOCK DIAGRAM

VCC

VSS

RAM ADDR

REGISTER

RAM

P0.0–P0.4

PORT 0

DRIVERS

PORT 0

LATCH

PWM

PORT 2

LATCH

ROM/

EPROM

B

REGISTER

ACC

TMP2

TMP1

STACK

POINTER

ALU

PSW

PCON

TCON

IE

TH0 TL0

RTH RTL

INTERRUPT AND

TIMER BLOCKS

RST

TIMING

AND

CONTROL

PD

OSCILLATOR

ADC

X1

X2

AVSS AVCC

PORT 1

LATCH

PORT 1

DRIVERS

P1.0–P1.7

PORT 3

LATCH

PORT 3

DRIVERS

P3.0–P3.7

PROGRAM

ADDRESS

REGISTER

BUFFER

PC

INCRE-

MENTER

PROGRAM

COUNTER

DPTR

SU00305

1998 Apr 23

3

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