AT89S51-24JU Просмотр технического описания (PDF) - Atmel Corporation

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Компоненты Описание

производитель

AT89S51-24JU

8-bit Microcontroller with 4K Bytes In-System Programmable Flash

Atmel Corporation 

3. Block Diagram

VCC

GND

RAM ADDR.

REGISTER

P0.0 - P0.7

PORT 0 DRIVERS

P2.0 - P2.7

PORT 2 DRIVERS

RAM

PORT 0

LATCH

PORT 2

LATCH

FLASH

AT89S51

B

REGISTER

ACC

STACK

POINTER

PROGRAM

ADDRESS

REGISTER

PSEN

ALE/PROG

EA / VPP

RST

TMP2

TMP1

BUFFER

ALU

PSW

INTERRUPT, SERIAL PORT,

AND TIMER BLOCKS

PC

INCREMENTER

PROGRAM

COUNTER

TIMING

AND

CONTROL

INSTRUCTION

REGISTER

WATCH

DOG

PORT 3

LATCH

PORT 1

LATCH

ISP

PORT

DUAL DPTR

PROGRAM

LOGIC

OSC

PORT 3 DRIVERS

PORT 1 DRIVERS

P3.0 - P3.7

P1.0 - P1.7

3

2487D–MICRO–6/08

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