AT89C5131A-M(2005) View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

AT89C5131A-M
(Rev.:2005)

8-bit Flash Microcontroller with Full Speed USB Device

Atmel Corporation 

Block Diagram

AT89C5130A/31A-M

XTAL1

XTAL2

ALE

PSEN

EA

RD (2)

WR (2)

(2) (2)

(1) (1) (1) (1) (3) (3) (1) (1) (1) (1)

EEPROM ERAM

EUART

+

BRG

RAM 16/32Kx8Flash

256x8

4Kx8

1Kx8

PCA Timer2 TWI

SPI

CPU

C51

CORE

Timer 0 INT

Timer 1 Ctrl

Parallel I/O Ports & Ext. Bus

Port 0Port 1 Port 2 Port 3 Port 4

(2) (2) (2) (2)

Key

Board

Watch

Dog

USB

Regu-

lator

VREF

Notes: 1. Alternate function of Port 1

2. Alternate function of Port 3

3. Alternate function of Port 4

3

4337C–USB–02/05

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