AT89C5131A-RDTIL datasheet(182/184 Pages) ATMEL

182 / 184 page

182

AT89C5131A-L

4338F–USB–08/07

Features................................................................................................. 1

Description ............................................................................................ 2

Block Diagram....................................................................................... 3

Pinout Description ................................................................................ 4

Pinout.................................................................................................................... 4

Signals .................................................................................................................. 6

Typical Application ............................................................................. 11

Recommended External components................................................................. 11

PCB Recommandations ..................................................................................... 12

Clock Controller.................................................................................. 13

Introduction ......................................................................................................... 13

Oscillator............................................................................................................. 13

PLL ..................................................................................................................... 14

Registers............................................................................................................. 16

SFR Mapping ....................................................................................... 18

Dual Data Pointer Register ................................................................ 25

Program/Code Memory ...................................................................... 27

External Code Memory Access .......................................................................... 27

Flash Memory Architecture................................................................................. 28

Overview of FM0 Operations .............................................................................. 29

Registers............................................................................................................. 35

Flash EEPROM Memory ..................................................................... 36

General Description ............................................................................................ 36

Features.............................................................................................................. 36

Flash Programming and Erasure........................................................................ 36

Flash Registers and Memory Map...................................................................... 37

Flash Memory Status.......................................................................................... 40

Memory Organization ......................................................................................... 40

EEPROM Data Memory....................................................................... 41

Description.......................................................................................................... 41

Write Data in the Column Latches ...................................................................... 41

Programming ...................................................................................................... 41

Read Data........................................................................................................... 41

Registers............................................................................................................. 42

In-System Programming (ISP) ........................................................... 43

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