Rainbow-electronics AT89C5131 Manual do Utilizador descarregar pdf (Página 172)

AT89C5131

4136A–USB–03/03

Table of Contents

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

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

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

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

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

Signals ...................................................................................................................7

SFR Mapping ....................................................................................... 12

Clock Controller .................................................................................. 19

Introduction......................................................................................................... 19

Oscillator............................................................................................................. 19

PLL ..................................................................................................................... 20

Registers..............................................................................................................22

Dual Data Pointer Register ................................................................ 24

Program/Code Memory ...................................................................... 26

External Code Memory Access .......................................................................... 26

Flash Memory Architecture................................................................................. 27

Overview of FM0 Operations.............................................................................. 28

Registers............................................................................................................. 34

Flash EEPROM Memory ..................................................................... 35

General Description ............................................................................................ 35

Features.............................................................................................................. 35

Flash Programming and Erasure........................................................................ 35

Flash Registers and Memory Map.......................................................................36

Flash Memory Status.......................................................................................... 39

Memory Organization ......................................................................................... 39

Boot Process ...................................................................................................... 40

In-System Programming (ISP).............................................................................42

In-application Programming Method................................................................... 45

EEPROM Data Memory ....................................................................... 51

Description.......................................................................................................... 51

Write Data in the Column Latches...................................................................... 51

Programming ...................................................................................................... 51

Read Data........................................................................................................... 51

Registers..............................................................................................................52

1 2 ... 167 168 169 170 171 172 173 174 175

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Rainbow-electronics AT89C5131 Manual do Utilizador Página 172