AT89C5122D-RDRUM datasheet(205/208 Pages) ATMEL

205 / 208 page

205

4202F–SCR–07/2008

AT83R5122, AT8xC5122/23

Table of Contents

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

Reference Documents .......................................................................................... 2

Product Description .............................................................................................. 3

AT8xC5122/AT83R5122 Block Diagram .............................................................. 4

AT83C5123 Block Diagram ..................................................................................4

Pinout .................................................................................................... 5

High Pin Count Package Description.................................................................... 5

Low Pin Count Package Description .................................................................. 10

Pin Description.................................................................................................... 11

Typical Applications ........................................................................... 15

Recommended External components .................................................................15

USB Keyboard with Smart Card Reader Using AT83R5122, AT8xC5122/AT89C5122DS

USB Smart Card Reader Using the AT83C5123 Version................................... 17

Memory Organization ......................................................................... 18

Program Memory Managament .......................................................................... 18

Data Memory Managament ................................................................................ 19

Dual Data Pointer Register (DDPTR) ................................................................. 20

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

AT8xC5122’s CRAM and E2PROM Versions ....................................................24

AT83R5122, AT8xC5122’s ROM Version .......................................................... 28

AT83C5123 Version ........................................................................................... 30

Special Function Registers (SFR’s) .................................................. 31

Introduction ......................................................................................................... 31

AT8xC5122 Version............................................................................................ 32

AT83C5123 Version ........................................................................................... 33

SFR’s Description ............................................................................................... 34

Clock Controller .................................................................................. 39

On-Chip Oscillator .............................................................................................. 39

Phase Lock Loop (PLL) ...................................................................................... 40

Clock Tree Architecture ...................................................................................... 41

Registers............................................................................................................. 48

I/O Port Definition ............................................................................... 51

Port Configuration............................................................................................... 55

Registers............................................................................................................. 59

Smart Card Interface Block (SCIB) ................................................... 62

Block Diagram .................................................................................................... 63

AT89C5122D-RDRUM 数据表(PDF) 205 Page - ATMEL Corporation

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