AT83C5122_08 ATMEL [ATMEL Corporation], AT83C5122_08 Datasheet - Page 205

• Manufacturer Part Number: AT83C5122_08
• Description: C51 Microcontroller with USB and Smart Card Reader Interfaces
• Manufacturer: ATMEL [ATMEL Corporation]

Table of Contents
4202F–SCR–07/2008
Features ................................................................................................. 1
Pinout .................................................................................................... 5
Typical Applications ........................................................................... 15
16
Memory Organization ......................................................................... 18
Special Function Registers (SFR’s) .................................................. 31
Clock Controller .................................................................................. 39
I/O Port Definition ............................................................................... 51
Smart Card Interface Block (SCIB) ................................................... 62
Reference Documents .......................................................................................... 2
Product Description .............................................................................................. 3
AT8xC5122/AT83R5122 Block Diagram .............................................................. 4
AT83C5123 Block Diagram .................................................................................. 4
High Pin Count Package Description.................................................................... 5
Low Pin Count Package Description .................................................................. 10
Pin Description.................................................................................................... 11
Recommended External components ................................................................. 15
USB Keyboard with Smart Card Reader Using AT83R5122, AT8xC5122/AT89C5122DS
USB Smart Card Reader Using the AT83C5123 Version................................... 17
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
Introduction ......................................................................................................... 31
AT8xC5122 Version............................................................................................ 32
AT83C5123 Version ........................................................................................... 33
SFR’s Description ............................................................................................... 34
On-Chip Oscillator .............................................................................................. 39
Phase Lock Loop (PLL) ...................................................................................... 40
Clock Tree Architecture ...................................................................................... 41
Registers............................................................................................................. 48
Port Configuration............................................................................................... 55
Registers............................................................................................................. 59
Block Diagram .................................................................................................... 63
AT83R5122, AT8xC5122/23
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