User Manual

4
AT8xC5122/23
4202E–SCR–06/06
Note: The PLCC28 pinout is common to AT8xC5122 and AT83C5123 products
Table 1. Product versions
Features AT83C5122 AT83EC5122 AT85C5122 AT89C5122 AT89C5122DS AT83C5123 AT83EC5123
Packages
VQFP64
QFN64
PLCC28
Die Form
VQFP64
PLCC28
PLCC68
VQFP64
PLCC28
Die Form
VQFP64
QFN64
PLCC28
VQFP64
QFN64
VQFP32
QFN32
PLCC28
Die Form
QFN32
VQFP32
PLCC28
Program memory 32KB ROM 30KB ROM 32KB CRAM
32KB
E2PROM
32KB E2PROM 30KB ROM 30KB ROM
Internal Data E2PROM No 512 Bytes No No No No 512 Bytes
Embedded bootloader No No Yes Yes Yes No No
Features
VQFP32,
QFN32
packages
Features not available :
- Keyboard Interface
- Master/Slave SPI
Interface
- External Program Memory
Access
Reduced features :
- Only 12 I/O with up to 4
LED Outputs with
Programmable Current
PLCC68,
VQFP64,QFN64
packages
All features are available
All features are
available
except External
Program Memory
Access
PLCC28 package
Features not available :
- Alternate Smart Card Interface
- Keyboard Interface
- Master/Slave SPI Interface
- External Program Memory Access
Reduced features :
- Only 7 I/O with up to 4 LED Outputs with Programmable Current