User's Manual

Company Atmel Beijing
Model
AT88CRF-USB232 Date Ver Rev
Designer James Liu 17-April-2008
Approval Lucy Wang 17-April-2008
1 1
User Manual 2
Connector Pin Layout
8Pin Shield GND ( for cable shield )
7Pin Signal GND ( USB )
6Pin USB D+ ( USB )
5Pin USB D- ( USB )
4Pin VBUS (5Vdc) ( USB / RS232C )
3Pin TXD ( RS232C )
2Pin RXD ( RS232C )
1Pin Signal GND ( RS232C )
Interface
USB mode :
Pin 4-8 have to be connected.
RS-232C mode :
Pin 1-4 and Pin8 have to be connected.
CN1
LED2LED1
CN2
1 8 Pin