Page 1
User Manual 1
“AT88CRF-USB232” RFID reader has two kinds of interface.
And the interface is selected automatically by the first command.
If the reader received USB commands after power on,
the interface is fixed to USB 1.1.
If the reader received RS-232C commands after power on,
the interface is fixed to RS-232C.
The software version of this document is
“USB/RS232 Reader.V1.04”.
Company Atmel Beijing
Model
AT88CRF-USB232 Date Ver Rev
Designer James Liu 17-April-2008
Approval Lucy Wang 17-April-2008
1 1
Page 2
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 )
LED2LED1
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.
CN2
CN1
1 8 Pin
Company Atmel Beijing
Model
AT88CRF-USB232 Date Ver Rev
Designer James Liu 17-April-2008
Approval Lucy Wang 17-April-2008
1 1
Page 3
User Manual 3
Interface condition
USB
The condition is compliant with USB 1.1.
RS 232C
Baud rate : 38400 bps
Data length : 8 bit
Parity : none
Stop bit : 1 bit
LED condition
LED1 (Blue)
LED2LED1
This LED show the Field status.
ON : Field ON.
OFF: Field Off.
LED2 (Green)
ON : Power is supplied.
OFF: Power is not supplied.
CN1
18 Pin
Company Atmel Beijing
Model
AT88CRF-USB232 Date Ver Rev
Designer James Liu 17-April-2008
Approval Lucy Wang 17-April-2008
1 1
Page 4
User Manual 4
Application Software
For controlling this reader , the DLL file”HG_Crypto_Reader.dll” is prepared.
This program supports three kinds of command.
1) Open port ( Select USB or RS-232C )
2) Close port
3) Communication function
Field open , Field Close , SW status check (USB only) , RFID communication , etc.
More detail information is described in the Software Manual of AT88CRF-USB232.
Company Atmel Beijing
Model
AT88CRF-USB232 Date Ver Rev
Designer James Liu 17-April-2008
Approval Lucy Wang 17-April-2008
1 1
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