Advanced Card Systems Limited ACR1251U-C ユーザーズマニュアル
ACR1251U-C User Manual
info@acs.com.hk
Version 1.00.00
www.acs.com.hk
Page 6 of 13
3.0. Architecture
AT90SCR is for main processor for communication with PC, and control the contactless chip,
communication with ICC contact card and
communication with ICC contact card and
peripherals. PN512 act as a contactless chip to
perform the communication between contactless tags and
AT90SCR
For communication architecture, the protocol between ACR1251U-C and PC is using CCID protocol.
All the communication between ICC and PICC are PCSC
All the communication between ICC and PICC are PCSC
Compliant
PICC and ICC are working exclusively, when ICC inserted, PICC will be disabled.