![Advanced Card ACR89U-A2 Reference Manual Download Page 50](http://html1.mh-extra.com/html/advanced-card/acr89u-a2/acr89u-a2_reference-manual_2855854050.webp)
ACR89U-A2 – Reference Manual
Version 1.01
www.acs.com.hk
Page 50 of 57
4.1.2.4.
Access PC/SC Compliant Tags (ISO 14443-4)
All ISO 14443-4 compliant cards (PICCs) would understand the ISO 7816-4 APDUs. The ACR89U-A2
Reader needs to communicate with the ISO 14443-4 compliant cards through exchanging ISO 7816-4
APDUs and Responses. ACR89U-A2 will handle the ISO 14443 Parts 1-4 Protocols internally.
MIFARE 1K, 4K, MIFARE MINI and MIFARE Ultralight tags are supported through the T=CL
emulation. Simply treat the MIFARE tags as standard ISO 14443-4 tags. For more information, please
refer to topic “PICC Commands for MIFARE Classic Memory Tags”.
ISO 7816-4 APDU Format
Command
Class
INS
P1
P2
Lc
Data In
Le
ISO 7816 Part 4
Command
Length of
the Data In
Expected length of
the Response
Data
ISO 7816-4 Response Format (Data + 2 bytes)
Response
Data Out
Result
Response Data
SW1
SW2
Common ISO 7816-4 Response Codes
Results
SW1 SW2
Meaning
Success
90 00h
The operation is completed successfully.
Error
63 00h
The operation has failed.
Typical sequence may be:
1. Present the Tag and Connect the PICC Interface.
2. Read /Update the memory of the tag.
Step 1:
Connect the tag.
The ATR of the tag is 3B 88 80 01
00 00 00 00
33 81 81
00 3Ah
In which,
The Application Data of ATQB = 00 00 00 00h,
protocol information of ATQB = 33 81 81h.
It is an ISO
14443-4 Type B tag.
Step 2:
Send an APDU, Get Challenge.
<< 00 84 00 00 08h
>> 1A F7 F3 1B CD 2B A9 58h [90 00h]
Note: For ISO 14443-4 Type A tags, the ATS can be obtained by using the APDU “FF CA 01 00 00h.”