Mifare® Ultralight C - Elatec TWN3 Multi ISO Technical Manual

9.5 Mifare® Ultralight C
A Mifare® Ultralight C transponder consists of 48 pages with 4 bytes each. The UID is read-only and
is also mapped into the memory area. The 16 bytes Triple-DES key is stored in the last 4 pages of the
transponder.
Page Byte 0 Byte 1
00h
SN0
01h
SN3
02h
BCC1 Internal
03h
OTP0
04h
Data0
05h
Data4
27h
Data140 Data141
28h
Lock2
29h
CNT
2Ah
AUTH0
2Bh
AUTH1
2Ch
Key1/K0 Key1/K1
2Dh
Key1/K4 Key1/K5
2Eh
Key2/K0 Key2/K1
2Fh
Key2/K4 Key2/K5
Byte 2 Byte 3
SN1 SN2
SN4 SN5
Lock0
OTP1 OTP2
Data1 Data2
Data5 Data6
Data142 Data143
Lock3 RFU
CNT RFU
RFU RFU
RFU RFU
Key1/K2 Key1/K3
Key1/K6 Key1/K7
Key2/K2 Key2/K3
Key2/K6 Key2/K7
Elatec GmbH
Access rights
BCC0 Read only
SN6 Read only
Lock1 Read only / Lock
OTP3 One time programmable
Data3 Read / Write
Data7 Read / Write
Read / Write
Read / Write
RFU Read / Write
RFU Read / Write
RFU Read / Write
RFU Read / Write
Write only
Write only
Write only
Write only
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