Smart card ATR parsing

Enter an ATR (Answer To Reset) and I will parse it for you.

Results

Parsing ATR:

3B F8 18 00 FF 81 31 FE 45 4A 43 4F 50 76 32 34 31 43
TS = 0x3BDirect Convention
T0 = 0xF8Y(1): b1111, K: 8 (historical bytes)
TA(1) = 0x18Fi=372, Di=12, 31 cycles/ETU (129032 bits/s at 4.00 MHz, 161290 bits/s for fMax=5 MHz)
TB(1) = 0x00VPP is not electrically connected
TC(1) = 0xFFExtra guard time: 255 (special value)
TD(1) = 0x81Y(i+1) = b1000, Protocol T=1
----
TD(2) = 0x31Y(i+1) = b0011, Protocol T=1
----
TA(3) = 0xFEIFSC: 254
TB(3) = 0x45Block Waiting Integer: 4 - Character Waiting Integer: 5
----
Historical bytes4A 43 4F 50 76 32 34 31
Category indicator byte: 0x4A (proprietary format) "COPv241"
TCK = 0x43correct checksum

Possibly identified card:

3B F8 18 00 FF 81 31 FE 45 4A 43 4F 50 76 32 34 31 43

VIVOtech SAM

NXP JCOP V241

NXP J3A081 JavaCard (contact interface)

Canonical URL JSON output

Again

Submit another ATR


See also

The parsing code is part of pyscard and is available at parseATR.py.

The list of known ATR is also available online at smartcard_list.txt.

My blog contains a serie of artickes about ATR bytes.