Instructions

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5.6.11 Ultralight EV1 PWD_AUTH
Function: A protected memory area can be accessed only after a successful password
authentication using the PWD_AUTH command.
Host sends:
Frame 0x4A PWD Checksum
PWD: 4byte, Ultralight EV1 card password.
Success:
Frame 0x4A Checksum
Failure:
Frame 0xB5 Checksum
Example:
Send: 0x00 08 00 4A FF FF FF FF 42
Return: 0x00 06 01 4A 00 00 4D
5.6.12 Ultralight EV1 READ_SIG
Function: The READ_SIG command returns an IC-specific, 32-byte ECC signature, to
verify NXP Semiconductors as the silicon vendor. The signature is programmed at chip
production and cannot be changed afterwards.
Host sends:
Frame 0x4B Checksum
Success:
Frame 0x4B Signature Checksum
Signature: 32 bytes signature data.
Failure:
Frame 0xB4 Checksum
Example:
Send: 0x00 04 00 4B 4F
Return: 0x00 24 01 4B 6F 44 89 DA 45 59 EF C9 87 1A DB D0 CF 66 4D 47 F7 0A C9 EC
2E EC 7C FD 81 FF 74 4B 2E 28 97 1F 4D
5.6.13 Ultralight EV1 CHECK_TEARING_EVENT
Function: The CHECK_TEARING_EVENT command enables the application to identify if
a tearing event happened on a specified counter element. It takes the counter number as single
argument and returns a specified valid flag for this counter. If the returned valid flag is not equal
to the predefined value, a tearing event happened. Note, although a tearing event might have
happened on the counter, a valid value corresponding to the last valid counter status is still
available using the READ_CNT command.
Host sends:
Frame 0x8C Address Checksum