MF0AES2001DUD datasheet(44/72 Pages) NXP

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NXP Semiconductors

MF0AES(H)20

MIFARE Ultralight AES contactless limited-use IC

These times exclude the end of communication of the PCD.

Without secure messaging

With secure messaging

FDTACK min

n=9 [1]

FDTACK max

TTimeOut

FDTNAK min

n=9

FDTNAK max

TTimeOut

TimeOut

5 ms

TCMD

708 µs

1388 µs

TACK

57 µs

869 µs

TNAK

57 µs

Table 41. INCR_CNT timing

[1]

Refer to Section 9.2

The increment value argument is a 4-byte field to support the same command structure as the WRITE

command. As the counter width is only 3 byte, the last transmitted, most significant byte is ignored.

Any increment value is allowed. The final counter value is FFFFFFh. No further increment is possible after the

final value is reached. Also, trying to increment the current value by a number which would exceed the final

value leads to a NAK response and the counter remains unchanged. An increment by 0 is allowed and leaves

the counter unchanged.

The order of bytes in the increment argument follows the same order that the bytes are sent via the

communication interface. This means from the LSB (IncrValue0) to MSB (IncValue3), where the last valid byte is

actually IncrValue2. As an example, an increment of the counter 00h by 01h, is formulated as INCR CNT 00 01

00 00 00.

If secure messaging enabled, a CMAC on the INCR_CNT command is required.

MF0AES_H_20

All information provided in this document is subject to legal disclaimers.

Product data sheet

Rev. 3.2 — 28 March 2023

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