MF0AES2001DUD datasheet(39/72 Pages) NXP

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NXP Semiconductors

MF0AES(H)20

MIFARE Ultralight AES contactless limited-use IC

10.4 WRITE

The WRITE command requires a block address, and writes 4 bytes of data into the addressed MIFARE

Ultralight AES page. The WRITE command is shown in Figure 14.

Table 35 shows the required timing.

aaa-006286

CRC

Addr

PCD

Cmd

PICC ,,ACK''

PICC ,,NAK''

NAK

Time out

TimeOut

NAK

ACK

Data

CMAC CRC

FDTACK

FDT

TACK

TNAK

TCMD

FDTACK

TACK

CMAC

Figure 14. WRITE

Name

Code

Description

Length

Cmd

A2h

write one page

1 byte

Addr

page address

1 byte

Data

data

4 bytes

[CMAC]

Optional: If secure messaging is enabled by set

of SEC_MSG_ACT

[8 bytes]

CRC

CRC according to [2]

2 bytes

Table 33. WRITE command

Name

Code

Description

Length

ACK / NAK

see Table 21

see Section 9.3

4-bit

[CMAC]

Optional: If secure messaging is enabled by

set of SEC_MSG_ACT. Note that the ACK is

replaced by a MAC, calculated over just the

CmdCtr, and CRC calculated over the MAC

bytes.

[8 bytes]

[CRC]

CRC according to [2]

[2 bytes]

Table 34. WRITE response

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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