Datasheet

NXP Semiconductors
MF0ICU2
MIFARE Ultralight C - Contactless ticket IC
MF0ICU2 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2019. All rights reserved.
Product data sheet Rev. 3.3 — 30 July 2019
COMPANY PUBLIC 137633 22 / 36
001aan015
CRCAddrPCD Cmd
PICC ,,ACK''
368 µs
PICC ,,NAK''
NAK
Time out
T
TimeOut
T
NAK
T
ACK
59 µs
ACK
59 µs
Figure 13. COMPATIBILITY WRITE part 1
001aan016
CRCPCD Data
PICC ,,ACK''
1558 µs
PICC ,,NAK''
NAK
Time out
T
TimeOut
T
NAK
T
ACK
59 µs
ACK
59 µs
Figure 14. COMPATIBILITY WRITE part 2
Table 21. COMPATIBILITY_WRITE command
Name Code Description Length
Cmd A0h compatibility write 1 byte
Addr - page address ‘02h’ to ‘2Fh’ 1 byte
CRC - CRC according to Ref. 2 2 bytes
Data - 16-byte Data, only least significant 4
bytes are written
16 bytes
NAK see Table 15 see Section 8.3 4-bit
Table 22. COMPATIBILITY_WRITE timing
These times exclude the end of communication of the PCD.
T
ACK
min T
ACK
max T
NAK min
T
NAK max
T
TimeOut
COMPATIBILITY_WRITE part 1 n=9 T
TimeOut
n=9 T
TimeOut
5 ms
COMPATIBILITY_WRITE part 2 n=9 T
TimeOut
n=9 T
TimeOut
10 ms