Datasheet

NXP Semiconductors

MF0ICU2

MIFARE Ultralight C - Contactless ticket IC

Product data sheet Rev. 3.3 — 30 July 2019

COMPANY PUBLIC 137633 19 / 36

Answer value Answer explanation

2h NAK for EEPROM write error

1h NAK for parity or CRC error

0h NAK for any other error

After every NAK, the MF0ICU2 performs an internal reset and returns to IDLE or HALT

state.

Remark: Any 4-bit response different from Ah shall be interpreted as NAK, although not

all 4-bit values are detailed in Table 15

8.4 Summary of device identification data

For more details on the values below please refer to Ref. 2, Ref. 3 and Ref. 4.

Table 16. Summary of relevant data for device identification

Code Length Value Binary Format Remark

ATQA 2 Byte 0044h 0000 0000 0100 0100

CT 1 Byte 88h 1000 1000 Cascade Tag, ensures

collision with cascade

level 1 products

SAK (casc. level 1) 1 Byte 04h 0000 0100 ‘1’ indicates additional

cascade level

SAK (casc. level 2) 1 Byte 00h 0000 0000 indicates complete UID

and MIFARE Ultralight

functionality

Manufacturer Byte 1 Byte 04h 0000 0100 indicates NXP

Semiconductors as

manufacturer

9 MIFARE Ultralight C - Contactless ticket IC commands

9.1 MIFARE Ultralight C - Contactless ticket IC card activation

The ATQA and SAK values are identical as for MF0ICU1 (see Ref. 8). For information on

ISO 14443 card activation, see Ref. 4. Summary of data relevant for device identification

is given in Section 8.4.

9.2 READ

The READ command takes the page address as a parameter. Only addresses 00h to

2Bh are decoded. For higher addresses the MF0ICU2 returns a NAK. The MF0ICU2

responds to the READ command by sending 16 bytes starting from the page address

defined in the command (e.g. if ADR is 03h, pages 03h, 04h, 05h, 06h are returned). The

command structure is shown in Figure 11 and Table 17.

Table 18 shows the required timing.