Datasheet

Product data sheet

COMPANY PUBLIC

Rev. 3.0 — 2 May 2011

196330 15 of 39

NXP Semiconductors

MF1S50yyX

MIFARE Classic 1K - Mainstream contactless smart card IC

9. Command overview

The MIFARE Classic card activation follows the ISO/IEC 14443 Type A. After the

MIFARE Classic card has been selected, it can either be deactivated using the

ISO/IEC 14443 Halt command, or the MIFARE Classic commands can be performed. For

more details about the card activation refer to Ref. 4

9.1 MIFARE Classic command overview

All MIFARE Classic commands use the MIFARE CRYPTO1 and require an

authentication.

All available commands for the MIFARE Classic are shown in Table 9

All commands use the coding and framing as described in Ref. 3 and Ref. 4 if not

otherwise specified.

9.2 Timings

The timing shown in this document are not to scale and values are rounded to 1 μs.

All given times refer to the data frames including start of communication and end of

communication, but do not include the encoding (like the Miller pulses).

Consequently a data frame sent by the PCD contains the start of communication (1

“start bit”) and the end of communication (one logic 0 + 1 bit length of unmodulated

carrier).

A data frame sent by the PICC contains the start of communication (1 “start bit”) and the

end of communication (1 bit length of no subcarrier).

Table 9. Command overview

Command ISO/IEC 14443 Command code

(hexadecimal)

Request REQA 26h (7 bit)

Wake-up WUPA 52h (7 bit)

Anticollision CL1 Anticollision CL1 93h 20h

Select CL1 Select CL1 93h 70h

Anticollision CL2 Anticollision CL2 95h 20h

Select CL2 Select CL2 95h 70h

Halt Halt 50h 00h

Authentication with Key A - 60h

Authentication with Key B - 61h

Personalize UID Usage - 40h

MIFARE Read - 30h

MIFARE Write - A0h

MIFARE Decrement - C0h

MIFARE Increment - C1h

MIFARE Restore - C2h

MIFARE Transfer - B0h