User's Manual

HF Mifare Easy Module V1.0

ACG Identification Technologies GmbH 11

5 The Mifare transponder family

The Mifare transponder family consists of various 13.56 MHz transponders IC, all

according to ISO 14443.

5.1 State Diagram

All Mifare cards use following state diagram.

Figure 5-1: State diagram

POWER OFF

Reset

REQA

READY

Select

ACTIVE

Authenticat

AUTHENTICATED

Anticollision loop

Tag interfacing

commands

HALT

WAKE UP

read/write/…

Select

reader instruction set

ISO 14443 commands

IDLE

(within antenna range)