A9211B
ISO/IEC 14443A RFID TAG IC
General Description
A9211B is a contactless RFID Tag IC for use with proximity coupling device according to ISO/IEC
14443A standard. The communication protocol complies with parts 2 and 3 of the ISO/IEC 14443A
specification.
Anti-collision
A9211B’s anti-collision function allows multiple RFID tags operating in reader’s magnetic field
simultaneously. The anti-collision function enables the detection and operation of A9211B when
other A9211B equipped tags are also present.
Cascaded Unique Identification Number
A9211B’s unique identification number (UID) is 7 bytes long and supports cascade level-2 format
according to ISO / IEC 14443-3.
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Ver. 1.0