The ATA5577 is a contactless read/write identification integrated circuit (IDIC®) for applications in the 125-kHz or 134-kHz frequency bands. A single coil connected to the chip serves as the IC’s power supply and bi-directional communication interface. Together, the antenna and the chip form a transponder or tag. The 363-bit EEPROM (11 blocks of 33 bits each) on the chip can be read and written block by block from the base station (reader). Data is transmitted from the IDIC (uplink) using load modulation. This is achieved by damping the RF field with a resistive load between the two terminal coils 1 and 2. The IC receives and decodes serial base station commands (downlink), which are encoded as a bit stream encoded at 100% amplitude modulation (OOK) pulse intervals.
- 330-bit user writable memory, the encoded content can be protected with password
- Compatible with E5550, T5557, T5567 etc.
- Can be used to emulate EM-ID card, configurable for ISO/IEC 11784/785 compatibility,
- Various personalization is available.