ST25TB02K by ST Microelectronics

The ST25TB02K is a wireless memory device, powered by an external radio signal. It features a 2048-bit user EEPROM, organized into 64 blocks of 32 bits each. The device operates on a 13.56 MHz carrier frequency. Incoming data is demodulated and decoded from the received amplitude shift keying (ASK) signal, while outgoing data is generated via bit phase shift keying (BPSK) coding of an 847 kHz sub-carrier. The received ASK wave is 10% modulated. The data transfer rate between the ST25TB02K and the reader is 106 kbit/s in both reception and emission modes.

• Complies with ISO 14443-2 Type B air interface
• Adheres to ISO 14443-3 Type B frame format
• Operates on a 13.56 MHz carrier frequency
• Uses an 847 kHz subcarrier frequency
• Supports 106 Kbit/second data transfer rate
• Employs an 8-bit Chip_ID based anticollision system
• Includes 2 count-down binary counters with anti-tearing protection
• Features a 64-bit Unique Identifier
• Offers a 2048-bit EEPROM with write protection
• Supports Read_block and Write_block operations (32 bits each)
• Incorporates an internal tuning capacitor of 68 pF
• Endures 1 million erase/write cycles
• Ensures 40-year data retention
• Utilizes a self-timed programming cycle
• Achieves a typical programming time of 5 ms