SRT512是一款符合ISO14443标准的13.56MHz短程无接触式内存芯片，具备512位EEPROM及防碰撞功能。其特性包括：847kHz子载波频率，106Kbps数据传输速率，8位芯片ID防碰撞系统，两个带自动防撕裂保护的计数器，64位唯一标识符，512位写保护EEPROM，读写块操作，内部调谐电容，百万次擦写周期，40年数据保留，自定时编程周期，典型编程时间为5ms。
SRT512
SR176* | SRi4K | SRi512 | SRiX4K | SRiX512 | SRT512
13.56 MHz short-range contactless memory chip with 512-bit EEPROM and anticollision functions
Datasheet : SRT512.pdf
Features
- ISO 14443-2 Type B air interface compliant
- ISO 14443-3 Type B frame format compliant
- 13.56 MHz carrier frequency
- 847 kHz subcarrier frequency
- 106 Kbit/second data transfer
- 8 bit Chip_ID based anticollision system
- 2 count-down binary counters with automated anti tearing protection
- 64-bit unique identifier
- 512-bit EEPROM with write protect feature
- Read_block and Write_block (32 bits)
- Internal tuning capacitor
- 1 million erase/write cycles
- 40-year data retention
- Self-timed programming cycle
- 5 ms typical programming time
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