SRI512芯片卡, SRT512芯片卡, ISO14443的TypeB, 短距離

13.56MHz short distance contactless memory chip with 512-bit EEPROM and anticollision functions

The SRI512/SRT512 chip is a contactless memory, powered by an externally transmitted radio wave. It contains a 512-bit user EEPROM. The memory is organized as 16 塊 32 位. The SRI512 is accessed via the 13.56 MHz carrier. Incoming data are demodulated and decoded from the received amplitude shift keying (問) modulation signal and outgoing data are generated by load variation using bit phase shift keying (BPSK) coding of a 847KHz subcarrier. The received ASK wave is 10% modulated. The data transfer rate between the SRI512 and the reader is 106 Kbit/s in both reception and emission modes.
The SRI512 chip follows the ISO 14443-2 Type B recommendation for the radio-frequency power and signal interface.
The SRI512 chip is specifically designed for short range applications that need re-usable products. The SRI512 chip includes an anticollision mechanism that allows it to detect and select tags present at the same time within range of the reader. Using the STMicroelectronics single chip coupler, CRX14, it is easy to design a reader and build a contactless system.

芯片的特點
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
8bit Chip_ID based anticollision system
2 Count-down binary counters with automated antitearing protection
64-bit Unique Identifier
512-bit EEPROM with write protect feature
Read_block and Write_block (32 位)
Internal tuning capacitor
1million erase/write cycles
40-year data retention
Self-timed programming cycle
5ms typical programming time

主要應用
ST SRI512/SRT512 chip work in a variety of ways, has a high stability and a wide range of applications, is an induction type intelligent locks, 門禁系統, 考勤系統, 鑑定, 產權界定, 過程控制, 停車處, 後勤, 動物識別, 工業自動化, 會議簽到, electronic label, supermarket, 倉庫管理, 人員管理, 安全系統, transportation bus cards, 捷運卡, 消費卡, such as the first choice of RFID products.

競爭優勢:
經驗豐富的員工;
優良的品質;
最好的價錢;
交貨快;
大容量和廣泛的產品;
接受小訂單;
根據客戶的需求ODM和OEM產品.

印花: 膠印, 帕通油墨印刷, 專色印刷, 絲印, 熱敏打印, 噴墨打印, 數字印刷.
安全功能: 水印, 激光燒蝕, 全息圖/ OVD, UV油墨, 光變油墨, 隱藏條碼/條碼面具, 分級彩虹, 微型文本, 扭索飾, 燙金.
其他: IC芯片數據初始化/加密, 可變數據, 個性化磁條程序性, 簽名板, 條碼, 序列號, 壓花, DOD代碼, NBS凸碼, 模切.