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[原创] ST ST25DV04 NFC RFID标签解决方案

关键词:NFC RFID标签 ISO/IEC 15693 Wi-Fi BLE

时间:2019-10-30 11:16:37       来源:中电网

ST公司的ST25DV04K,ST25DV16K和ST25DV64K(ST25DVxxx)是NFC RFID标签,代表4Kb,16Kb和64Kb电可擦可编程存储器(EEPROM),提供两个接口:第一个是I2C串行链接,由DC电源工作;第二个是RF链接,当ST25DV04K,ST25DV16K和ST25DV64K用作无接触存储器,由接收到的载体电磁波工作.在I2C模式,ST25DV04K,ST25DV16K和ST25DV64K用户存储器包含多达512比特,2048比特和8192比特,它们可分成4个灵活和可保护的区域.在RF模式,依据ISO/IEC 15693或NFC论坛type 5建议,ST25DV04K,ST25DV16K和ST25DV64K用户存储器分别包含多达128比特,512比特和2048比特区块,分成4个灵活和可保护的区域.由于具有256比特挥发性缓冲器(也称作Mailbox ),ST25DV04K, ST25DV16K和ST25DV64K可提供在RF和接触界间的快速传输.此外,它们的GPO引脚提供接触界的数据通知如进入事件,类RF场检测,进程中RF活性或Mailbox信息可用性.当外接条件许可时也可具有能量收获特性.主要用在NFC RFID通信.本文介绍了ST25DVxxx系列主要特性,框图,以及评估板ST25DV04K Discovery kit主要特性和电路图.

The ST25DV04K, ST25DV16K and ST25DV64K devices are NFC RFID tags offering respectively 4 Kbit, 16 Kbit,and 64 Kbit of electrically erasable programmable memory (EEPROM). ST25DV04K, ST25DV16K andST25DV64K offer two interfaces. The first one is an I2C serial link and can be operated from a DC power supply.

The second one is a RF link activated when ST25DV04K, ST25DV16K or ST25DV64K act as a contactlessmemory powered by the received carrier electromagnetic wave.

In I2C mode, the ST25DV04K, ST25DV16K and ST25DV64K user memory contains up to 512 bytes, 2048 bytesand 8192 bytes..

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