ST ST25DV04 NFC RFID标签解决方案

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, which could be split in 4 flexible and protectable areas.
In RF mode, following ISO/IEC 15693 or NFC forum type 5 recommendations, ST25DV04K, ST25DV16K andST25DV64K user memory contains respectively up to 128 blocks, 512 blocks and 2048 blocks of 4 bytes whichcould be split in 4 flexible and protectable areas.
ST25DV04K, ST25DV16K and ST25DV64K offer a fast transfer mode between the RF and contact worlds, thanksto a 256 bytes volatile buffer (also called Mailbox). In addition, the GPO pin of the ST25DV04K, ST25DV16K andST25DV64K provide ...