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ST25DV04K 数据表(PDF) 3 Page - STMicroelectronics |
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ST25DV04K 数据表(HTML) 3 Page - STMicroelectronics |
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3 / 197 page  1 Description The ST25DV04K, ST25DV16K and ST25DV64K devices (hereinafter referred collectively to as ST25DVxxx) are NFC RFID tags offering, respectively 4, 16, and 64 Kbit of electrically erasable programmable memory (EEPROM). These devices feature two interfaces: the first one is an I2C serial link that can be operated from a DC power supply, the second one is an RF link activated when the device acts as a contactless memory powered by the received carrier electromagnetic wave. In I2C mode, the user memory contains up to 512, 2048, or 8192 bytes, which can be split in four flexible and protectable areas. In RF mode, following ISO/IEC 15693 or NFC Forum Type 5 recommendations, the user memory contains up to 128, 512, or 2048 blocks of 4 bytes, which can be split in four flexible and protectable areas. The ST25DVxxx devices offer a fast transfer mode between the RF and contact worlds, thanks to a 256 bytes volatile buffer (also called Mailbox). In addition, the GPO pin provides data about incoming events, like RF field detection, RF activity in progress, or mailbox message availability. An energy harvesting feature is also available, when external conditions make it possible. 1.1 ST25DVxxx block diagram Figure 1. ST25DVxxx block diagram LPD1 AC0 AC1 V_EH VDCG1 GPO Vcc SDA SCL Vss 1.8V VOLTAGE REGULATOR RF INTERFACE 28.5pF tuning capacitance Up to 64Kbits User memory 256 Bytes BUFFER ISO/IEC 15693 PROTOCOL AND CONTROL MEMORY CONTROL DIGITAL UNIT CONTROL ENERGY HARVESTING CONTROL FAST TRANSFER CONTROL ANALOG FRONT END ENERGY HARVESTING I2C INTERFACE I2C CONTROL EEPROM System registers Dynamic registers 1. VDCG and LPD are included only in 10-ball and 12-pin packages. ST25DV04K ST25DV16K ST25DV64K Description DS10925 - Rev 11 page 3/197 |
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