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grok-x/NFC

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SI522A

  • QFN-32-EP(5x5)
  • 13.56MHz 频段
  • 支持 ISO/IEC 14443 A/MIFARE
  • 超低功耗自动载波侦测功能（ACD）
    • 自动检测 13.56MHz 外部射频场和射频卡
    • ACD 过程不需要 MCU 干预
    • OSC 起振失败监测功能典型操作距离为 50mm
  • 支持的主机接口：
    • SPI 接口，速率高达 10Mbits/s
    • I2C 接口，快速模式速率达400kBd，高速模式速率达 3400kBd
    • 串行 UART，速率达 1228.8kBd

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