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AN3408 датащи(PDF) 33 Page - STMicroelectronics |
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AN3408 датащи(HTML) 33 Page - STMicroelectronics |
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33 / 38 page ![]() DocID018867 Rev 4 33/38 AN3408 User application flow charts Figure 4. Identifying a blank card ISO/IEC 15693 contactless tag 1. GetSystemInformation is a command defined in IEC/ISO 15693 specification or STM products datasheet. Information on the contactless tag response of GetSystemInformation command is given in Table 47. Start Send GetSystemInformation command (1) ICreference = ISO15693 STM product ? No : The contactless tag is not a STM product Yes AI18891 End Get memory size information Table 47. Contactless tag response of GetSystemInformation command LRI1K LRI2K LRIS2K LRIS64K M24LR04 E-R M24LR16 E-R M24LR64 E-R M24LR6 4-R IC reference (1 byte) 0b010000 xx 0b001000 xx 0b001010 xx 010001xx b 0x5A 0x4E 0x5E 0x2C Block size (bytes) (1) 0x 03 0x 03 0x 03 0x 03 0x03 0x03 0x03 0x 03 Memory size (bytes) (2) 0x 1F 0x 3F 0x 3F 0x 07FF 0x7F 0x011F 0x071F 0x 07FF 1. Block size = 0x03 means that the number of bytes of the block is 4 bytes. 2. The number of blocks of a contactless tag is Memory size value +1. |
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