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ST25DV64KC Scheda tecnica(PDF) 137 Page - STMicroelectronics |
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ST25DV64KC Scheda tecnica(HTML) 137 Page - STMicroelectronics |
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137 / 203 page ![]() Response parameter: • Error code as Error_flag is set: – 02h: command option not recognized – 03h: command not supported – 0Fh: error with no information given Figure 77. Fast Read Message Length frame exchange between VCD and ST25DVxxKC SOF Fast Read Message Length request VCD ST25DVxxKC EOF SOF Fast Read Message Length response EOF t1 7.6.43 Fast Read Dynamic configuration On receiving the Fast Read Dynamic configuration command, the ST25DVxxKC reads the Dynamic register address by the pointer and sends back its 8-bit value in the response. The Option_flag is not supported. The Inventory_flag must be set to 0. The subcarrier_flag should be set to 0, otherwise the ST25DVxxKC answers with an error code. The data rate of the response is multiplied by 2 compared to Read Dynamic configuration command. Table 238. Fast Read Dynamic configuration request format Request SOF Request_flags Fast Read Dynamic configuration IC Mfg code UID (1) Pointer address CRC16 Request EOF - 8 bits CDh 02h 64 bits 8 bits 16 bits - 1. This field is optional. Request parameters: • Request flag • UID (optional) Table 239. Fast Read Dynamic configuration response format when Error_flag is NOT set Response SOF Response_flags Data CRC16 Response EOF - 8 bits 8 bits 16 bits - Response parameters: • One byte of data Table 240. Fast Read Dynamic configuration response format when Error_flag is set Response SOF Response_flags Error code CRC16 Response EOF - 8 bits 8 bits 16 bits - ST25DV04KC ST25DV16KC ST25DV64KC RF commands DS13519 - Rev 3 page 137/203 |
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