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ST25DV04KC Datasheet(PDF) 82 Page - STMicroelectronics |
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ST25DV04KC Datasheet(HTML) 82 Page - STMicroelectronics |
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82 / 203 page  7.4.6 Response format The response consists of: • an SOF • flags • parameters and data • a CRC • an EOF Table 100. General response format SOF Response_flags Parameters Data 2 byte CRC EOF 7.4.7 Response flags In a response, the flags indicate how actions have been performed by the ST25DVxxKC and whether corresponding fields are present or not. The response flags consist of eight bits. Table 101. Definitions of response flags 1 to 8 Bit Nb Flag Level Description Bit 1 Error_flag 0 No error 1 Error detected. Error code is in the “Error” field. Bit 2 ResponseBuffer Validity_flag 0 Not supported, always set to 0 Bit 3 Final response_flag 0 Not supported, always set to 0 Bit 4 Extension flag 0 Not supported, always set to 0 Bit 6-5 Block security status length_flag 0 Not supported, always set to 0 Bit 7 Waiting time extension request_flag 0 Not supported, always set to 0 Bit 8 RFU 0 - 7.4.8 Response and error code If the Error_flag is set by the ST25DVxxKC in the response, the Error code field is present and provides information about the error that occurred. Error codes not specified in Table 102 are reserved for future use. ST25DV04KC ST25DV16KC ST25DV64KC RF protocol description DS13519 - Rev 3 page 82/203 |
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