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ST25DV04KC Datasheet(PDF) 92 Page - STMicroelectronics |
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ST25DV04KC Datasheet(HTML) 92 Page - STMicroelectronics |
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92 / 203 page  7.6.9 Extended Write Single Block On receiving the Extended Write Single command, the ST25DVxxKC writes the data contained in the request to the targeted block and reports whether the write operation was successful in the response. When the Option_flag is set, wait for EOF to respond. The Inventory_flag must be set to 0. During the RF write cycle Wt, there should be no modulation (neither 100% nor 10%), otherwise the ST25DVxxKC may not program correctly the data into the memory. The Wt time is equal to t1nom + N × 302 µs (N is an integer). Block number is coded on 1 Byte and only first 256 blocks of ST25DV16KC and ST25DV64KC can be addressed using this command. Table 119. Extended Write Single request format Request SOF Request_flags Extended Write Single Block UID (1) Block number Data CRC16 Request EOF - 8 bits 31h 64 bits 16 bits 32 bits 16 bits - 1. This field is optional. Request parameters: • Request flags • UID (optional) • Block number (from LSB byte to MSB byte) • Data (from LSB byte to MSB byte) Table 120. Extended Write Single response format when Error_flag is NOT set Response SOF Response_flags CRC16 Response EOF - 8 bits 16 bits - Response parameter: • No parameter. The response is sent back after the writing cycle. Table 121. Extended Write Single response format when Error_flag is set Response SOF Response_flags Error code CRC16 Response EOF - 8 bits 8 bits 16 bits - Response parameter: • Error code as Error_flag is set: – 03h: command option not supported – 0Fh: error with no information given – 10h: the specified block is not available – 12h: the specified block is locked and its contents cannot be changed – 13h: the specified block was not successfully programmed ST25DV04KC ST25DV16KC ST25DV64KC RF commands DS13519 - Rev 3 page 92/203 |
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