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ST25DV64K 数据表(PDF) 126 Page - STMicroelectronics |
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ST25DV64K 数据表(HTML) 126 Page - STMicroelectronics |
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126 / 200 page  Table 212. Present Password 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: – 02h: command not recognized – 03h: command option not supported – 0Fh: the present password is incorrect – 10h: the password number is incorrect Figure 65. Present Password frame exchange between VCD and ST25DVxxx SOF Present Password request VCD ST25DVxxx EOF SOF Present Password response EOF t1 7.6.37 Fast Read Single Block On receiving the Fast Read Single Block command, the ST25DVxxx reads the requested block and sends back its 32-bit value in the response. When the Option_flag is set, the response includes the Block Security Status. The data rate of the response is multiplied by 2. The subcarrier_flag should be set to 0, otherwise the ST25DVxxx answers with an error code. The Inventory_flag must be set to 0. Block number is coded on 1 Byte and only first 256 blocks of ST25DV16K-xx and ST25DV64K-xx can be addressed using this command. Table 213. Fast Read Single Block request format Request SOF Request_flags Fast Read Single Block IC Mfg code UID (1) Block number CRC16 Request EOF - 8 bits C0h 02h 64 bits 8 bits 16 bits - 1. This field is optional. Request parameters: • Request flags • UID (optional) • Block number Table 214. Fast Read Single Block response format when Error_flag is NOT set Response SOF Response_flags Block security status (1) Data CRC16 Response EOF - 8 bits 8 bits 32 bits 16 bits - 1. This field is optional. ST25DV04K ST25DV16K ST25DV64K RF commands DS10925 - Rev 9 page 126/200 |
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