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Motore di ricerca datesheet componenti elettronici |
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Motore di ricerca datesheet componenti elettronici |
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ST25DV64K Scheda tecnica(PDF) 157 Page - STMicroelectronics |
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ST25DV64K Scheda tecnica(HTML) 157 Page - STMicroelectronics |
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157 / 220 page  DocID027603 Rev 4 157/220 ST25DV04K ST25DV16K ST25DV64K RF operations 219 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 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 173. Present Password response format when Error_flag is set Response SOF Response_flags Error code CRC16 Response EOF - 8 bits 8 bits 16 bits - Figure 65. Present Password frame exchange between VCD and ST25DVxxx VCD SOF Present password request EOF ST25DVxxx <-t1-> SOF Present password response EOF Table 174. Fast Read Single Block request format Request SOF Request_flags Fast Read Single Block IC Mfg code UID(1) 1. Gray color means that the field is optional. Block number CRC16 Request EOF -8 bits C0h 02h 64 bits 8 bits 16 bits - |
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