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Motore di ricerca datesheet componenti elettronici |
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Motore di ricerca datesheet componenti elettronici |
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ST25DV64KC Scheda tecnica(PDF) 130 Page - STMicroelectronics |
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ST25DV64KC Scheda tecnica(HTML) 130 Page - STMicroelectronics |
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130 / 203 page  • Block security status if Option_flag is set (see Table 218) • Four bytes of block data Table 218. Block security status b7 b6 b5 b4 b3 b2 b1 b0 Reserved for future use All at 0 0: Current Block not locked 1: Current Block locked Table 219. Fast Read Single Block 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: error with no information given – 10h: the specified block is not available – 15h: the specified block is read-protected Figure 72. Fast Read Single Block frame exchange between VCD and ST25DVxxKC SOF Fast Read Single Block request VCD ST25DVxxKC EOF SOF Fast Read Single Block response EOF t1 7.6.38 Fast Extended Read Single Block On receiving the Fast Extended Read Single Block command, the ST25DVxxKC 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 ST25DVxxKC answers with an error code. The Inventory_flag must be set to 0. Block number is coded on 2 Bytes so all memory blocks of ST25DV16KC and ST25DV64KC can be addressed using this command Table 220. Fast Extended Read Single Block request format Request SOF Request_flags Fast Extended Read Single Block IC Mfg code UID (1) Block number CRC16 Request EOF - 8 bits C4h 02h 64 bits 16 bits 16 bits - 1. This field is optional. ST25DV04KC ST25DV16KC ST25DV64KC RF commands DS13519 - Rev 3 page 130/203 |
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