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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) 88 Page - STMicroelectronics |
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ST25DV64KC Scheda tecnica(HTML) 88 Page - STMicroelectronics |
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88 / 203 page  • receiving a Select request. It then goes to the Selected state, • receiving a Reset to Ready request. It then goes to the Ready state. Table 107. Stay Quiet request format Request SOF Request flags Stay Quiet UID CRC16 Request EOF - 8 bits 02h 64 bits 16 bits - The Stay Quiet command must always be executed in Addressed mode (Select_flag is reset to 0 and Address_flag is set to 1). Figure 40. Stay Quiet frame exchange between VCD and ST25DVxxKC SOF Stay Quiet request VCD ST25DVxxKC EOF 7.6.6 Read Single Block On receiving the Read Single Block command, the ST25DVxxKC reads the requested block and sends back its 32-bit value in the response. The Option_flag is supported, when set response include the Block Security Status. The Inventory_flag must be set to 0. Block number is coded on 1 Byte and only first 256 blocks of ST25DV16KC and ST25DV64KC can be addressed using this command. Table 108. Read Single Block request format Request SOF Request_flags Read Single Block UID (1) Block number CRC16 Request EOF - 8 bits 20h 64 bits 8 bits 16 bits - 1. This the field is optional. Request parameters: • Request flags • UID (optional) • Block number Table 109. 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. Response parameters: • Block security status if Option_flag is set (see Table 110. Block security status • Four bytes of block data ST25DV04KC ST25DV16KC ST25DV64KC RF commands DS13519 - Rev 3 page 88/203 |
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