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M24LR64E-R 数据表(PDF) 115 Page - STMicroelectronics |
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M24LR64E-R 数据表(HTML) 115 Page - STMicroelectronics |
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115 / 140 page  M24LR64E-R Command codes Doc ID 022712 Rev 3 115/140 Response parameter: ● Error code as Error_flag is set: – 13h: the specified block was not successfully programmed When configured in the RF busy mode, the RF WIP/BUSY pin is tied to 0 from the SOF that starts the WriteEHCfg command to the end of the M24LR64E-R response. When configured in the RF write in progress mode, the RF WIP/BUSY pin is tied to 0 for the entire duration of the internal write cycle (from the end of a valid WriteEHCfg command to the beginning of the M24LR64E-R response). 26.25 WriteDOCfg On receiving the WriteDOCfg command, the M24LR64E-R writes the data contained in the request to the Configuration byte and reports whether the write operation was successful in the response. The Protocol_extension_flag should be set to 0 for the M24LR64E-R to operate correctly. If the Protocol_extension_flag is at 1, the M24LR64E-R answers with an error code. The Option_flag is supported, the Inventory_flag is not supported. During the RF write cycle Wt, there should be no modulation (neither 100% nor 10%), otherwise the M24LR64E-R may not program correctly the data into the Configuration byte. The Wt time is equal to t1nom + 18 × 302 µs. Table 108. WriteEHCfg response format when Error_flag is set Response SOF Response_ flags Error code CRC16 Response EOF 8 bits 8 bits 16 bits Figure 75. WriteEHCfg frame exchange between VCD and M24LR64E-R VCD SOF WriteEHCfg request EOF M24LR64E-R <-t1-> SOF WriteEHCfg response EOF WriteEHCfg sequence when error M24LR64E-R <------------------- Wt ---------------> SOF WriteEHCfg response EOF Table 109. WriteDOCfg request format Request SOF Request_ flags WriteDOCfg IC Mfg code UID(1) 1. Gray color means that the field is optional. Data CRC16 Request EOF 8 bits A4h 02h 64 bits 8 bits 16 bits |
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