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数据搜索系统，热门电子元器件搜索 |
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M24LR64-R_1004 数据表(PDF) 78 Page - STMicroelectronics |
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M24LR64-R_1004 数据表(HTML) 78 Page - STMicroelectronics |
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78 / 126 page  Commands codes M24LR64-R 78/126 Doc ID 15170 Rev 9 26.4 Write Single Block On receiving the Write Single Block command, the M24LR64-R writes the data contained in the request to the requested block and reports whether the write operation was successful in the response. The Protocol_extention_flag should be set to 1 for the M24LR64-R to operate correctly. If the Protocol_extention_flag is at 0, the M24LR64-R answers with an error code. The Option_flag is supported. During the RF write cycle Wt, there should be no modulation (neither 100% nor 10%). Otherwise, the M24LR64-R may not program correctly the data into the memory. The Wt time is equal to t1nom + 18 × 302 µs. Request parameters: ● UID (optional) ● Block number ● Data Response parameter: ● No parameter. The response is send back after the writing cycle. Response parameter: ● Error code as Error_flag is set: – 03h: the option is not supported – 0Fh: error with no information given – 10h: the specified block is not available – 12h: the specified block is locked and its contents cannot be changed. – 13h: the specified block was not successfully programmed Table 41. Write Single Block request format Request SOF Request_ flags Write Single Block UID(1) 1. Gray means that the field is optional. Block number Data CRC16 Request EOF 8 bits 21h 64 bits 16 bits 32 bits 16 bits Table 42. Write Single Block response format when Error_flag is NOT set Response SOF Response_flags CRC16 Response EOF 8 bits 16 bits Table 43. Write Single Block response format when Error_flag is set Response SOF Response_ flags Error code CRC16 Response EOF 8 bits 8 bits 16 bits |
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