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LRI512 датащи(PDF) 31 Page - STMicroelectronics |
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LRI512 датащи(HTML) 31 Page - STMicroelectronics |
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31 / 54 page ![]() 31/54 LRI512 WRITE SINGLE BLOCK Command Code = 0x21 When receiving the Write Single Block Command, the LRI512 writes the requested block with the data contained in the Request, and reports the success of the operation in the Response. The Option_Flag is not supported. During the write cycle, tW, no modulation (neither 100% nor 10%) shall occur, otherwise the LRI512 may program the data incorrectly in the memory. The tW delay is a multiple of t1nominal. Request parameter (Table 28): – UID (Optional) – Block Number –Data Response parameter (Table 29): – No parameter. The response is sent back af- ter the write cycle Response parameter (Table 30): – Error Code as Error_Flag is set Table 28. Write Single Block Request Format Table 29. Write Single Block Response Format when Error Flag is NOT Set Table 30. Write Single Block Response Format when Error Flag is Set Figure 35. WRITE Single Block Frame Exchange between VCD and LRI512 Request SOF Request Flags Write Single Block UID Block Number Data CRC16 Request EOF 8 bits 0x21 64 bits 8 bits 32 bits 16bits Response SOF Response_Flags CRC16 Response EOF 8 bits 16 bits Response SOF Response_Flags Error Code CRC16 Response EOF 8 bits 8 bits 16 bits AI06833 VCD LRI512 LRI512 t1 EOF SOF Write Single Block Request EOF SOF Write Single Block Response Write sequence when error SOF Write Single Block Response EOF t1 tw |
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