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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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LRI64-A1S/XXX Fiches technique(PDF) 23 Page - STMicroelectronics |
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LRI64-A1S/XXX Fiches technique(HTML) 23 Page - STMicroelectronics |
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23 / 38 page  23/38 LRI64 Write Single Block When receiving the Write Single Block command, the LRI64 writes the requested block with the data contained in the Request and report the success of the operation in the Response. The Option_Flag is not supported and must be set to 0. The Write Single Block can be issued in both addressed and non addressed modes. During the write cycle tW, no modulation shall oc- cur, otherwise the LRI64 may program the data in- correctly in the memory. The Request Frame (Figure 31.) contains: – Request Flags (Table 3. and Table 4.) – Write Single Block Command Code (21h, Table 9.) – Unique ID (Optional) – Block Number –Data – 2-byte CRC (Figure 16.) If there is no error, at the LRI64, an empty Re- sponse Frame (Figure 32.) is sent back after the write cycle, containing no parameters. It just con- tains: – Response Flags (Table 6.) – 2-byte CRC (Figure 16.) Otherwise, if there is an error, the Response Frame (Figure 33.) contains: – Response Flags (01h, Table 6.) – Error Code (0Fh, Table 7.) – 2-byte CRC (Figure 16.) Figure 31. Write Single Block, Request Frame Format Figure 32. Write Single Block, Response Frame Format, when Error_Flag is not Set Figure 33. Write Single Block, Response Frame Format, when Error_Flag is Set Figure 34. Write Single Block Frame Exchange between VCD and LRI64 AI09735 Request SOF Request Flags Command Code UID 2-Byte CRC Request EOF 8 bits 8 bits 21h 64 bits 16 bits Block Number 8 bits Data 8 bits AI09736 Response SOF Response Flags 2-Byte CRC Response EOF 8 bits 16 bits AI09737 Response SOF Response Flags Error Code 2-Byte CRC Response EOF 8 bit 01h 8 bits 0Fh 16 bits AI06833B VCD VICC VICC 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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