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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AN3262 датащи(PDF) 21 Page - STMicroelectronics |
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AN3262 датащи(HTML) 21 Page - STMicroelectronics |
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21 / 27 page  AN3262 Bootloader command set Doc ID 17845 Rev 2 21/27 Figure 23. WRITE MEMORY command (device side) 1. WM = WRITE MEMORY command. 2. N+1 should always be a multiple of 4. Ai14642d ROP inactive? Receive the start address (4 bytes) & checksum Flash memory address? No Yes Start WM(1) Receive the number of bytes to be written (1 byte), the data (N + 1 bytes)(2) and checksum Checksum OK? No Yes Received byte = 0x31+0xCE? Send ACK byte Send ACK byte Write the received data to Flash memory from the start address Send ACK byte End of WM(1) No Yes No Yes Checksum OK? No Yes RAM address? Write the received data to RAM from the start address Yes Yes Option byte address? Write the received data to Option byte area from start address Yes Yes Write the Keys for Option byte area access Send NACK byte Send ACK byte |
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