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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PM0073 датащи(PDF) 17 Page - STMicroelectronics |
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PM0073 датащи(HTML) 17 Page - STMicroelectronics |
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17 / 34 page  PM0073 Reading/programming the STM32Wxxx embedded Flash memory Doc ID 17766 Rev 5 17/34 Mass Erase The Mass Erase command can be used to completely erase the user pages of the Flash memory. The information block is unaffected by this procedure. The following sequence is recommended: 1. Enable the FPEC clock. 2. Check that no Flash memory operation is ongoing by checking the BSY bit in the FLASH_SR register. 3. Set the MER bit in the FLASH_CR register. 4. Set the STRT bit in the FLASH_CR register. 5. Wait for the BSY bit to be reset. 6. Read all the pages and verify. Figure 3. Flash memory Mass Erase procedure Read FLASH_CR_LOCK FLASH_CR_LOCK = 1 Yes No Yes No Perform unlock sequency Write into FLASH_CR_MER to 1 Write FLASH_CR_STRT to 1 FLASH_SR_BSY = 1 Check the erase operation by reading all the addresses in the user memory Enable FPEC clock ai14306c |
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