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PM0075 Reading/programming the embedded Flash memory

Doc ID 17863 Rev 1 15/31

Figure 2. Flash memory Page Erase procedure

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:

● Check that no Flash memory operation is ongoing by checking the BSY bit in the

FLASH_SR register

● Set the MER bit in the FLASH_CR register

● Set the STRT bit in the FLASH_CR register

● Wait for the BSY bit to be reset

● Read all the pages and verify

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9E S

0ERFORMUNLOCKSEQUENCY

7RITEINTO&!2ANADDRESS

WITHINTHEPAGETOERASE

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THEPAGE

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ST STM32F103xx series Specifications

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