Reading/programming the STM32F101xF/G and STM32F103xF/G embedded Flash memory

12/31

Doc ID 17100 Rev 2

2.3.4

Flash memory erase

The Flash memory can be erased page by page or completely (Mass Erase).

Page Erase

A page of the Flash memory can be erased using the Page Erase feature of the FPEC. To

erase a page, the procedure below should be followed:

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

FLASH_CR register

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Set the PER bit in the FLASH_CR register

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Program the FLASH_AR register to select a page to erase

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Set the STRT bit in the FLASH_CR register

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Wait for the BSY bit to be reset

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Read the erased page and verify

Figure 2.

Flash memory Page Erase procedure