RM0367 Rev 7 115/1043
RM0367 Flash program memory and data EEPROM (FLASH)
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Bit 10 SIZERR: Size error
This bit is set by hardware when the size of data to program is not correct. It is cleared by
writing 1.
0: No size error happened.
1: One size error happened.
Bit 9 PGAERR: Programming alignment error
This bit is set by hardware when an alignment error has happened: the first word of a half-page
operation is not aligned to a half-page, or one of the following words in a half-page operation
does not belong to the same half-page as the first word. When this bit is set, it has to be
cleared before writing 1, and no half-page operation is accepted.
0: No alignment error happened.
1: One alignment error happened.
Bit 8 WRPERR: Write protection error
This bit is set by hardware when an address to be programmed or erased is write-protected. It
is cleared by writing 1.
0: No protection error happened.
1: One protection error happened.
Bits 7:4 Reserved, must be kept at reset value
Bit 3 READY
When this bit is set, the NVM is ready for read and write/erase operations.
0: The NVM is not ready. No read or write/erase operation can be done.
1: The NVM is ready.
Bit 2 ENDHV
This bit is set and reset by hardware.
0: High voltage is executing a write/erase operation in the NVM.
1: High voltage is off, no write/erase operation is ongoing.
Bit 1 EOP: End of program
This bit is set by hardware at the end of a write or erase operation when the operation has not
been aborted. It is reset by software (writing 1).
0: No EOP operation occurred
1: An EOP event occurred. An interrupt is generated if EOPIE bit is set.
Bit 0 BSY: Memory interface busy
Write/erase operations are in progress.
0: No write/erase operation is in progress.
1: A write/erase operation is in progress.
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