Register descriptions

PM0075

28/31

Doc ID 17863 Rev 2

3.8

Write protection register (FLASH_WRPR)

Address offset: 0x20

Reset value: 0xFFFF FFFF

Bit 1 RDPRT: Read protection

When set, this indicates that the Flash memory is read-protected.

Note: This bit is read-only.

Bit 0 OPTERR: Option byte error

When set, this indicates that the loaded option byte and its complement do not match. The

corresponding byte and its complement are read as 0xFF in the FLASH_OBR or

FLASH_WRPR register.

Note: This bit is read-only.

31

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

WRP[31:16]

rr

rr

rr

r

r

rr

rr

rr

r

r

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

0

WRP[15:0]

rr

rr

rr

r

r

rr

rr

rr

r

r

Bits 31:0 WRP: Write protect

This register contains the write-protection option bytes loaded by the OBL.

0: Write protection active

1: Write protection not active

Note: These bits are read-only.