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RM0366
3.5.8
Write protection register (FLASH_WRPR)
Address offset: 0x20
Reset value: 0xFFFF FFFF
31
30
29
r
r
r
15
14
13
r
r
r
3.6
Flash register map
Offset
Register
FLASH_
ACR
0x000
Reset
value
FLASH_
KEYR
0x004
Reset
x
x
value
FLASH_
OPTKEYR
0x008
Reset
x
x
Value
FLASH_
SR
0x00C
Reset
value
FLASH_
CR
0x010
Reset
value
FLASH_
AR
0x014
Reset
0
0
value
28
27
26
25
r
r
r
r
12
11
10
9
r
r
r
r
Bits 31:0 WRP: Write protect
This register contains the write-protection option bytes loaded by the OBL.
These bits are read-only.
Table 7. Flash interface - register map and reset values
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
0
0
0
0
0
0
0
0
24
23
22
WRP[31:16]
r
r
r
8
7
6
WRP[15:0]
r
r
r
FKEYR[31:0]
x
x
x
x
x
x
x
x
OPTKEYR[31:0]
x
x
x
x
x
x
x
x
FAR[31:0]
0
0
0
0
0
0
0
0
RM0366 Rev 5
Embedded flash memory
21
20
19
18
r
r
r
r
5
4
3
2
r
r
r
r
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
0
0
0
0
1
0
0
0
0
0
0
0
0
0
17
16
r
r
1
0
r
r
LATENCY
[2:0]
1
1
0
0
0
0
x
x
x
x
x
x
x
x
x
x
x
x
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
63/874
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