45.7.46 USART Write Protection Mode Register
Name: | US_WPMR |
Offset: | 0x00E4 |
Reset: | 0x0 |
Property: | Read/Write |
Bit | 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | |
WPKEY[23:16] | |||||||||
Access | R/W | R/W | R/W | R/W | R/W | R/W | R/W | R/W | |
Reset | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Bit | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | |
WPKEY[15:8] | |||||||||
Access | R/W | R/W | R/W | R/W | R/W | R/W | R/W | R/W | |
Reset | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Bit | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | |
WPKEY[7:0] | |||||||||
Access | R/W | R/W | R/W | R/W | R/W | R/W | R/W | R/W | |
Reset | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
WPEN | |||||||||
Access | R/W | ||||||||
Reset | 0 |
Bits 31:8 – WPKEY[23:0] Write Protection Key
Value | Name | Description |
---|---|---|
0x555341 | PASSWD | Writing any other value in this field aborts the write operation of the WPEN bit. Always reads as 0. |
Bit 0 – WPEN Write Protection Enable
See Section 7.12 “Register Write Protection” for the list of registers that can be write-protected.
Value | Description |
---|---|
0 | Disables the write protection if WPKEY corresponds to 0x555341 (“USA” in ASCII). |
1 | Enables the write protection if WPKEY corresponds to 0x555341 (“USA” in ASCII). |