Datasheet

621
SAM4E [DATASHEET]
Atmel-11157D-ATARM-SAM4E16-SAM4E8-Datasheet_12-Jun-14
30.17.20 PMC Write Protection Mode Register
Name: PMC_WPMR
Address: 0x400E04E4
Access: Read/Write
 WPEN: Write Protection Enable
0: Disables the write protection if WPKEY corresponds to 0x504D43 (“PMC” in ASCII).
1: Enables the write protection if WPKEY corresponds to 0x504D43 (“PMC” in ASCII).
See Section 30.16 ”Register Write Protection” for the list of registers that can be write-protected.
 WPKEY: Write Protection Key
31 30 29 28 27 26 25 24
WPKEY
23 22 21 20 19 18 17 16
WPKEY
15 14 13 12 11 10 9 8
WPKEY
76543210
–––––––WPEN
Value Name Description
0x504D43 PASSWD
Writing any other value in this field aborts the write operation of the WPEN
bit. Always reads as 0
.