Datasheet

22.5.5 EEFC Write Protection Mode Register
Name: EEFC_WPMR
Offset: 0xE4
Property: Read/Write
Bit 31 30 29 28 27 26 25 24
WPKEY[23:16]
Access
Reset
Bit 23 22 21 20 19 18 17 16
WPKEY[15:8]
Access
Reset
Bit 15 14 13 12 11 10 9 8
WPKEY[7:0]
Access
Reset
Bit 7 6 5 4 3 2 1 0
WPEN
Access
Reset
Bits 31:8 – WPKEY[23:0] W
rite Protection Key
See “Register Write Protection” for the list of registers that can be protected.
Value Name Description
0x454643
PASSWD Writing any other value in this field aborts the write operation.
Always reads as 0.
Bit 0 – WPEN W
rite Protection Enable
See “Register Write Protection” for the list of registers that can be protected.
Value Description
0
Disables the write protection if WPKEY corresponds to 0x454643 (EFC in ASCII).
1
Enables the write protection if WPKEY corresponds to 0x454643 (EFC in ASCII).
SAM E70/S70/V70/V71 Family
Enhanced Embedded Flash Controller (EEFC)
© 2019 Microchip T
echnology Inc.
Datasheet
DS60001527D-page 151