Datasheet

35.16.1.8 SMC Write Protection Mode Register
Name: SMC_WPMR
Offset: 0xE4
Reset: 0x00000000
Property: Read/Write
Bit 31 30 29 28 27 26 25 24
WPKEY[23:16]
Access
Reset 0 0 0 0 0 0 0 0
Bit 23 22 21 20 19 18 17 16
WPKEY[15:8]
Access
Reset 0 0 0 0 0 0 0 0
Bit 15 14 13 12 11 10 9 8
WPKEY[7:0]
Access
Reset 0 0 0 0 0 0 0 0
Bit 7 6 5 4 3 2 1 0
WPEN
Access
Reset 0
Bits 31:8 – WPKEY[23:0] W
rite Protection Key
Value Name Description
0x534D43
PASSWD Writing any other value in this field aborts the write operation of the WPEN bit. Always reads
as 0.
Bit 0 – WPEN W
rite Protect Enable
See ”Register Write Protection” for the list of registers that can be write-protected.
Value Description
0
Disables the write protection if WPKEY corresponds to 0x534D43 (“SMC” in ASCII).
1
Enables the write protection if WPKEY corresponds to 0x534D43 (“SMC” in ASCII).
SAM E70/S70/V70/V71 Family
Static Memory Controller (SMC)
© 2019 Microchip T
echnology Inc.
Datasheet
DS60001527D-page 453