Datasheet

246
11011B–ATARM–21-Feb-12
SAM3N
14.6.13 RTC Write Protect Mode Register
Name: RTC_WPMR
Address: 0x400E1544
Access: Read-write
• WPEN: Write Protect Enable
0 = Disables the Write Protect if WPKEY corresponds to 0x525443 (“RTC” in ASCII).
1 = Enables the Write Protect if WPKEY corresponds to 0x525443 (“RTC” in ASCII).
Protects the registers:
“RTC Mode Register”
“RTC Mode Register”
“RTC Time Alarm Register”
“RTC Calendar Alarm Register”
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