Datasheet

910
SAM9N12/SAM9CN11/SAM9CN12 [DATASHEET]
11063K–ATARM–05-Nov-13
42.8.23 ADC Write Protect Mode Register
Name: ADC_WPMR
Address: 0xF804C0E4
Access: Read-write
• WPEN: Write Protect Enable
0: Disables the Write Protect if WPKEY corresponds to 0x414443 (“ADC” in ASCII).
1: Enables the Write Protect if WPKEY corresponds to 0x414443 (“ADC” in ASCII).
Protects the registers:
 “ADC Mode Register”
 “ADC Channel Sequence 1 Register”
 “ADC Channel Sequence 2 Register”
 “ADC Channel Enable Register”
 “ADC Channel Disable Register”
 “ADC Extended Mode Register”
 “ADC Compare Window Register”
 “ADC Analog Control Register”
 “ADC Touchscreen Mode Register”
 “ADC Trigger Register”
• WPKEY: Write Protect 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
0x414443 PASSWD
Writing any other value in this field aborts the write operation of the WPEN bit.
Always reads as 0