Datasheet

981
SAM9X25 [DATASHEET]
11054E–ATARM–10-Mar-2014
42.7.18 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” on page 964
“ADC Channel Sequence 1 Register” on page 966
“ADC Channel Sequence 2 Register” on page 967
“ADC Channel Enable Register” on page 968
“ADC Channel Disable Register” on page 969
“ADC Extended Mode Register” on page 977
“ADC Compare Window Register” on page 978
“ADC Trigger Register” on page 980
• WPKEY: Write Protect KEY
Should be written at value 0x414443 (“ADC” in ASCII). Writing any other value in this field aborts the write operation of the WPEN
bit. Always reads as 0.
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