Datasheet

808
SAM4S [DATASHEET]
11100E–ATARM–24-Jul-13
36.7.20 TC Write Protect Mode Register
Name: TC_WPMR
Address: 0x400100E4 (0), 0x400140E4 (1)
Access: Read-write
• WPEN: Write Protect Enable
0 = Disables the Write Protect if WPKEY corresponds to 0x54494D (“TIM” in ASCII).
1 = Enables the Write Protect if WPKEY corresponds to 0x54494D (“TIM” in ASCII).
Protects the registers:
”TC Block Mode Register”
”TC Channel Mode Register: Capture Mode”
”TC Channel Mode Register: Waveform Mode”
”TC Fault Mode Register”
”TC Stepper Motor Mode Register”
”TC Register A”
”TC Register B”
”TC Register C”
• WPKEY: Write Protect KEY
Should be written at value 0x54494D (“TIM” 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