Datasheet

SAM3X / SAM3A [DATASHEET]
Atmel-11057C-ATARM-SAM3X-SAM3A-Datasheet_23-Mar-15
908
36.7.20 TC Write Protection Mode Register
Name: TC_WPMR
Address: 0x400800E4 (0), 0x400840E4 (1), 0x400880E4 (2)
Access: Read/Write
• WPEN: Write Protection Enable
0: Disables the write protection if WPKEY corresponds to 0x54494D (“TIM” in ASCII).
1: Enables the write protection if WPKEY corresponds to 0x54494D (“TIM” in ASCII).
The Timer Counter clock of the first channel must be enabled to access this register.
See Section 36.6.17 ”Register Write Protection”, for a list of registers that can be write-protected and Timer Counter clock
conditions.
• WPKEY: Write Protection 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
0x54494D PASSWD
Writing any other value in this field aborts the write operation of the WPEN bit.
Always reads as 0.