Datasheet

867
SAM4S Series [DATASHEET]
11100F–ATARM–29-Jan-14
37.7.20 TC Write Protection 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).
See Section 37.6.16 “Register Write Protection” for list of write-protected registers.
• 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
0x54494D PASSWD
Writing any other value in this field aborts the write operation of the WPEN bit.
Always reads as 0.