Atmel SAM4L Xplained Pro Evaluation Kit Atmel ATSAM4L-XPRO ATSAM4L-XPRO Data Sheet
Product codes
ATSAM4L-XPRO
840
42023E–SAM–07/2013
ATSAM4L8/L4/L2
30.9.15
Write Protect Mode Register
Name:
WPMR
Access Type:
Read/write
Offset:
0xE4
Reset Value:
0x00000000
• WPKEY: Write Protect Key
Valid key is “TIM” in ASCII (0x54494D in hexadecimal).
• WPEN: Write Protect Enable
1: Writing a one to this bit will enable write protection (WPKEY must be set).
0: Writing a zero to this bit will disable write protection (WPKEY must be set).
Protected registers:
Channel Mode Register: Capture Mode
Channel Mode Register: Waveform Mode
Stepper Motor Mode Register
Register A
Register B
Register C
Block Mode Register
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
7
6
5
4
3
2
1
0
-
-
-
-
-
-
-
WPEN