SAM3X8E Atmel Corporation, SAM3X8E Datasheet - Page 1252

• Manufacturer Part Number: SAM3X8E
• Manufacturer: Atmel Corporation

40.9.12
Name:
Address:
Access:
• WPEN: Write Protection Enable
0: The Write Protection is Disabled
1: The Write Protection is Enabled
• WPKEY: SPI Write Protection Key Password
If a value is written in WPEN, the value is taken into account only if WPKEY is written with “CAN” (CAN written in ASCII
Code, ie 0x43414E in hexadecimal).
Protects the registers:
Section 40.9.1 “CAN Mode Register” on page 1235
Section 40.9.6 “CAN Baudrate Register” on page 1246
Section 40.9.14 “CAN Message Mode Register” on page 1254
Section 40.9.15 “CAN Message Acceptance Mask Register” on page 1255
Section 40.9.16 “CAN Message ID Register” on page 1256
1252
1252
31
23
15
7
-
SAM3X/A
SAM3X/A
CAN Write Protection Mode Register
CAN_WPMR
0x400B40E4 (0), 0x400B80E4 (1)
30
22
14
Read-write
6
-
29
21
13
5
-
28
20
12
4
-
WPKEY
WPKEY
WPKEY
27
19
11
3
-
26
18
10
2
-
25
17
9
1
-
11057A–ATARM–17-Feb-12
11057A–ATARM–17-Feb-12
WPEN
24
16
8
0