Atmel SAM4S-XPLD Atmel ATSAM4S-XPLD ATSAM4S-XPLD Hoja De Datos
Los códigos de productos
ATSAM4S-XPLD
495
SAM4S [DATASHEET]
11100E–ATARM–24-Jul-13
28.2.16.21PMC Write Protect Mode Register
Name:
PMC_WPMR
Address:
0x400E04E4
Access:
Read-write
Reset:
See
• WPEN: Write Protect Enable
0 = Disables the Write Protect if WPKEY corresponds to 0x504D43 (“PMC” in ASCII).
1 = Enables the Write Protect if WPKEY corresponds to 0x504D43 (“PMC” in ASCII).
Protects the 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
7
6
5
4
3
2
1
0
–
–
–
–
–
–
–
WPEN
Value
Name
Description
0x504D43
PASSWD
Writing any other value in this field aborts the write operation of the WPEN
bit. Always reads as 0
bit. Always reads as 0
.