Atmel ARM-Based Evaluation Kit for SAM4S16C, 32-Bit ARM® Cortex® Microcontroller ATSAM4S-WPIR-RD ATSAM4S-WPIR-RD Data Sheet
![Atmel](https://files.manualsbrain.com/attachments/0369829915bda09f9c2e00fb805a7753579683b5/common/fit/150/50/8d2bf08978ec3e5bc63f4343ac5e91ce8d0e40045619fa520d910d64af8f/brand_logo.png)
Product codes
ATSAM4S-WPIR-RD
SAM4S Series [DATASHEET]
Atmel-11100G-ATARM-SAM4S-Datasheet_27-May-14
546
29.17.21PMC Write Protection Mode Register
Name:
PMC_WPMR
Address:
0x400E04E4
Access:
Read/Write
Reset:
• WPEN: Write Protection Enable
0: Disables the write protection if WPKEY corresponds to 0x504D43 (“PMC” in ASCII).
1: Enables the write protection if WPKEY corresponds to 0x504D43 (“PMC” in ASCII).
See
1: Enables the write protection if WPKEY corresponds to 0x504D43 (“PMC” in ASCII).
See
for the list of registers that can be write-protected.
• 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
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
.