Atmel Xplained Pro Evaluation Kit ATSAM4E-XPRO ATSAM4E-XPRO Data Sheet
Product codes
ATSAM4E-XPRO
955
SAM4E [DATASHEET]
Atmel-11157D-ATARM-SAM4E16-SAM4E8-Datasheet_12-Jun-14
38.8.22 USART Write Protection Mode Register
Name:
US_WPMR
Address:
0x400A00E4 (0), 0x400A40E4 (1)
Access:
Read/Write
Reset:
WPEN: Write Protection Enable
0: Disables the write protection if WPKEY corresponds to 0x555341 (“USA” in ASCII).
1: Enables the write protection if WPKEY corresponds to 0x555341 (“USA” 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
0x555341
PASSWD
Writing any other value in this field aborts the write operation of the WPEN bit. Always reads
as 0.
as 0.