Atmel Xplained Pro Evaluation Kit ATSAM4E-XPRO ATSAM4E-XPRO Data Sheet
Product codes
ATSAM4E-XPRO
SAM4E [DATASHEET]
Atmel-11157D-ATARM-SAM4E16-SAM4E8-Datasheet_12-Jun-14
778
34.6.46 PIO Write Protection Mode Register
Name:
PIO_WPMR
Address:
0x400E0EE4 (PIOA), 0x400E10E4 (PIOB), 0x400E12E4 (PIOC), 0x400E14E4 (PIOD), 0x400E16E4 (PIOE)
Access:
Read/Write
WPEN: Write Protection Enable
0: Disables the write protection if WPKEY corresponds to 0x50494F (“PIO” in ASCII).
1: Enables the write protection if WPKEY corresponds to 0x50494F (“PIO” in ASCII).
See
for the list of registers that can be 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
0x50494F
PASSWD
Writing any other value in this field aborts the write operation of the WPEN bit. Always reads
as 0.
as 0.