SAM4C_14 Datasheet, PDF (684/1303 Pages) ATMEL Corporation – Atmel | SMART ARM-based Flash MCU

32.6.45 PIO Write Protection Mode Register
Name:
PIO_WPMR
Address: 0x400E0EE4 (PIOA), 0x400E10E4 (PIOB), 0x4800C0E4 (PIOC), 0x400E12E4 (PIOD)
Access: Read/Write
31
30
29
28
27
26
25
WPKEY
23
22
21
20
19
18
17
WPKEY
15
14
13
12
11
10
9
WPKEY
7
6
5
4
3
2
1
–
–
–
–
–
–
–
• 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 Section 32.5.14 “Register Write Protection” for the list of registers that can be protected.
24
16
8
0
WPEN
• WPKEY: Write Protection Key
Value
0x50494F
Name
PASSWD
Description
Writing any other value in this field aborts the write operation of the WPEN bit. Always reads as
0.
684
SAM4C Series [DATASHEET]
Atmel-11102E-ATARM-SAM4C32-SAM4C16-SAM4C8-Datasheet_06-Oct-14