SAMA5D41_14 Datasheet, PDF (1177/1776 Pages) ATMEL Corporation – Atmel | SMART ARM-based Embedded MPU

39.8.10 SPI Write Protection Mode Register
Name:
SPI_WPMR
Address: 0xF80100E4 (0), 0xFC0180E4 (1), 0xFC01C0E4 (2)
Access:
Read/Write.
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
• WPEN: Write Protection Enable
0: Disables the write protection if WPKEY corresponds to 0x535049 (“SPI” in ASCII)
1: Enables the write protection if WPKEY corresponds to 0x535049 (“SPI” in ASCII)
See Section 39.7.5 “Register Write Protection” for the list of registers that can be write-protected.
• WPKEY: Write Protection Key
Value
Name
0x535049
PASSWD
Description
Writing any other value in this field aborts the write operation of the WPEN bit.
Always reads as 0.
SAMA5D4 Series [DATASHEET]
Atmel-11238A-ATARM-SAMA5D4-Datasheet_30-Sep-14
1177