Atmel SAM4S Xplained Pro Starter Kit Atmel ATSAM4S-XSTK ATSAM4S-XSTK Hoja De Datos
Los códigos de productos
ATSAM4S-XSTK
431
SAM4S [DATASHEET]
11100E–ATARM–24-Jul-13
26.15.8 SMC Write Protect Mode Register
Name:
SMC_WPMR
Address:
0x400E00E4
Access:
Read-write
Reset:
See
• WPEN: Write Protect Enable
0 = Disables the Write Protect if WPKEY corresponds to 0x534D43 (“SMC” in ASCII).
1 = Enables the Write Protect if WPKEY corresponds to 0x534D43 (“SMC” in ASCII).
Protects the registers listed below:
•
•
•
•
• WPKEY: Write Protect KEY
Should be written at value 0x534D43 (“SMC” in ASCII). Writing any other value in this field aborts the write operation of the
WPEN bit. Always reads as 0.
WPEN bit. Always reads as 0.
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