Atmel SAM4S Xplained Pro Starter Kit Atmel ATSAM4S-XSTK ATSAM4S-XSTK Data Sheet
Product codes
ATSAM4S-XSTK
851
SAM4S [DATASHEET]
11100E–ATARM–24-Jul-13
37.14.17HSMCI Write Protect Mode Register
Name: HSMCI_WPMR
Address:
0x400000E4
Access: Read-write
• WP_EN: Write Protection Enable
0 = Disables the Write Protection if WP_KEY corresponds to 0x4D4349 (“MCI’ in ASCII).
1 = Enables the Write Protection if WP_KEY corresponds to 0x4D4349 (“MCI’ in ASCII).
• WP_KEY: Write Protection Key password
Should be written at value 0x4D4349 (ASCII code for “MCI”). Writing any other value in this field has no effect.
Protects the registers:
•
•
•
•
•
31
30
29
28
27
26
25
24
WP_KEY (0x4D => “M”)
23
22
21
20
19
18
17
16
WP_KEY (0x43 => C”)
15
14
13
12
11
10
9
8
WP_KEY (0x49 => “I”)
7
6
5
4
3
2
1
0
WP_EN