Datasheet
722
SAM9M10 [DATASHEET]
6355F–ATARM–12-Mar-13
35.13.18 HSMCI Write Protect Mode Register
Name: HSMCI_WPMR
Addresses: 0xFFF800E4 (0), 0xFFFD00E4 (1)
Access: Read-write
• WP_EN: Write Protection Enable
0 = Disables the Write Protection if WP_KEY corresponds.
1 = Enables the Write Protection if WP_KEY corresponds.
• WP_KEY: Write Protection Key password
Should be written at value 0x4D4349 (ASCII code for “HSMCI”). Writing any other value in this field has no effect.
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”)
76543210
WP_EN