Datasheet

501
SAM3X / SAM3A [DATASHEET]
Atmel-11057C-ATARM-SAM3X-SAM3A-Datasheet_23-Mar-15
25.18.25 SMC Write Protection Control
Name: SMC_WPCR
Address: 0x400E01E4
Access: Write-only
• 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 0x534D43 (ASCII code for “SMC”). Writing any other value in this field has no effect.
31 30 29 28 27 26 25 24
WP_KEY
23 22 21 20 19 18 17 16
WP_KEY
15 14 13 12 11 10 9 8
WP_KEY
76543210
WP_EN