Datasheet

 2017 Microchip Technology Inc. DS60001516A-page 115
SAM9G20
17.6.1 Shutdown Control Register
Name:SHDW_CR
Access:Write-only
SHDW: Shutdown Command
0: No effect.
1: If KEY is correct, asserts the SHDN pin.
KEY: Password
Should be written at value 0xA5. Writing any other value in this field aborts the write operation.
31 30 29 28 27 26 25 24
KEY
23 22 21 20 19 18 17 16
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15 14 13 12 11 10 9 8
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76543210
–––––––SHDW