Data Sheet

201
Atmel | SMART SAM D21 [DATASHEET]
Atmel-42181G–SAM-D21_Datasheet–09/2015
z Bits 4:3 – ACTION[1:0]: BOD33 Action
These bits are used to select the BOD33 action when the supply voltage crosses below the BOD33 threshold.
These bits are loaded from Flash User Row at startup. Refer to “NVM User Row Mapping” on page 30 for more
details.
Table 16-14. BOD33 Action
z Bit 2 – HYST: Hysteresis
This bit indicates whether hysteresis is enabled for the BOD33 threshold voltage:
0: No hysteresis.
1: Hysteresis enabled.
This bit is loaded from Flash User Row at startup. Refer to “NVM User Row Mapping” on page 30 for more details.
z Bit 1 – ENABLE: Enable
0: BOD33 is disabled.
1: BOD33 is enabled.
This bit is loaded from Flash User Row at startup. Refer to “NVM User Row Mapping” on page 30 for more details.
z Bit 0 – Reserved
This bit is unused and reserved for future use. For compatibility with future devices, always write this bit to zero
when this register is written. This bit will always return zero when read.
ACTION[1:0] Name Description
0x0 NONE No action
0x1 RESET The BOD33 generates a reset
0x2 INTERRUPT The BOD33 generates an interrupt
0x3 Reserved