Datasheet

284
32142D–06/2013
ATUC64/128/256L3/4U
14.6.16 BOD Control Register
Name:
BOD
Access Type: Read/Write
Reset Value: -
• SFV: Store Final Value
0: The register is read/write
1: The register is read-only, to protect against further accidental writes.
This bit is cleared after any reset except for a BOD reset, and during flash calibration.
• FCD: Fuse Calibration Done
0: The flash calibration will be redone after any reset.
1: The flash calibration will be redone after any reset except for a BOD reset.
This bit is cleared after any reset, except for a BOD reset.
This bit is set when the CTRL, HYST and LEVEL fields have been updated by the flash fuses after a reset.
• CTRL: BOD Control
• HYST: BOD Hysteresis
0: No hysteresis.
1: Hysteresis on.
• LEVEL: BOD Level
This field sets the triggering threshold of the BOD. See Electrical Characteristics for actual voltage levels.
Note that any change to the LEVEL field of the BOD register should be done with the BOD deactivated to avoid spurious reset
or interrupt.
31 30 29 28 27 26 25 24
SFV-------
23 22 21 20 19 18 17 16
-------FCD
15 14 13 12 11 10 9 8
------ CTRL
76543210
- HYST LEVEL
Table 14-5. Operation Mode for BOD
CTRL Description
0 BOD is disabled.
1
BOD is enabled and can reset the device. An interrupt request will be generated, if enabled in the IMR
register.
2
BOD is enabled but cannot reset the device. An interrupt request will be generated, if enabled in the IMR
register.
3 Reserved.