Datasheet

156
32133D–11/2011
UC3D
13.6.10 1.8V BOD Control Register
Name: BOD
Access Type: Read/Write
Offset: 0x0028
Reset Value: 0x00000000
• SFV: Store Final Value
0: The register is read/write
1: The register is read-only, to protect against further accidental writes.
• FCD: BOD Fuse Calibration Done
This bit is set to 1 when the CTRL, HYST and LEVEL fields have been updated by the flash fuses after a reset.
0: The flash calibration will be redone after any reset.
1: The flash calibration will not be redone after a BOD 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 13-6. Operation mode for BOD
CTRL Description
0x0 BOD is off
0x1 BOD is enabled and can reset the chip
0x2
BOD is enabled and but cannot reset the chip. Only interrupt will be sent to interrupt controller, if enabled in
the IMR register.
0x3 Reserved