Datasheet

111
32117D–AVR-01/12
AT32UC3C
8.6.14 Voltage Regulator Calibration Register
Name: VREGCR
Access Type: Read/Write
Offset: 0x003C
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: Flash Calibration Done
Set to 1 when the CALIB field has been updated by the Flash fuses after a reset.
0: The flash calibration will be redone after any reset.
1: The flash calibration will only be redone after a power-on reset.
• CALIB: Calibration value
Calibration value for voltage reference of the 1.8V voltage regulator.
Note that this register is protected by a lock. To write to this register the UNLOCK register has to be written first. Please
refer to the UNLOCK register description for details.
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
--------
76543210
----- CALIB