Datasheet

74
32072H–AVR32–10/2012
AT32UC3A3
7.6.16 PM Voltage Regulator Calibration Register
Name: VREGCR
Access Type: Read/Write
Offset: 0xC8
Reset Value: 0x00000000
• KEY: Register Write protection
This field must be written twice, first with key value 0x55, then 0xAA, for a write operation to have an effect.
Calibration value for Voltage Regulator. See Electrical Characteristics for voltage values.
• FCD: Flash Calibration Done
Set to 1 when the CALIB field has been updated by the Flash fuses after power-on reset or when the Flash fuses are
reprogrammed. The CALIB field will not be updated again by the Flash fuses until a new power-on reset or the FCD field is
written to zero.
• CALIB: Calibration value
31 30 29 28 27 26 25 24
KEY
23 22 21 20 19 18 17 16
-------FCD
15 14 13 12 11 10 9 8
--------
76543210
----- CALIB