Datasheet

32072H–AVR32–10/2012

AT32UC3A3

7.6.18 BOD33 Control Register

Name: BOD33

Access Type: Read/Write

Offset: 0xD4

Reset Value: 0x0000010X

• 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.

• FCD: BOD33 Fuse calibration done

Set to 1 when LEVEL field has been updated by the Flash fuses after power-on reset or Flash fuses update

If one, the LEVEL value will not be updated again by Flash fuses

Can be cleared to allow subsequent overwriting of the value by Flash fuses

• CTRL: BOD33 Control

0: BOD33 is off

1: BOD33 is enabled and can reset the chip

2: BOD33 is enabled and but cannot reset the chip. Only interrupt will be sent to interrupt controller, if enabled in the IMR

3: BOD33 is off

• LEVEL: BOD33 Level

This field sets the triggering threshold of the BOD33. See Electrical Characteristics for actual voltage levels.

Note that any change to the LEVEL field of the BOD33 register should be done with the BOD33 deactivated to avoid spurious

reset or interrupt.

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

------ CTRL

76543210

-- LEVEL