DACX

Chose either DACA or DACB. DACA is connected to PORTA. DACB is connected to PORTB.

dac

ENABLED or DISABLED. Chose ENABLED to enable the DAC.

IO0

ENABLED or DISABLED. Chose ENABLED to enable output 0. Each DAC has 2 outputs. When multiple outputs are used, the DAC is using S&H.

IO1

ENABLED or DISABLED. Chose ENABLED to enable output 1.

Intotp

ENABLED or DISABLED. Chose ENABLED to enable the internal output.

Channel

SINGLE or DUAL. If both outputs are used, you need to enable the second output with IO1.

Trig0

ENABLED or DISABLED. Chose ENABLED to enable the trigger of channel 0.

Trig1

ENABLED or DISABLED. Chose ENABLED to enable the trigger of channel 1.

Ref

The DAC needs a stable voltage reference. You can chose one of the following:

- INT1V. This will select the internal 1V reference

- AVCC. This will use AVCC as reference.

- AREFA. This will use AREFA as reference.

- AREFB. This will use AREFB as reference.

The output of the DAC can never be higher then the voltage reference. When you chose INT1V, the output is from 0-1V in 4096 steps.

Adjusted

ENABLED or DISABLED. By default the DAC output is right adjusted. You can left alight the result.

Event

The event channel to use for the event system.

Interval

The minimum interval between 2 conversions.

This is a value of : 1,2,4,8,16,32,64 or 128. The default in the register is 64. A value of 64 will give an interval of 64 clock cycles.

Refresh

The DAC channel refresh timing. This is the interval refresh time in DUAL channel mode.

Possible values:

OFF

16, 32, 128, 256, 512, 1014, 2048, 4096, 8192, 16384, 32768, 65536.

A value of 16 means an interval of 16 clock cycles. The default loaded is 64.