In my application I am using the DAC synchronous drivers to create a static voltage that is used as a control point in my projects.
The DAC will initially write the desired value but then decay to zero after a very short period.
I have enabled the refresh period in the Atmel START configuration to 0x02 (where 0x01 is reserved), and 0x00 is no refresh however I am unable to see any refreshes occur.
If I set refresh to 2 then I get a single pulse out of the DAC.
If I set the refresh to disabled I see a decay after each pulse.
Any suggestions? Datasheet snippet below.