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DigitalDisco: Permanently set output voltage to 1.8V


HoWei

Question

I am able to programm the voltage to 1.8V, but whenever the instrument is reset the voltage is back at 3.3V.

I need to set it permanently to 1.8V to not destroy/degrade my DUT, which has 1.8V digital inputs only.

Is it possible to set the default output voltage to 1.8V permanently?

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Hi @HoWei

The default 3.3V can't be changed, but by default the VIO output is disabled and the DIOs are in high impedance, so no voltage is output.

In your application after opening the device first adjust the digital voltage. This before enabling the VIO output or setting DIO outputs.

See the WF SDK/ samples/ py/ AnalogIO_DigitalDiscovery.py

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