I am using a PIC32CZ8110CA90208-I8MX-SL3 in my design. I am providing a supply of 1.8 V to VDDIO.

The oscillator used is a DSC6011JI2B-012.0000.

Can I supply 3.3 V to oscillator VDD and 1.8 V to microcontroller VDDIO?

Will this cause any issues?

Is it necessary that oscillator supply should be equal to IO supply?

 

I am using a PIC32CZ8110CA90208-I8MX-SL3 in my design. I am providing a supply of 1.8 V to VDDIO.

The oscillator used is a DSC6011JI2B-012.0000.

Can I supply 3.3 V to oscillator VDD and 1.8 V to microcontroller VDDIO?

Will this cause any issues?

Is it necessary that oscillator supply should be equal to IO supply?

Yes.

 

hi hoy,
Why don't you use 1.8V for the Osc module.?
E

 

I can use 1.8V that is available in my board.This doubt came to my mind what will happen if the I/O voltage is different from oscillator voltage

 

hi hoy,
I could not see anywhere on the PIC datasheet that the Inputs are 3.3v tolerant?
E

 

 

hi h,

If the stated PIC Input limits are confirmed as you posted, why are you querying the use of 3.3v on the osc module?
Have you tried the Osc to PIC connection at these voltages?
E