I'm interfacing a thermocuple-to-digital converter operating at 3.3V to a MCU-S32K148 operating at 5V.
This converter is communicating via SPI. My concern is whether communication at 3.3V level will be successfully accomplished or I need to add signal conditioning network in between?
Hi,
S32K148 dev-kit works on 3.3V and on 5V.
If you must keep S32k148 power supply to 5V and external device to 3.3V I recommend you to use level shifters because threshold for HIGH is 3.25V if you power the S32K148 to 5V.
Best regards,
Razvan