2021-02-03 03:27 AM
I have an 1.8V STM32 and an 3.5V MAX31865 which are connected via SPI, I used 10k Ohms pullups on data line to 3.5V. Now the problem is that communication dosen't work. When I increas STM32 voltage to 3.5 V everything is fine. Is there an limitation in logic high on STM32 side?
2021-02-03 05:15 AM
On register level it is possible. Wheter Cube exposes this interface, I do not know.
2021-02-05 03:17 PM
Yes, that was the reason. If i set down voltage from 3.5 to 3.0 its working