Team,
there is a question about PCA9306.
the structure is like below.
when the MCU(5V side) send the data to sensor(3.3V side), there is normal operation.
but when the sensor(3.3V side) send the data to MCU(5V side), the signal have an unnormal shape.
what's the reason ?
- is it because pullup ressitor ?
- is it because noise ?
