Other Parts Discussed in Thread: PCA9515A
Champs,
in a customer's system there are two 3.3V rails: 3v3 and 3v3_aux. The 3v3_aux powers the MCU and is always on while the 3v3 goes down during system's sleep. The MCU remains active at all times. The USCI pins in I2C slave mode are connected to PCA9515A buffers which are powered from 3v3 meaning that in sleep mode the buffers are off and the USCI pins are left floating. There is no i2c communications during sleep mode. Will this be a problem for the MCU when the system comes out of sleep?
thanks
Michael