In the PSoC6 design, uart component is different from PSoC4, there is no "wake up from deep sleep" option. So we don't know how to use the uart to wake up from deep sleep. From the spec of PSoC6 low-power mode, there is only retention the I2C/SPI wake up available. It means that uart can not use for wake up ? Or is there any other solution for wake up form the uart rx pin? Thanks!
Please refer to the following article that explains how to wake up the device from deep sleep using UART RX activity
Hope this helps!