- Application: This sample code uses the UART to wake up the M480 from power down mode and perform frequency compensation.
- BSP Version: M480 Series BSP CMSIS V3.04.000
- Hardware: NuMaker-PFM-M487 Ver 3.0
be set to LXT in power down mode, UART baud rate compensation is used to achieve a more accurate frequency. Set the register WKRFRTEN (UART_WKCTL[2]) to enable the UART
wake-up function.
After entering the power down mode, when the data received in the RX FIFO reaches the threshold setting RFITL (UART_FIFO[7:4]), the receive data flag RFRTWKF (UART_WKSTS[2]) is set.
You can download the sample code at https://www.nuvoton.com/resource-downlo ... 0313102638