Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Nuvoton/M05x_registers/INT/IRQ12_SRC#0x0
MCU IRQ12 (URT0) interrupt source identify
Bit2 = 0 Bit1 = 0 Bit0: URT0_INT
https://github.com/cmsis-svd/cmsis-svd-data