參考資料: https://www.electronics-lab.com/project/usb-to-serial-converter-using-pl2303sa/ 腳位: 官方電路圖: P.S. VDD_325的電壓是1.8V~3.3V,依據UART傳輸電壓來決定電壓,如:UART是1.8V,則VDD_325接1.8V 精簡電路圖: