: The YP-05 is versatile, offering both 3.3V and 5V logic levels . This is usually achieved via an onboard jumper or switch that selects between the USB's 5V supply and the FT232RL’s internal 3.3V regulator.
The I/O section interfaces the internal logic with the external environment. Yp-05 Schematic
Receives serial data from the external device. : The YP-05 is versatile, offering both 3