The FTDI Chip UMFT234XF is a development module that converts USB2.0 Full-Speed to UART. The module includes a micro-B USB connector to connect to a USB host and the UART IO are available on separate pads. The module is designed to be soldered directly to another PCB (PCB on PCB technology). The UART interface operates between +1.8V and +3.3V voltage levels depending on the VIO signal, however all I/Os are 5V tolerant. USB 20 full speed to basic UART with one control bus line which may be used for battery charger detection
The PCB pads are designed to be soldered directly to another PCB for secure bonding