The USB-Serial Bridge Controller offers dual configurable serial channels for UART/I²C/SPI interfaces, with low power consumption in stand-by mode.
The CY7C65215 controller integrates CapSense capacitive-touch sensing technology (for touch sensitive key switches) and Battery Charging Detection logic. The controller features up to 19-pins for Inputs/Outputs.

USB-Serial Software Development Kit (SDK) at cypress.com
USB-IF Battery Charging specification version 1.2 compliant
Ideal for USB connectivity applications with the CY7C65215 USB-Serial Dual Channel (UART/I²C/SPI) Bridge with CapSense and BCD

CYUSBS236 Development board
Quick start guide
USB Type-A to Micro-B cable
Jumper wires
Samples of CY7C65215 USB-Serial Dual Channel Bridge with CapSense and BCD
Power Supply 5 V dc

USB (Universal Serial Bus), Cypress Semiconductor

USB is a cable bus supporting data exchange between a host computer and a wide range of simultaneously accessible peripherals. There is a differential signal data interface for transmit and receive communication path. The bus includes power at 5 Volts.