Cypress Semiconductor CY7C63813-SXC, USB Controller, 1.5Mbps, USB 2.0, 3.3 V, 18-Pin SOIC

enCoRe II is a family of programmable Low Speed USB 1.1 microcontrollers.

USB 2.0-USB-IF certified (TID # 40000085)
EnCoRe™ II USB - ’enhanced Component Reduction’
Crystal less oscillator with support for an external clock. The internal oscillator eliminates the need for an external crystal or resonator
Two internal 3.3 V regulators and an internal USB Pull-up resistor
Configurable I/O for real world interface without external components
USB Specification compliance
Conforms to USB Specification, Version 2.0
Conforms to USB HID Specification, Version 1.1
Supports one low speed USB device address
Supports one control endpoint and two data endpoints
Integrated USB transceiver with dedicated 3.3 V regulator for
USB signalling and D– pull-up
Enhanced 8-bit microcontroller
Harvard architecture
M8C CPU speed is up to 24 MHz or sourced by an external clock signal
Internal memory
Up to 256 bytes of RAM
Up to eight Kbytes of flash including EEROM emulation
Interface can auto configure to operate as PS/2 or USB
No external components for switching between PS/2 and USB modes
No General Purpose I/O (GPIO) pins required to manage dual mode capability
Low power consumption
Typically 10 mA at 6 MHz
10 μA sleep
In system re programmability
Allows easy firmware update

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.