enCoRe™ USB Combination Low-Speed USB and PS/2 Peripheral Controller is a flexible, cost-effective solution for applications that combine PS/2 and low-speed USB, such as mice, game-pads, joysticks, and many others. The device has an internal oscillator, which eliminates the need for an external crystal or resonator. The interface can automatically configure to operate as PS/2 or USB, without the need for external components to switch between modes. The device also has an internal 3.3V regulator for the USB pull-up resistor and configurable GPIO for real-world interface, without external components.