The C8051F865-C-GS is an 8-bit microcontroller produced by Silicon Labs. It is based on the 8051 microcontroller core and features an enhanced 8051-compatible instruction set, an on-chip 16KB program Flash memory, and a powerful 8KB data memory that includes programmable Flash and RAM. The device is optimized for low-power consumption and easy integration into a variety of applications. It has built-in communications peripherals, including USB, I2C, SPI, and UART ports, as well as a high-resolution capacitive touch screen controller for use in touch-enabled applications. The device also integrates several power management features, including an on-chip 32kHz oscillator and 16-bit timer, which enable system-level power savings that are critical for embedding into portable and battery-powered applications.