The C8051F819-GU is an 8-bit microcontroller from Silicon Labs. It is a member of the 8051FXXX family and features an 8-bit 8052-compatible central processing unit (CPU) core, 160 kB Flash program memory, 2 kB of RAM, integrated analog-to-digital (A/D) converter, timer/counter, serial port, two separate ports, and multiple interrupt sources as well as an internal oscillator. The device can be used for general purpose control, embedded system, and real-time applications. It also features minimal power consumption and fast wake-up times. This microcontroller is an ideal choice for applications involving sensing, control, and communication.