The C8051F851-C-IU is a device from Silicon Labs’ 8-bit C8051F core microcontroller family. It is an 8-bit microcontroller based on the 8051 architecture and features a 5V power supply, 32 Kbytes of Flash program memory, 1K bytes of RAM, eight 8-bit bidirectional I/O lines, 4 KS-OPS of C-compiler optimization, 12 general-purpose I/O and up to six 16-bit timers. It also features a programmable counter array that can be used as an ADC, PWM, SPI, and I2C peripheral interface. In addition, the device supports sleep and idle modes for power savings. The C8051F851-C-IU is ideal for low-cost, space-constrained embedded systems.