The MCR100-8G is an 8-pin microcontroller from ON Semiconductor. It is a low-voltage microcontroller with an 8-bit RISC architecture. The processor operates from a single 1.8V to 3.6V supply, and provides up to 1.5 MIPS at 20MHz. The MCR100-8G has 2KB of RAM, 38 kB of Flash, an 8-bit A/D converter, four 16-bit timers, and two serial ports. It also includes an I2C bus and 6 external interrupt pins. The device has a built-in brown-out detector and clock monitors. It is also capable of low-power operation, making it suitable for battery-powered applications.