The Microcontroller MC9S12E128 is low cost general purpose MCU comprised of standard on chip peripherals. It including a 16 bit central processing unit up to 128K bytes of Flash EEPROM, up to 8K bytes of RAM, three asynchronous serial communications interface modules , a serial peripheral interface, an Inter IC Bus and three 4 channel 16 bit timer modules.

Windowed COP watchdog
Real time interrupt
Clock monitor
Pierce or low current Colpitts oscillator
Phase locked loop clock frequency multiplier
Self Clock mode in absence of external clock