The Intel 809x/839x/879x ICs are 12 MHz, 16 bit microcontrollers. The microchip is based on a 5 V, 3 micrometre, HMOS process. The microcontroller has an on-chip ALU, 4 channel 10 bit analog-to-digital converter (ADC), 8 bit pulse width modulator (PWM), watchdog timer, 4 16bit software timers, hardware multiply and divide, and 8 KB of on-chip ROM. The 8095 is ROMless and has five 8-bit high speed I/O, full duplex serial port, as well as an ADC input and PWM output.