The MC14500B Industrial Control Unit (ICU) is a single–bit CMOS processor. The ICU is designed for use in systems requiring decisions based on successive single–bit information. An external ROM stores the control program. With a program counter (and output latches and input multiplexers, if required) the ICU in a system forms a stored–program controller that replaces combinatorial logic. Applications include relay logic processing, serial data manipulation and control. The ICU also may control an MPU or be controlled by an MPU.

• 16 Instructions
• DC to 1.0 MHz Operation at VDD = 5 V
• On–Chip Clock (Oscillator)
• Executes One Instruction per Clock Cycle
• 3 to 18 V Operation
• Low Quiescent Current Characteristic of CMOS Devices
• Capable of Driving One Low–Power Schottky Load or Two Low–Power
   TTL Loads over Full Temperature Range