Template:mpu The Motorola MC14500B or Industrial Control Unit (ICU) is a 1-bit microprocessor designed by Motorola and released in 1976. Production continued well into the 1990s. The MC14500B was designed as an extremely low cost programmable logic controller suited for implementing various ladder logic circuits as replacement for older relay-based systems.

Architecture

Main article: MC14500 Architecture

The MC14500B had a single 1-bit register to whole the result and supported 16 different operations.

Packaging

The MC14500B came in a few different packages for different specifications.

Part	Temperature range
MC14500BCL	Military
MC14500BAL	Industrial
MC14500BCP	Industrial

Documents

• MC14500B Datasheet
• Motorola MC14500B Industial Control Unit Handbook