Motorola 14500B

Motorola 14500B

(processor)(MC14500B) A 1-bit ICU from Motorola.Probably the limit in small processors, the 14500B had a 4-bitinstruction and controlled a single data read/write line, usedfor application control. It had no address bus - that was anexternal unit that was added on. Another CPU could be usedto feed control instructions to the 14500B in an application.It had only 16 pins, less than a typical RAM chip, and ranat 1 MHz.