GENERAL DESCRIPTION
The MSM64158A (1.5 V)/64158AL (3.0 V) is a high-performance 4-bit microcontroller that incroporates Oki-original CPU core nX-4/20.
The MSM64158A/64158AL has an LCD driver for up to 144 segments, an event counter, and a melody circuit. It is best suited for applications such as clocks and LCD games.