The MSM64169 is a low-power 4-bit microcontroller that incorporates OKI's nX-4/30 CPU core. The MSM64169 has a minimum instruction execution time of 4.3 ms (@ 700 kHz). The device contains 8160 bytes of program memory, a 1024-nibble data memory, a dual-slopetype A/D converter with a 4-channel input, LCD drivers that can drive up to 240 segments, a synchronous/ asynchronous selectable serial port, a 16-bit timer, and a buzzer output port. Applications include high resolution thermometers with low power consumption, barometers, and hygrometers.