MSM64162

E2E0033-38-93 ¡ Semiconductor MSM64162 ¡ Semiconductor This version: MSM64162 Sep. 1998 Previous version: Mar. 1996 4-Bit Microcontroller with Built-in RC Oscillation Type A/D Converter and LCD Driver GENERAL DESCRIPTION The MSM64162 is a low power 4-bit microcontroller that employs Oki's original CPU core nX4/20. The MSM64162 has 2-channel RC oscillation type A/D converter, LCD driver for up to 80 segments, and buzzer output port. It is best suited for applications such as low power, high precision thermometers and hygrometers. FEATURES Operating range Operating frequencies Operating voltage : : 32.768 kHz, 400 kHz 1.25 to 1.7 V (1.5 V spec.) 2.0 to 3.5 V (3 V spec.) 2.2 to 3.5 V (3 V spec., 1/2 duty) –40 to +85°C 2016 bytes 128 nibbles 7.5 ms @ 400 kHz 91.6 ms @ 32.768 kHz 2 channels 24 outputs; duty ratio switchable by software 80 segments (max) 63 segments (max) 44 segments (max) 1 output (4 output modes selectable) 2 channels 32.768 kHz crystal oscillator and 400 kHz RC oscillator (with an external resistor) 32.768 kHz/400 kHz (switchable by software) 32.768 kHz 1.5 V/3 V (selectable by mask option) 2 ports ¥ 4 bits 1 port ¥ 4 bits 1 port ¥ 4 bits (8 out of the 24 LCD driver outputs can be used as output-only ports by mask option.) 2 sources 7 sources 1 (incorporated into the input-only port) Operating temperature Memory space Internal program memory Internal data memory Minimum instruction execution time RC oscillation type A/D converter LCD driver (1) A...