MSM64167E

FEDL64167E-02 ¡ Semiconductor FEDL64167E-02 This version: Dec. 1999 MSM64167E Previous version: Jul. 1999 ¡ Semiconductor MSM64167E GENERAL DESCRIPTION 4-Bit Microcontroller with Built-in Dual-Slope Type A/D Converter and LCD Driver The MSM64167E is a low power 4-bit microcontroller that employs Oki's original CPU core nX4/20. The MSM64167E contains a dual-slope type A/D converter with a 4-channel input, LCD driver for up to 108 segments, and buzzer output port. The MSM64167E is best suited for applications such as low power, high precision thermometers, barometers, and hygrometers. FEATURES Operating range Operating frequencies Operating voltage Operating temperature Memory space Internal program memory Internal data memory Minimum instruction execution time Dual-slope type A/D converter LCD driver (1) At 1/4 duty and 1/3 bias (2) At 1/3 duty and 1/3 bias (3) At 1/2 duty and 1/2 bias Buzzer driver Timer Auto-reload mode Capture mode Clock frequency measuring mode Watchdog timer Clock CPU clock Time base clock Power supply voltage I/O port Input-output port Output port : : : : : : : : : : : : : 32.768 kHz, 700 kHz 2.6 to 3.6 V –40 to +85°C 4064 bytes 256 nibbles 4.3 ms @ 700 kHz 91.6 ms @ 32.768 kHz 4-channel input 31 outputs; duty ratio switchable by software 108 segments (max) 84 segments (max) 58 segments (max) 1 output (4 output modes selectable) 16-bit ¥ 1 : : : : : : 32.768 kHz crystal oscillator and 700 kHz RC oscillator (with an external r...