MSM64162A Datasheet | OKI Electric

DESCRIPTION The MSM64162A is a low power 4-bit microcontroller that employs Oki's original CPU core n X4/20. The MSM64162A 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 k Hz, 400 k Hz 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 Operating temperature - Memory space Internal program memory Internal data memory - Minimum instruction execution time : : : : 2016 bytes 128 nibbles 7.5 ms @ 400 k Hz 91.6 ms @ 32.768 k Hz - RC oscillation type A/D converter : 2 channels Time division 2-channel method - LCD driver : 24 outputs (1) At 1/4 duty and 1/3 bias : 80 segments (max) (2) At 1/3 duty and 1/3 bias : 63 segments (max) (3) At 1/2 duty and 1/2 bias : 44 segments (max) Voltage Regulator for LCD Driver (selectable by mask option) The LCD panel display is stable regardless of temporary supply voltage drop, because the voltage generated by the voltage regulator for LCD driver is supplied to the bias voltage generator as a reference voltage. LCD Operating Voltage When the voltage regulator for LCD driver is used : 3.6 V (Duty cycle = 1/4 or 1/3) 2.4 V (Duty cycle = 1/2) When the voltage regulator for LCD driver is not used : 4.5 V (Duty cycle = 1/4 or 1/3) 3.0 V (Duty cycle = 1/2) - Buzzer driver : 1 output (4 output modes selectable) - Capture circuit : 2 channels - Watchdog timer - Clock : 32.768 k Hz crystal oscillator and 400 k Hz RC oscillator (with an external resistor) CPU clock : 32.768 k Hz/400 k Hz (switchable by software) Time base clock : 32.768 k Hz - Power supply voltage : 1.5 V/3 V (selectable by mask option) 1/40 ¡ Semiconductor - I/O port Input-output port Input port Output port : : : 2 ports - 4 bits 1 port - 4 bits 1 port - 4 bits (8 out of the 24 LCD driver...