MSM64162 Datasheet, PDF (1/39 Pages) OKI electronic componets – 4-Bit Microcontroller with Built-in RC Oscillation Type A/D Converter and LCD Driver

E2E0033-38-93
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This version: _MSe_Sp_M. 1₆9₄9₁8₆₂
Previous version: Mar. 1996
MSM64162
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 nX-
4/20.
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
: 32.768 kHz, 400 kHz
Operating voltage
: 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)
Operating temperature
: –40 to +85°C
• Memory space
Internal program memory
: 2016 bytes
Internal data memory
: 128 nibbles
• Minimum instruction execution time : 7.5 ms @ 400 kHz
91.6 ms @ 32.768 kHz
• RC oscillation type A/D converter : 2 channels
• LCD driver
: 24 outputs; duty ratio switchable by software
(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)
• Buzzer driver
: 1 output (4 output modes selectable)
• Capture circuit
: 2 channels
• Watchdog timer
• Clock
: 32.768 kHz crystal oscillator and 400 kHz RC
oscillator (with an external resistor)
CPU clock
: 32.768 kHz/400 kHz (switchable by software)
Time base clock
: 32.768 kHz
• Power supply voltage
: 1.5 V/3 V (selectable by mask option)
• I/O port
Input-output port
: 2 ports ¥ 4 bits
Input port
: 1 port ¥ 4 bits
Output port
: 1 port ¥ 4 bits
(8 out of the 24 LCD driver outputs can be used
as output-only ports by mask option.)
• Interrupt sources
External interrupt
: 2 sources
Internal interrupt
: 7 sources
• Battery check circuit
: 1 (incorporated into the input-only port)
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