MSM64164C Datasheet, PDF (1/41 Pages) OKI electronic componets – 4-Bit Microcontroller with Built-in RC Oscillation Type A/D Converter and LCD Driver

E2E0035-38-94
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This version_M: _SSe_Mp₆. ₄1₁9₆98_4C
Previous version: Apr. 1998
MSM64164C
4-Bit Microcontroller with Built-in RC Oscillation Type A/D Converter and LCD Driver
GENERAL DESCRIPTION
The MSM64164C is a low power 4-bit microcontroller that employs Oki's original CPU core nX-
4/20.
The MSM64164C is best suitable for applications such as low power, high precision thermome-
ters and hygrometers.
The MSM64P164 is a one-time-programmable ROM-version product having one-time PROM
(OTP) as internal program memory.
The MSM64P164 is used to evaluate the software development.
The MSM64P164 differs from the MSM64164C in the polarity of the power supply.
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
: 4064 bytes
Internal data memory
: 256 nibbles
• Minimum instruction execution time : 7.5 ms @ 400 kHz
91.6 ms @ 32.768 kHz
• RC oscillation type A/D converter : 2 channels
Time dividing 2-channel method
• Serial port
: Synchronous 8-bit transfer
• LCD driver
: 34 outputs; duty ratio switchable by software
(1) At 1/4 duty and 1/3 bias
: 120 segments (max)
(2) At 1/3 duty and 1/3 bias
: 93 segments (max)
(3) At 1/2 duty and 1/2 bias
: 64 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
: 3 ports ¥ 4 bits
Input port
: 1 port ¥ 4 bits
Output port
: 1 port ¥ 4 bits
(8 out of the 34 LCD driver outputs can be used
as output-only ports by mask option.)
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