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MSM64162A Fiches technique(PDF) 1 Page - OKI electronic componets

No de pièce MSM64162A
Description  4-Bit Microcontroller with Built-in RC Oscillation Type A/D Converter and LCD Driver
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Fabricant  OKI [OKI electronic componets]
Site Internet  http://www.oki.com
Logo OKI - OKI electronic componets

MSM64162A Fiches technique(HTML) 1 Page - OKI electronic componets

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¡ Semiconductor
MSM64162A
¡ Semiconductor
MSM64162A
4-Bit Microcontroller with Built-in RC Oscillation Type A/D Converter and LCD Driver
GENERAL DESCRIPTION
The MSM64162A is a low power 4-bit microcontroller that employs Oki's original CPU core nX-
4/20.
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
:
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
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 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)
E2E0049-18-95
This version: Sep. 1998


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