MSM64169 Datasheet, PDF (1/25 Pages) OKI electronic componets – Built-in Dual-slope type A/D Converter and LCD Driver 4-Bit Microcontroller

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MSM64169
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Built-in Dual-slope type A/D Converter and LCD Driver 4-Bit Microcontroller
GENERAL DESCRIPTION
The MSM64169 is a low-power 4-bit microcontroller that incorporates OKI's nX-4/30 CPU core.
The MSM64169 has a minimum instruction execution time of 4.3 ms (@ 700 kHz). The device
contains 8160 bytes of program memory, a 1024-nibble data memory, a dual-slopetype A/D
converter with a 4-channel input, LCD drivers that can drive up to 240 segments, a synchronous/
asynchronous selectable serial port, a 16-bit timer, and a buzzer output port.
Applications include high resolution thermometers with low power consumption, barometers,
and hygrometers.
FEATURES
• Operating range
Operating frequencies (dual clock) : 32 kHz, 700 kHz
Operating voltage
: 2.6 V to 3.6 V
Operating temperature
: –40°C to +85°C
• Memory space
Internal program memory
: 8160 bytes
Internal data memory
: 1024 nibbles
• Minimum instruction execution time : 4.3 ms (@ 700 kHz)
91.6 ms (@ 32.768 kHz)
• Dual-slope type A/D converter
: 1; 4-channel input
• LCD drivers
: 64; duty ratio switchable by software
(1) At 1/4 duty, 1/3 bias
: 240 segments (max.)
(2) At 1/3 duty, 1/3 bias
: 183 segments (max.)
(3) At 1/2 duty, 1/2 bias
: 124 segments (max.)
• Buzzer driver
: 1; four modes for controlling buzzer output
ON/OFF
• Timer
: 16-bit ¥ 1
Auto-reload mode
Capture mode
Clock frequency measuring mode
• Watchdog timer
• Clock
: 32.768 kHz quartz oscillator and 700 kHz
RC oscillator (with an external resistor)
CPU clock
: 32.768 kHz/700 kHz (selectable by software)
Time base clock
: 32.768 kHz
• Power supply voltage
: 3 V low power
• I/O port
: 3 ports ¥ 4 bits
• Output only port
: 2 ports ¥ 4 bits (8 out of 64 LCD drivers can be used
as output-only ports via mask programming)
• Serial port
: Synchronous/asynchronous mode support
Synchronous mode
: 32.768 kHz/external clock
Asynchronous mode
: 9600 bps/4800 bps/2400 bps/1200 bps
• Interrupts
: 10 sources (2 external, 8 internal)
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