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ML9445

LAPIS
Part Number ML9445
Manufacturer LAPIS
Description 180-Channel LCD Driver
Published May 8, 2014
Detailed Description FEDL9445-02 Issue Date: Dec. 20, 2013 ML9445 180-Channel LCD Driver with Built-in RAM for LCD Dot Matrix Displays GENE...
Datasheet PDF File ML9445 PDF File

ML9445
ML9445

Overview
FEDL9445-02 Issue Date: Dec.
20, 2013 ML9445 180-Channel LCD Driver with Built-in RAM for LCD Dot Matrix Displays GENERAL DESCRIPTION The ML9445 is an LSI for dot matrix graphic LCD devices carrying out bit map display.
This LSI can drive a dot matrix g raphic LCD di splay panel un der t he con trol of an 8- bit microcomputer (h ereinafter des cribed MPU ).
Since all the functions necessary for driving a bit map type LCD device are incorporated in a single chip, using the ML9445 makes it possible to realize a bit map type dot matrix graphic LCD display system with only a few chips.
Since the bit map method in which one bit of display RAM data turns ON or OFF one dot in the display panel, it is possible to carry out displays with a high degree of freedom such as Chinese character displays, etc.
With one chip, it is possible to construct a graphic display system with a maximum of 65 × 180 dots.
The ML9445 has 65 common signal outputs and 180 segment signal outputs and one chip can drive a display of up to 65 × 180 dots.
FEATURES • Direct display of the RAM data using the bit map method Display RAM data “1” .
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Dot is displayed Display RAM data “0” .
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Dot is not displayed (during forward display) • Dis play RAM capacity 65 × 180 × 2 = 23,400 bits • LCD Drive circuits 65 common outputs, 180 segment outputs • MPU interface: Can select an 8-bit parallel or serial interface or I2C (Write Only) • Built-in voltage multiplier circuit for the LCD drive power supply • Built-in LCD drive voltage adjustment circuit • Built-in LCD drive bias generator circuit • Can select frame reversal drive or line reversal drive by command • Built-in oscillator circuit (Internal RC oscillator/external clock input) • A variety of commands Read/write o f d isplay d ata, d isplay O N/OFF, f orward/reverse d isplay, all d ots O N/all dots OFF, set p age address, set display start address, etc.
• P ower supply voltage Logic power supply: VDD-VSS = 2.
7 V to 5.
5 V Voltage multiplier reference volt...


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