FEDL9489-02

Issue Date: Apr. 3, 2013

ML9489

Static, 1/2 Duty, 1/3 Duty, 1/4 Duty 160 Outputs LCD Driver

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GENERAL DESCRIPTION

The ML9489 is an LCD driver LSI, consists of a 160-bit shift register, a 640-bit data latch, 160 sets of LCD

drivers, and a common signal generation circuit.

It can directly drive an LCD up to 160 segments for static display, 320 segments for 1/2-duty display, 480

segments for 1/3-duty display, and 640 segments for 1/4-duty display.

FEATURES





Logic power supply voltage

: 2.7 to 5.5 V



LCD drive power supply voltage : 4.5 to 5.5 V



Maximum number of segments

Static display

: 160 segments

1/2-duty display

: 320 segments

1/3-duty display

: 480 segments

1/4-duty display

: 640 segments



Interface with microcomputer :

Serial interface : DATA, CLOCK, LOAD

CLOCK transfer speed up to 1 MHz

: SDA, SCL, SDAACK

SCL transfer speed up to 400 kHz



Built-in CR oscillator circuit using the internal resistor or External resistor



Cascade connectable (up to eight chips)



Built-in common signal generation circuit



Built-in common output intermediate-value voltage generation circuit



Built-in POC (Power On Clear) circuit



Gold bump chip (ML9489DVWA)



Comparison table

Item

ML9479EDVWA

ML9489DVWA

Frame Frequency

(Internal oscillation)

65Hz/75Hz/85Hz/95Hz

(programmable)

130Hz/150Hz/170Hz/190Hz

(programmable)