FEDL9488-01

Issue Date:

Jan. 15, 2013

ML9488

Static, 1/2 Duty, 1/3 Duty, 1/4 Duty 80 Outputs LCD Driver

1/31

GENERAL DESCRIPTION

The ML9488 is an LCD driver LSI, consists of a 80-bit shift register, a 320-bit data latch, 80 sets of LCD drivers,

and a common signal generation circuit.

It can directly drive an LCD up to 80 segments for static display, 160 segments for 1/2-duty display, 240

segments for 1/3-duty display, and 320 segments for 1/4-duty display.

The three-wire serial interface and I

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

: 80 segments

1/2-duty display

: 160 segments

1/3-duty display

: 240 segments

1/4-duty display

: 320 segments



Interface with microcomputer :

Serial interface

: DATA, CLOCK, LOAD

CLOCK transfer speed up to 1 MHz

I

: 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 sixteen 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 (ML9488DVWA)



Comparison table

Item

ML9478CDVWA

ML9488DVWA

Frame Frequency

(Internal oscillation)

65Hz/75Hz/85Hz/95Hz

(programmable)

130Hz/150Hz/170Hz/190Hz

(programmable)