ML9478C Datasheet, PDF (1/31 Pages) List of Unclassifed Manufacturers – Static, 1/2 Duty, 1/3 Duty, 1/4 Duty 80 Outputs LCD Driver

ML9478C
Static, 1/2 Duty, 1/3 Duty, 1/4 Duty 80 Outputs LCD Driver
FEDL9478C-01
Issue Date: Apr. 25, 2012
GENERAL DESCRIPTION
The ML9478C 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 I²C interface are selectable.
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
I²C interface : 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 (ML9478CDVWA)
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