FEDL9477-01

Issue Date: Mar. 1, 2010

ML9477

1/3 or 1/4 Duty, 32-Output LCD Driver

1/20

GENERAL DESCRIPTION

The ML9477 is an LCD driver for dynamic display. It has a function to switch between 1/3 and 1/4 duty. When

1/4 duty is selected, an LCD of up to 128 segments can be driven directly; when 1/3 duty is selected, an LCD of

up to 96 segments can be driven directly.

FEATURES

 Logic power supply voltage

: 2.7 to 3.6 V, 4.5 to 5.5 V

 Driver power supply voltage

: 3.5 to 5.5 V

 Operating temperature

:

40 to +105°C

 32 segment outputs

1/4 duty

: Up to 128 segments can be displayed.

1/3 duty

: Up to 96 segments can be displayed.

 Serially interfaces with the CPU using the three signal lines of LOAD, DATA_IN, and CLOCK

 Built-in RC oscillator circuit for LCD AC drive (the CLKSEL pin allows selecting an external clock input)

 Built-in voltage-dividing resistor for bias voltage generation

 Package

: 48-pin plastic TQFP (TQFP48-P-0707-0.50-K)