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GENERAL DESCRIPTION

The MSM6775 is an LCD driver for dynamic display providing 3-duty-switchable pins (1/3, 1/4 and 1/5 duty). It can directly drive LCDs of up to 400, 320 and 240 segments when 1/5, 1/4 and 1/3 duty are selected, respectively.

FEATURES

? Operating range

Supply voltage (VDD) : 2.7 to 5.5V

Operating temperature (Top) : –40 to +85°C

LCD driving voltage (VDD-VLC3) : 3.5 to 5.5V

? Segment output : 80 pins

1/5 duty : Up to 400 segments can be displayed.

1/4 duty : Up to 320 segments can be displayed.

1/3 duty : Up to 240 segments can be displayed.

? Serial transfer clock frequency : 4MHz

? Serial interface with CPU : Through three input pins (DATA, LOAD, and CLOCK)

? One-to-one corresponcence between input data and its output

When input data is at H level : Display goes on.

When input data is at L level : Display goes off.

? Built-in oscillator circuit for COMMON signals

? The entire display can be turned off. (BLANK pin)

? Package:

100-pin plastic TQFP (TQFP100-P-1414-0.50-K) (Product name : MSM6775TS-K)