PT6553-Q datasheet(11/41 Pages) PTC

Part #	PT6553-Q

Description	LCD Driver IC with Key Input Function

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Manufacturer	PTC [Princeton Technology Corp]

Direct Link	http://www.princeton.com.tw

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Tel: 886-2-66296288

Fax: 886-2-29174598

URL: http://www.princeton.com.tw

PT6553 V1.7

- 11 -

November, 2007

LCD Driver IC with Key Input Function

PT6553

SEGMENT ON/OFF CONTROL DATA BITS: SC

SC is used to control the ON/OFF state of segments.

SC

Display State

0

On

1

Off

When SC is set to "0", the segment display state is "ON". When SC is set to "1", the segment display is

"OFF". This "OFF" state is achieved by outputting segment "OFF" waveforms from the segment output

pins.

1/2 BIAS OR 1/3 BIAS DRIVE SELECTION DATA BIT: DR

DR is the control data bit used to select either an LCD 1/2 or 1/3 bias drive. When DR is set to "0", the

1/3 LCD Bias Drive is selected. On the other hand, if DR is set to "1", the 1/2 LCD Bias Drive is

selected.

DR

LCD Bias Drive

0

1/3

1

1/2

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