PT6553_10 Datasheet, PDF (11/41 Pages) Princeton Technology Corp – LCD Driver IC with Key Input Function

LCD Driver IC with Key Input Function
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URL: http://www.princeton.com.tw
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
PT6553 V1.7
- 11 -
November, 2007