
VIPER Technical Manual
Detailed hardware description
© 2007 Eurotech Ltd Issue E
38
STN BIAS voltage
The VIPER provides a negative and a positive bias voltage for STN type displays.
The negative and positive bias voltages are set to –22V and +22V respectively.
Pin connections for these can be found in the section
Please contact Eurotech Ltd for details of other bias voltages. Contact details are
provided in
Appendix A – Contacting Eurotech
Do not exceed 20mA load current.
VIPER-FPIF1 details
The VIPER-FPIF1 allows easy connection between the VIPER and a variety of TFT or
STN LCD flat panel displays.
The connectors on the following pages are shown in the same orientation as
the picture above.
Connector Function
LK1
TFT clock delay selection
PL1
VIPER LCD cable connector
PL2
Generic LCD connector
PL3
Direct connection to a NEC NL3224BC35-20 5.5inch 320x240 TFT
display
PL4
Connects to backlight inverter
PL5
STN bias voltages