Technical Description
14
Seiko Epson Corporation
S5U13517P00C100 Evaluation Board
Rev. 1.1
4.5 LCD Panel Interface
The LCD interface signals are available on connectors CN3 and CN5.
Connector CN3 is 0.1x0.1 inch 40-pin header (20x2) and connector CN5 is 0.1x0.1 inch 10-pin header (5x2). For
the pinout of connectors CN3 and CN5, see Chapter 6, “Schematic Diagrams” on page 18.
On the evaluation board there is an adjustable 6~24V, 40mA max. power supply. This voltage is provided only on
connector CN3 (it is not used elsewhere on the board). It is intended for use to power the LED backlight on some
LCD panels. The voltage is adjusted by the VR1 pot.
Note
For LCD panels that use a CCFL backlight, an external power supply must be used to provide power to the inverter
for the CCFL backlight. Usually, the inverter current consumption is higher than the maximum 40mA current
available from the on-board voltage regulator.
The following diagram shows the location of the LCD panel connectors CN3 and CN5.
Figure 4-4: LCD Panel Connectors Location (CN3, CN5)
CN5
CN3
