Technical Description
16
Seiko Epson Corporation
S5U13742P00C100 Evaluation Board
Rev. 1.1
4.6 LCD Panel Interface
The LCD interface signals are available on connectors H2 and H3. For S1D13742 LCD
interface pin mapping, refer to the
S1D13742 Hardware Functional Specification
,
document number X63A-A-001-xx.
Connector H2 is 0.1x0.1” 20-pin header (10x2) and connector H3 is 0.1x0.1” 40-pin header
(20x2). For the pinout of connectors H2 and H3, see “Schematic Diagrams” on page 21.
On the evaluation board there is an adjustable 6~24V, 40mA max. power supply. This
voltage is provided only on connector H3 (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 R24 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 con-
sumption is higher than the maximum 40mA current available from the on-board volt-
age regulator.
The following diagram shows the location of the LCD panel connectors H2 and H3.
Figure 4-3: LCD Panel Connectors Location (H2, H3)
For the pinout of connectors H2 and H3, see “Schematic Diagrams” on page 21.
H2
H3
