EL640.400-C2, -C3 and –CD3 Operations Manual (020-0355-00A)
5
Input to the Display
Table 1. Input to the Display.
Pins Signal Symbol Description
J1(Data/power input connector)
1, 2 Voltage Vcc2
Supply voltage (+11…+30 V) converted to required
internal high voltages (see J2).
3, 4 Voltage Vcc1 Supply voltage (+5 V) for the logic (see J2).
5 Blanking _BLANK Used in VGA and SPECIAL modes. In NORMAL mode
should be high or left disconnected.
6,8,10
12,14,16
Ground
GND
Signal return.
7 Two-bit
data
TVID Second data input for two bit parallel mode. The
TVID input is for odd columns and the VID for even
ones.
9 Vertical
Sync
VS The vertical sync signal VS controls the vertical
position of the picture.
11 Horizontal
Sync
HS The horizontal sync signal HS controls the internal
row counter and in the NORMAL mode the
horizontal position of the picture.
13 Video
Clock
VCLK The VCLK signal shifts data present on the VID and
TVID lines into the display system. VCLK is active on
the rising edge.
15 Video Data VID Signal that supplies the pixel information to the
system.
J2 (Optional power input connector)
1 Voltage Vcc2 Same as J1, Pins 1, 2 (not necessary to connect if
power is supplied via J1).
2, 3 Ground GND Same as J1 Pins 6, 8, 10, 12, 14, 16 (not necessary to
connect if power is supplied via J1).
4 Voltage Vcc1 Same as J1 Pins 3, 4 (not necessary to connect if
power is supplied via J1).
5 Low Power _LOWPWR The power consumption of the display is lowered to
LOW-POWER-OPERATION values if the _LOWPWR is
low, internally pulled high if left disconnected.
6 Enable ENABLE The operation of the display unit is disabled if the
ENABLE input is low, internally pulled high (enable)
if left disconnected.
J3 (Optional control input connector)
1 Luminance
Pot.1
LUMPOT1
The inputs for an external logarithmic
50k
Ω potentiometer to adjust the luminance of the
display. Can be left disconnected. The luminance is
then at the maximum level.
2 Luminance
Pot.2
LUMPOT2
3 Reserved Reserved for future use.
4 Reserved Reserved for future use.
For ordering information of el640-400-c3 and other EL Displays, please visit http://www.eldisplays.com/el640-400-c3/ or call +1-888-394-4998.
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