beneq EL640.400-C2, Operation Manual

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Operation Manual
EL640.400-C2, -C3 and -
CD3 Display
Beneq Products Oy
Olarinluoma 9 Tel. +358 9 7599 530 VAT ID FI25115461
FI-02200 Espoo Fax +358 9 7599 5310 www.beneq.com
Finland lumineq@beneq.com www.lumineq.com
Date: September 23, 2014 Document number: ED000821B Page | 6
Pins Signal Symbol Description
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 50 kΩ
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.
3.3 Control basics
The TFEL panel has 640 transparent column electrodes crossing 400 row electrodes in an X-Y
fashion. Light is emitted when an AC voltage is applied at a row-column intersection. The
display operation is based on the symmetric, line-at-a-time data addressing scheme, which is
synchronized by the external VS, HS, and VCLK input signals. The internal control signals and
the high voltage pulses for the column and row drivers are generated internally by the control
electronics. All control signal inputs are HCT-compatible with a 100 Ω series resistor.
3.4 Power input
The required supply voltages for the display are +5 V
DC
(V
cc1
) for the logic and +11 V
DC
…+30
V
DC
input (V
cc2
) for the integrated DC/DC converter. The high voltages needed for driving the
display are generated by the DC/DC converter from the V
cc2
input voltage. The input voltages
can be connected either through J1 or J2.