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7.2. LCD CONTROL CIRCUIT
(1) CIRCUIT OPERATION
The LCD data is output from pins 12 of IC2.
LCD contrast adjustment is performed by the circuit composed of Q10, R44, R45, R46 and R47.
The contrast is determined only by the voltage level between pin 4 of CN1 and +5 V. Higher potential makes the contrast high.
LCD contrast adjustment is performed by the circuit composed of Q10, R44, R45, R46 and R47.
The contrast is determined only by the voltage level between pin 4 of CN1 and +5 V. Higher potential makes the contrast high.
LCD Contrast Control
CONTRAST
IC1 Pin 23
IC2 Pin 24
HIGH
L
L
MIDDLE
H
L
LOW
L
H
12
KX-T7565RU
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