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HD404818 Datasheet, PDF (10/100 Pages) Hitachi Semiconductor – 16-digit LCD driver
HD404818 Series
LCD Driver/Controller
V1, V2, V3: Power supply pins for the LCD driver. Since the LCD driving resistors are provided internally,
no lines should be connected to these pins. The voltage on each pin is VCC ≥ V1 ≥ V2 ≥ V3 ≥ GND. See the
Liquid Crystal Display section for details.
COM1 to COM4: Common signal output pins for the LCD display. See the Liquid Crystal Display section
for details.
SEG1 to SEG32: Segment signals output pins for the LCD display. See the Liquid Crystal Display section
for details.
Voltage Comparator
COMP0, COMP1, VCref: Analog input pins for the voltage comparator. VCref is used as a reference voltage
pin to input the threshold voltage of the analog input pin.
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