UPD16682AP datasheet(13/58 Pages) RENESAS

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Data Sheet S14402EJ1V0DS

µµµµPD16682A

3.3 Driver System Pins

Pin Symbol

Pin Name

Pad No.

I/O

Description

SEG0 to SEG131

Segment

126 to 257

Output

Segment output pins

COM0 to COM63

Common

91 to 122,

260 to 291

Output

Common output pins

COMS

Indicator common

123,292

Output

Common output pins for indicator

The same signal is output from pin 2.

VRS

55,56

These are input pins for the op amp that regulates the LCD

driver voltage.

Leave the VRS pin open when using the on-chip power supply.

Op amp inputs

69,70

Input

When not using the on-chip power supply, a reference voltage

VREG must be input.

When using an external power supply, connect the VR pin to a

resistor used to regulate the LCD voltage.

DUMMY1 to

DUMMY8

Dummy pins

1,89,90,124,125,

258,259,293

—

Since these pins are not connected to any internal circuits, they

should be left open when they are not being used.

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