Rev. 1.00

5

April 18, 2014

HT9B92G

Pad Description

Pin Name

Type

Description

SDA

I/O

Serial Data Input/Output pin

SCL

I

Serial Clock Input pin

OSCIN

I

External Clock Input pin

The external and internal clock mode can be selected by the command. When the

TEST1

I

Test mode input pin

TEST2

I

Power on reset control pin

function will be performed by executing the software reset command.

COM0~COM3

O

LCD Common outputs.

SEG0~SEG39

O

LCD Segment outputs.

VDD

—

Positive power supply.

VSS

—

Negative power supply, ground.

VLCD

—

LCD power supply pin

Approximate Internal Connections

VDD

VSS

SCL, SDA (for Schmitt trigger type)

COM0~COM3; SEG0~SEG39

TEST1, TEST2

OSCIN

VSS

VDD

VLCD

VSS

VLCD

VSS

VDD

VSS