ST8024 データシートの表示（PDF） - Sitronix Technology Co., Ltd.

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ST8024

COM/SEG LCD Driver

Sitronix Technology Co., Ltd. 

DI6-DI0

XCK

Y1 -Y240

ST8024

Not used

Connect DI6-DI0 to LGND or VDD, avoiding floating.

Not used

XCK is pulled down in common mode, so connect to LGND or open.

LCD drive output pins

Corresponding directly to each bit of the shift register, one level (V0, V12, V43, or VSS) is

selected and output.

Table of truth values is shown in "TRUTH TABLE" in Functional Operations.

7.2

Functional Operations

7.2.1 Truth table

(Segment Mode)

FR

LATCH DATA

L

L

L

H

H

L

H

H

X

X

/DISPOFF

H

H

H

H

L

LCD DRIVE OUTPUT VOLTAGE LEVEL (Y1-Y240)

V43

VSS

V12

V0

VSS

(Common Mode)

FR

LATCH DATA

/DISPOFF

LCD DRIVE OUTPUT VOLTAGE LEVEL (Y1-Y240)

L

L

H

V43

L

H

H

V0

H

L

H

V12

H

H

H

VSS

X

X

L

VSS

NOTES:

VSS < V43 < V12 < V0

L: LGND (0 V), H: VDD (+2.5 to +5.5 V), X: Don't care

"Don't care" should be fixed to "H" or "L", avoiding floating.

There are two kinds of power supply (logic level voltage and LCD drive voltage) for the LCD driver.

Supply regular voltage which is assigned by specification for each power pin.

Ver 2.1

Page 9/28

2009/08/19

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