ST8024S

Ver 0.39

Page 8/27

2008/05/05

"H" dual mode operation is selected.

Ÿ

Refer to section 6.2.2.

Dual mode data input pin

Ÿ

According to the data shift direction of the data shift register, data can be input starting

from the 121st bit.

Ÿ

Refer to section 6.2.2.

S/C

Segment mode/common mode selection pin

Ÿ

When set to LGND level "L", common mode is set.

Not used

Ÿ

XCK

Not used

Ÿ

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

LCD drive output pins

Ÿ

selected and output.

Ÿ

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

6.2

Functional Operations

6.2.1

Truth table

(Segment Mode)

FR

LATCH DATA

/DISPOFF

LCD DRIVE OUTPUT VOLTAGE LEVEL (Y1-Y240)

L

L

H

L

H

H

H

L

H

H

H

H

X

X

L

(Common Mode)

FR

LATCH DATA

/DISPOFF

LCD DRIVE OUTPUT VOLTAGE LEVEL (Y1-Y240)

L

L

H

L

H

H

H

L

H

H

H

H

X

X

L

NOTES:

3. "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.