ST8024T Sitronix Technology, ST8024T Datasheet - Page 9

• Manufacturer Part Number: ST8024T
• Description: COM/SEG LCD Driver
• Manufacturer: Sitronix Technology

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7.2
7.2.1
(Segment Mode)
(Common Mode)
NOTES:
Preliminary Ver 0.12
V
L: LGND (0 V), H: V
"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.
SS
Y
FR
FR
DI
H
H
X
H
H
X
L
L
L
L
XCK
1
S/C
< V
DI
6
-Y
-DI
7
Functional Operations
Truth table
240
43
0
< V
LATCH DATA
LATCH DATA
12
< V
Dual mode data input pin
Segment mode/common mode selection pin
Not used
Not used
LCD drive output pins
"H" dual mode operation is selected.
Refer to section 7.2.2.
According to the data shift direction of the data shift register, data can be input starting
from the 121st bit.
When the chip is used in dual mode, DI
When the chip is used in single mode, DI
Refer to section 7.2.2.
When set to LGND level "L", common mode is set.
Connect DI
XCK is pulled down in common mode, so connect to LGND or open.
Corresponding directly to each bit of the shift register, one level (V
selected and output.
Table of truth values is shown in "TRUTH TABLE" in Functional Operations.
0
H
H
X
H
H
X
L
L
L
L
DD
(+2.5 to +5.5 V), X: Don't care
6
-DI
0
/DISPOFF
/DISPOFF
to LGND or V
H
H
H
H
H
H
H
H
L
L
DD
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, avoiding floating.
LCD DRIVE OUTPUT VOLTAGE LEVEL (Y1-Y240)
LCD DRIVE OUTPUT VOLTAGE LEVEL (Y1-Y240)
7
will be pulled down.
7
won't be pulled down.
V
V
V
V
V
V
V
V
V
V
SS
SS
SS
SS
43
12
43
12
0
0
0
, V
12
, V
43
, or V
ST8024T
SS
2008/01/24
) is