Tottori SANYO Electric Co., Ltd. Electronic Device Business Headquarters, LCD Division

ALP127ALX

Page.3/6

Symbol

MIN

TYP

MAX

Unit

Low

VHIL

-0.3

0.0

0.3

V

High

VHIH

2.5

3.0

4.0

V

Low

VVIL

-0.3

0.0

0.3

V

High

VVIH

2.5

3.0

4.0

V

Low

VHSIL

-0.3

0.0

0.3

V

High

VHSIH

HVDD

HVDD

HVDD

V

Low

VVSIL

-0.3

0.0

0.3

V

High

VVSIH

VVDD

VVDD

VVDD

V

analog I/F

VVC

3.30

3.50

3.70

V

digital I/F

VVC

2.55

2.75

2.95

V

Black(H) Vblack(H)

5.05

5.25

5.45

V

Black(L) Vblack(L)

1.55

1.75

1.95

V

White-Black

Vsig w-b

2.70

V

Black(H) Vblack(H)

4.30

4.50

4.70

V

Black(L) Vblack(L)

0.80

1.00

1.20

V

White-Black

Vsig w-b

2.70

V

(VVC-0.25)

(VVC-0.25)

(VVC-0.25)

-0.2

+0.2

(VVC-0.25)

(VVC-0.25)

(VVC-0.25)

-0.2

+0.2

analog I/F

VCOM p-p

3.5

V

digital I/F

VCOM p-p

3.5

V

VDSD

VVC

V

MIN

TYP

MAX

Unit

Forward current

19.5

20.0

20.5

mA

D.C. voltage(constant current ; 20 mA)

9.5

10.5

12.0

V

VCOM c

VCOM c

V

V

Video signal voltage

(digital I/F)

Common electrode signal

center range

Item

CSV

Drain storage data signal

Video signal center voltage

Video signal voltage

(analog I/F)

Common electrode signal

center voltage

analog I/F

digital I/F

V driver input voltage

Item

H driver/Drain storage gate

voltage

CSH

LCD

VBB

VSS

White LED Backlight Input Current/Voltage

Opperating Conditions VSS=0V

Symbol

MIN

TYP

MAX

Unit

HVDD

8.2

8.5

8.8

V

VVDD

8.2

8.5

8.8

V

VBB

-

-4.0

-

V

VBB output voltage

Item

Power supply voltage

To stabilize VBB output voltage, VBB should be tied VSS through a zener diode with smoothing

capacitor as the following diagram.

Negative Power Supply Generater

Zener voltage

4.0V

Input Signal

0.47

µF