ALP127ALX Datasheet, PDF (3/6 Pages) Sanyo Semicon Device – low power consumption 1.5 inch low temperature poly-silicon TFT-LCD module is suitable for view finder of digital still camera.

Opperating Conditions VSS=0V
Item
Symbol
MIN
TYP
MAX
Unit
Power supply voltage
HVDD
8.2
8.5
8.8
V
VVDD
8.2
8.5
8.8
V
VBB output voltage
VBB
-
-4.0
-
V
Negative Power Supply Generater
To stabilize VBB output voltage, VBB should be tied VSS through a zener diode with smoothing
capacitor as the following diagram.
Zener voltage
4.0V
0.47µF
VBB
VSS
LCD
Input Signal
Item
Symbol
MIN
TYP
MAX
Unit
H driver/Drain storage gate
Low
VHIL
-0.3
0.0
0.3
V
voltage
High
VHIH
2.5
3.0
4.0
V
V driver input voltage
Low
VVIL
-0.3
0.0
0.3
V
High
VVIH
2.5
3.0
4.0
V
CSH
Low VHSIL
-0.3
0.0
0.3
V
High VHSIH HVDD HVDD HVDD
V
CSV
Low VVSIL
-0.3
0.0
0.3
V
High VVSIH
VVDD
VVDD
VVDD
V
Video signal center voltage
analog I/F
VVC
3.30
3.50
3.70
V
digital I/F
VVC
2.55
2.75
2.95
V
Video signal voltage
(analog I/F)
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
Video signal voltage
(digital I/F)
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
Common electrode signal
center voltage
analog I/F
VCOM c
(VVC-0.25) (VVC-0.25)
-0.2
( V V C-0.25)
+0.2
V
digital I/F
VCOM c
(VVC-0.25) (VVC-0.25)
-0.2
( V V C-0.25)
+0.2
V
Common electrode signal
analog I/F _{VCOM p-p}
3.5
V
center range
digital I/F _{VCOM p-p}
3.5
V
Drain storage data signal
VDSD
VVC
V
White LED Backlight Input Current/Voltage
Item
MIN
Forward current
19.5
D.C. voltage(constant current ; 20 mA)
9.5
TYP
20.0
10.5
MAX
Unit
20.5
mA
12.0
V
Tottori SANYO Electric Co., Ltd. Electronic Device Business Headquarters, LCD Division
ALP127ALX Page.3/6