ETC LG128645

LG128645
128 x 64 dots
Built in 8192 Chinese Fonts
ABSOLUTE MAXIMUM RATINGS
Item
Supply Voltage(Logic)
Supply Voltage(LCD)
Input Voltage
Operating Temp.
Storage Temp.
MECHANICAL DATA
Symbol
Min.
Max.
Unit
VDD - VSS
VO - VSS
VI
Topr
Tstg
-0.3
5.5
-0.3
-0.3
7.0
VDD + 0.3
70
80
V
V
V
C
-20
-30
C
â0.25V )
Symbol
Input High Voltage
Input Low Voltage
Output High Voltage
Output Low Voltage
Supply Current
LCD Driving Voltage
VIH
VIL
VOH
VOL
I DD
VO - VSS
Test
Condition
---
Typ.
Min.
0.7VDD
- 0.3
I OH = - 0.1mA 0.8VDD
I OL = 0.1mA
0
-VDD = 5.0V
-Ta=25 C
-----
Pin
Symbol
Level
V
V
V
V
mA
1
2
3
4
VSS
V DD
NC
RS
R/W
E
0V
+5V
--
BLOCK DIAGRAM
Control Signals
ST7921
VSS
VDD
RS(CS)
R/W(SID)
E(SCLK)
PS
/RST
LCD
Controller
LSI
64 SEG
128 x 32 dots
128 x 32 dots
32 COM
32 SEG
DB0
V
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
PSB
NC
/RST
NC
LEDA
LEDK
H/L
H/L
_
H,H >L
H/L
H/L
H/L
H/L
H/L
H/L
H/L
H/L
H/L
-L
-+5V
0V
Function
GND
Power supply for logic
No connection
H : Data L : Instruction code
H : Read L : Write
Enable signal
Data bus line
H: Parallel mode L: Serial mode
No Connection
Reset signal, active "L"
No connection
Power supply for LED backlight
96 SEG
LED BACKLIGHT SPECIFICATIONS (Ta=25 C)
DB7
LEDA
LEDK
64 SEG
32 COM
ST7920
mm
mm
mm
mm
g
Max. Unit
V DD
0.6
V DD
0.4
5.0
--
3.0
6.5
Unit
Item
PIN CONNECTIONS
ELECTRICAL CHARACTERISTICS ( V DD =5V
Item
Nominal Dimensions
Module Size ( W x H x T ) 93.0 x 70.0 x 10.0/13.5
72.0 x 39.0
Viewing Area ( W x H )
Dot Pitch ( W x H )
0.52 x 0.52
0.48 x 0.48
Dot Size ( W x H )
Weight (Reflective/LED)
Approx. 55/75
Item
ST7921
LED B/L
Control Signals
Forward Voltage
Forward Current
Emission Wave Length
Symbol
Typ.
Max.
Unit
Vf
If
λp
4.1
300
568
4.3
---
V
mA
nm