Displays
Purdy Electronics Corporation • 720 Palomar Avenue • Sunnyvale, CA 94085
Tel: 408-523-8200 • Fax: 408-733-1287 • sales@purdyelectronics.com •
www.purdyelectronics.com
09/26/10
1
AND1781BST-LED
Intelligent Graphic Display
Intelligent Graphic Display
The AND1781BST-LED is an STN Blue Negative Black & White liquid crystal
display. It has a transmissive rear polarizer, white LED backlight, 6 o-clock
viewing angle and a normal temperature range.
Features
• STN Blue Negative Black & White
• Transmissive Rear Polarizer
• White LED Backlight
• 6 O’clock Viewing Direction
• Normal Temperature Range
• Black Frame
• ROHS Compliant
Electrical Absolute Maximum Ratings
Item
Symbol
Min.
Max.
Unit
Remark
Power Supply for Logic
VDD - VSS
-0.3
5.5
V
Power Supply for LCD
VDD-VSS
0
24.0
V
Input Voltage
V1
-0.3
VDD
V
LED Power Dissipation
PAD
–
360
mW
LED Frward Current
IAF
–
100
mA
LED Reverse Voltage
VR
5
V
Product specifications contained herein may be changed without prior notice.
It is therefore advisable to contact Purdy Electronics before proceeding with the design of equipment incorporating this product.
Mechanical Characteristics
Item
Standard Value
Unit
Module Size
180.0 (W) x 65.0 (H) x 9.7 (D) (max.)
mm
Viewing Area
134.0 (W) x 40.4 (H)
mm
Dot Size
0.49 (W) x 0.49 (H)
mm
Dot Pitch
0.53 (W) x 0.53 (H)
mm
Resolution
240 (W) x 64 (H)
dots
Duty Ratio
1/64 Duty
–
Controller
T6963C/Toshiba
–
Displays
Purdy Electronics Corporation • 720 Palomar Avenue • Sunnyvale, CA 94085
Tel: 408-523-8200 • Fax: 408-733-1287 • sales@purdyelectronics.com •
www.purdyelectronics.com
09/26/10
2
Electrical Characteristics
Item
Symbol
Condition
Min.
Typ.
Max.
Unit
Power Supply for Logic
VDD-VSS
–
4.5
5.0
5.5
V
Input Voltage
VIL
L Level
0
–
0.6
V
VH
H Level
2.2
–
VDD
V
VDD-VO
Ta = -0ºC
–
–
–
V
Ta = 25ºC
10.8
12.2
13.1
V
Ta = 50ºC
–
–
–
V
Power Supply Current for LCM
IDD
VDD=5.0V
VDD-VEE=12.2V
–
16.0
25.0
mA
IEE
–
2.4
–
LED Forward Voltage
VF
If=80 mA
–
3.4
3.6
V
LED Forward Current
IF
–
–
80
–
mA
LED Reverse Current
IR
VR=5V
–
–
0.3
mA
Optical Specifi cations
(Ta = 25 ºC)
Item
Symbol
Remarks
Min.
Specifi cations
Typ.
Max.
Units
Viewing Angle
Φ
f (12 o’clock)
When CR ≥ 1.4
–
20
–
deg
Φ
b (6 o’clock)
–
40
–
Φ
l (9 o’clock)
–
30
–
Φ
r (3 o’clock)
–
30
–
Rise Time
Tr
VDD-VO = 12.2 V
Ta = 25ºC
–
230
–
mS
Fall Time
Tf
–
250
–
Frame Frequency
Frm
–
64
–
Hz
Congrast
Cr
–
5.0
–
–
Brightness of Backlight
L
IF = 80 mA
120
180
–
cd/m
2
Peak Emission Wavelength
λ
P
x = 0.29
y = 0.30
x = 0.31
y = 0.32
x = 0.33
y = 0.34
nm
Environmental Absolute Maximum Ratings
Item
Normal Temperature
Operating
Storage
Min.
Max.
Min.
Max.
Ambient Temperature
0 ºC
+50 ºC
-20 ºC
+70ºC
Humidity (without condensation)
Note 2, 4
Note 3,5
Note 2: Ta ≤ 50ºC: 80% RH max; Ta > 50ºC: Absolute humidity must be lower than the humidity of 85% RH at 50ºC.
Note 3: Ta at -20ºC will be < 48 hrs at 70ºC will be <120 hrs when humidity is higher than 75%.
AND1781BST-LED
Intelligent Graphic Display
Displays
Purdy Electronics Corporation • 720 Palomar Avenue • Sunnyvale, CA 94085
Tel: 408-523-8200 • Fax: 408-733-1287 • sales@purdyelectronics.com •
www.purdyelectronics.com
09/26/10
3
Interface Pin Assignment
Pin No.
Pin Out
Function Description
Pin No
Pin Out
Function Description
1
FGND
For Ground
11
DB0
Data Bit 0
2
VSS
Power Supply Ground
12
DB1
Data Bit 1
3
VDD
Power Supply Voltage
13
DB2
Data Bit 2
4
VO
Contrast Adjustment Voltage
14
DB3
Data Bit 3
5
/WR
Data Write
15
DB4
Data Bit 4
6
/RD
Data Read
16
DB5
Data Bit 5
7
/CE
Enable Signal
17
DB6
Data Bit 6
8
C/D
Wr = “l”, C/D = “H”: Command Write; WR = “L”, C/D = “L:”:
Data Write; RD = “L”, C/D = “H”: Status Read; RD = “L”,
C/D = “L”: Data Read
18
DB7
Data Bit 7
9
NC
No Connection
19
FS
H: 6*8/L: 8*8 Select of font
10
/RST
Reset Signal
20
NC
No Connection
Block Diagram
AND1781BST-LED
Intelligent Graphic Display
Power Supply
Displays
Purdy Electronics Corporation • 720 Palomar Avenue • Sunnyvale, CA 94085
Tel: 408-523-8200 • Fax: 408-733-1287 • sales@purdyelectronics.com •
www.purdyelectronics.com
09/26/10
4
Mechanical Dimensions
AND1781BST-LED
Intelligent Graphic Display