Displays
AND491GST3-3V-W-LED
Intelligent Character Display
AND491GST3-3V-W-LED
Intelligent Character Display
The AND491GST3-3V-W-LED is an STN Positive Graye liquid crystal
display. It has a transflective rear polarizer, white LED backlight, 6 o-clock
viewing angle and a wide temperature range with a 3.3V single supply volt-
age.
Features
• STN Positive Gray
• Transflective Rear Polarizer
• White LED Backlight
• 6 O’clock Viewing Direction
• Wide Temperature Range, 3.3V, Single Supply Voltage
• Silver Frame
•
ROHS Compliant
Mechanical Characteristics
Item
Module Size
Viewing Area
Dot Size
Dot Pitch
Display Format
Duty Ratio
Controller
Standard Value
80.0 (W) x 36.0 (H) x 8.8.0 (12.7) (D) (max.)
65.0 (W) x 16.0 (H)
0.56 (W) x 0.56 (H)
0.60 (W) x 0.70 (H)
16 characters (W) x 2 lines (H)
1/16 Duty
ST7066U or equivalent
Unit
mm
mm
mm
mm
–
–
–
Electrical Absolute Maximum Ratings
Item
Power Supply for Logic
Input Voltage
LCM Recommend LCD Module
driving Voltage
Power Supply Current for LCM
LED Forward Voltage
LED Frward Current
LED Reverse Voltage
Symbol
VDD - VSS
VIL
VIH
VDD-VO
IDD
VF
IF
IR
Condition
–
L Level
H Level
Ta = 0ºC
Ta=25ºC
Ta=50ºC
VDD = 3.3V, VDD-V0=3.3V
iF = 20 mA
—
VR=5V
Min.
2.7
0
2.2
—
2.7
—
—
—
—
—
Typ.
3.3
–-
—
—
3.3
—
2.0
3.4
20
—
Max.
4.5
0.6
VDD
—
4.5
—
3.0
3.6
—
0.2
mA
V
mA
mA
Unit
V
V
V
V
I
Product specifications contained herein may be changed without prior notice.
1
Purdy Electronics Corporation
• 720 Palomar Avenue • Sunnyvale, CA 94085
Tel: 408-523-8200 • Fax: 408-733-1287 • sales@purdyelectronics.com •
www.purdyelectronics.com
04/24/12
Displays
Electrical Characteristics
Item
Power Supply for Logic
Symbol
VDD-VSS
VIL
Input Voltage
VH
VDD-VO
Bias - 1/12
LED Forward Voltage
LED Forward Current
LED Reverse Current
VF
IF
IR
Condition
–
L Level
H Level
Ta = -20ºC
Ta = 25ºC
Ta = 70ºC
If=160 mA
–
VR=5V
Min.
2.97
0
2.2
–
15.8
–
–
–
–
AND491GST3-3V-W-LED
Intelligent Character Display
Typ.
3.30
–
–
–
16.3
–
3.4
160
–
Max.
3.63
0.6
VDD
–
16.8
–
3.6
–
0.3
Unit
V
V
V
V
V
V
V
mA
mA
Optical Specifications
(Ta = 25 ºC)
Item
Symbol
Φ
f (12 o’clock)
Viewing Angle
Rise Time
Fall Time
Frame Frequency
Contrast
Brightness of Backlight
Peak Emission Wavelength
Φ
b (6 o’clock)
Φ
l (9 o’clock)
Φ
r (3 o’clock)
Tr
Tf
Frm
Cr
L
λ
P
IF = 20 mA
VDD-VO = 3.3 V
Ta = 25ºC
When CR ≥ 1.4
Remarks
Min.
–
–
–
–
–
–
–
–
120
x = 0.29
y = 0.30
Specifications
Typ.
20
40
30
30
200
250
64
3.0
180
x = 0.31
y = 0.32
Max.
–
–
–
–
–
–
–
–
–
x = 0.33
y = 0.34
Units
deg
mS
Hz
–
cd/m
2
nm
Environmental Absolute Maximum Ratings
Item
Operating
Min.
Ambient Temperature
Humidity (without condensation)
-20 ºC
Note 4, 5
Max.
+70 ºC
Min.
-30 ºC
Note 4,6
Wide Temperature
Storage
Max.
+80ºC
Note 4: Background color changes slightly depending on ambient temperature. This phenomenon is reversible.
Note 5: Ta ≤ 70ºC: 75 RH max; Ta > 70ºC: absolute humidity must be lower than the humidity of 75% RH at 70ºC.
Note 6: Ta at -30ºC will be <48 hrs, at 80ºC will be < 120 hrs when humidity is higher than 75%.
2
Purdy Electronics Corporation
• 720 Palomar Avenue • Sunnyvale, CA 94085
Tel: 408-523-8200 • Fax: 408-733-1287 • sales@purdyelectronics.com •
www.purdyelectronics.com
04/24/12
Displays
Interface Pin Assignment
Pin No.
1
2
3
4
5
6
7
8
Pin Out
VSS
VDD
V0
RS
R/W
E
DB0
DB1
Level
0V
3.3V
—
H/L
H/L
H, H —>L
H/L
H/L
Function Description
Power Supply Ground
Power Supply Voltage
Contrast Adjustment
Register Select
Read/ Write
Enable Signal
Data Bit 0
Data Bit 1
Pin No Pin Out
9
10
11
12
13
14
15
16
DB2
DB3
DB4
DB5
DB6
DB7
A
K
AND491GST3-3V-W-LED
Intelligent Character Display
Level
H/L
H/L
H/L
H/L
H/L
H/L
3.5V
0V
Function Description
Data Bit 2
Data Bit 3
Data Bit 4
Data Bit 5
Data Bit 6
Data Bit 7
LED Power Supply (+)
LED Power Supply (-)
Block Diagram
Power Supply
3
Purdy Electronics Corporation
• 720 Palomar Avenue • Sunnyvale, CA 94085
Tel: 408-523-8200 • Fax: 408-733-1287 • sales@purdyelectronics.com •
www.purdyelectronics.com
04/24/12
Displays
Mechanical Dimensions
AND491GST3-3V-W-LED
Intelligent Character Display
4
Purdy Electronics Corporation
• 720 Palomar Avenue • Sunnyvale, CA 94085
Tel: 408-523-8200 • Fax: 408-733-1287 • sales@purdyelectronics.com •
www.purdyelectronics.com
04/24/12
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