Purdy Electronics Corporation 720 Palomar Avenue Sunnyvale, CA 94085
5/1/08
Tel: 408.523.8200 Fax: 408.733.1287 email@purdyelectronics.com
1
www.purdyelectronics.com
Displays
AND3222MST-LEDW
6” FSTN LCD Module
The AND3222MST-LEDW display is a compact, full dot matrix,
which is an STN gray positive LCD type, transflective rear
polarizer with a yellow green backlight color. The AND3222MST-
LEDW can display TEXT information, numerals, letters and
symbols, as well as GRAPHIC patterns. These devices are
suitable for medical and measurement equipment, point-of-sale
terminals, protable equipment, and marine instrumentation.
Features
STN Gray Positive LCD type
Built-in LED yellow green backlight
Excellent readability and high-contrast ratio
320 (W) x 240 (H) dot graphic display
Wide operating temperature range (-20 to +70 ºC)
Transflective rear polarizer
6 o’clock viewing angle
RoHS Compliant
Mechanical Characteristics
Item
Specification Unit
Outline
Dimensions
148.0 (W) x 120.2 (H) x 20.5 max (D) mm
Number of
Pixels
320 (W) x 240 (H) pixels
Active Area 120.14 (W) x 92.14 (H) mm
Pixel Size 0.33 (W) x 0.33 (H) mm
Pixel Pitch 0.36 (W) x 0.36 (H) mm
Duty Ratio 1/240 duty
Controller SID13305
DC/DC Converter With
Absolute Maximum Ratings - Electrical
Item
Symbol Min. Max. Unit
Power Supply for Logic
V
DD
- V
SS
-0.3 7.0 V
Power Supply for LCD Driver
V
DD
- V
LCD
0 30.0 V
Input Voltage
V
I
-0.3 V
DD
V
LED Power Dissipation
P
AD
1242
mW
LED Forward Current
I
AF
270
mA
LED Reverse Voltage
V
R
8V
Electrical Characteristics (Ta = 25°C)
Item
Symbol Condition Min. Typ. Max. Unit
Power
Supply for
Logic
V
DD -
V
SS
4.5 5.0 5.5 V
Power
Supply for
LCD Drive
V
LCD -
V
SS
-21.6 -22.1 -22.7 V
Input
Voltage
V
IL
L Level 0 0.6 V
V
IH
H Level 2.2
V
DD
V
V
DD -
V
O
Ta = 0ºC
22.7
V
Ta = 25ºC
24.3 V
Ta = 50ºC 25.8 V
Logic
Supply
Current
I
DD
V
DD
=5.0V
V
DD -
V
O
=
24.3V
34.9 31.3
mA
I
EE
3.6
LED
Forward
Voltage
V
F
If = 180 mA 4.2 4.6 V
LED
Forward
Current
I
F
180 mA
LED
Reverse
Current
I
R
VR = 8V 0.3 mA
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.
Purdy Electronics Corporation 720 Palomar Avenue Sunnyvale, CA 94085
2
Tel: 408.523.8200 Fax: 408.733.1287 email@purdyelectronics.com
5/1/08
www.purdyelectronics.com
Displays
Dimensional Outline
Unit: mm
Standard Tolerance: 0.5mm
AND3222MST-LEDW
Purdy Electronics Corporation 720 Palomar Avenue Sunnyvale, CA 94085
5/1/08
Tel: 408.523.8200 Fax: 408.733.1287 email@purdyelectronics.com
3
www.purdyelectronics.com
Displays
Environmental Absolute Maximum Ratings
Item
Normal Temperature Wide Temperature
Operating Storage Operating Storage
Min. Max. Min. Max. Min. Max. Min. Max.
Ambient Temperature 0 ºC +50 ºC -20 ºC +70 ºC -20 ºC +70 ºC -30 ºC +80 ºC
Humidity (without
condensation)
See Note 2, 4 See note 3, 5 See Note 4, 5 See Note 4.6
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%.
Note 4: Background color changes slightly depending on ambient temperature. This phenomenon is reversible.
Note 5: Ta ≤ 70ºC: 75% RH max; Ta > 70ºC: absolutely 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%.
Optical Characteristics
Item Symbol Condition Min. Typ. Max. Unit
Viewing angle range
φ
f (12 o’clock)
When Cr
1.4
–20
degree
φ
b (6 o’clock)
–40
φ
l (9 o’clock)
–30
φ
r (3 o’clock)
–30
Rise time Tr
V
DD
-V
O
=24.3V
Ta=25ºC
175 ms
Fall time Tf 170 ms
Frame frequency Frm 64 Hz
Contrast Cr 4.5
Brightness of Backlight L
IF = 180 mA
10 20
cd/m
2
Peak Emission
Wavelength
λ
P 567 570 576 nm
Interface Pin Assignment
Pin No.
Pin Out Level Description Pin No. Pin Out Level Description
1 VSS 0V Power Supply Ground 11 DB4 H/L Data Bus Line
2 VDD 5V Logic Supply Voltage 12 DB5 H/L Data Bus Line
3 VO Contrast Adjustment Voltage 13 DB6 H/L Data Bus Line
4 /RD L Read Signal 14 DB7 H/L Data Bus Line
5 /WR L Write Signal 15 /CS L Chip Signal
6 AO H/L Data Type Select 16 /RST L Reset Signal
7 DB0 H/L Data Bus Line 17
V
LCD
Power Supply Voltage for LCD
8 DB1 H/L Data Bus Line 18 FG For GND
9 DB2 H/L Data Bus Line 19 A 4.2V LED Power External (Red)
10 DB3 H/L Data Bus Line 20 K GND LED Ground External (White)
AND3222MST-LEDW
Purdy Electronics Corporation 720 Palomar Avenue Sunnyvale, CA 94085
4
Tel: 408.523.8200 Fax: 408.733.1287 email@purdyelectronics.com
5/1/08
www.purdyelectronics.com
Displays
Power Supply
Block Diagram
AND3222MST-LEDW
Purdy Electronics Corporation 720 Palomar Avenue Sunnyvale, CA 94085
5/1/08
Tel: 408.523.8200 Fax: 408.733.1287 email@purdyelectronics.com
5
www.purdyelectronics.com
Displays
Timing Characteristics
Item
Symbol Min. Typ. Max. Unit
System Cycle Time tCYC 425 ns
Address Set-up Time tAW 30 ns
Address Hold Time tAH 10 ns
Data Set-up Time tDS 120 ns
Data Hold Time tDH 10 ns
Output Disable Time tOH 10 50 ns
Access Time tACC 120 ns
Enable Pulse Width
Read
tEW
220 ns
Write 220 ns
AND3222MST-LEDW