Purdy AND1264WGST-LED - Manual (Page 3)

Intelligent Character Display
AND1264
WGST-LED
Purdy Electronics Corporation • 720 Palomar Avenue • Sunnyvale, CA 94085
7/20/07 Tel: 408.523.8200 • Fax: 408.733.1287 • [email protected] • www.purdyelectronics.com 4
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
=8.3V
Ta = 25ºC
– 200 –
ms
Fall Time Tf – 250 –
Frame Frequency Frm – 64 – Hz
Contrast Cr – 4.5 –
The Brightness of Backlight L
If = 300 mA
140 180 – cd/m 2
Peak Emission Wavelength
λ
P 567 570 577 nm
Absolute Maximum Ratings - Electrical Absolute Ratings
Item Symbol Min. Max. Unit
Power Supply for Logic V
DD
-V
SS
-0.3 7.0 V
Power Supply for LCD V
DD
-V
EE
0 14.0 V
Input Voltage V
I
-0.3 V
DD
V
LED Power Dissipation P
AD
– 2070 mW
LED Forward Current I
AF
– 450 mA
LED Reverse Voltage V
R
– 8 V
Absolute Maximum Ratings - Environmental Absolute Maximum Ratings
Item
Normal Temperature Wide Temperature
Operating Storage Operating Storage
Min. Max. Min. Max. Min. Max. Min. Max.
Ambient Temperature 0ºC +50ºC -20ºC +70ºC -20ºC +70ºC -30ºC +80ºC
Humidity (without condensation) Note 2, 4 Note 3, 5 Note 4, 5 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: 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%