Purdy AND671WGST-LED - Manual (Page 2)

Displays
Purdy Electronics Corporation • 720 Palomar Avenue • Sunnyvale, CA 94085
Tel: 408-523-8200 • Fax: 408-733-1287 • [email protected] • www.purdyelectronics.com
6/20/11 2
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 = 3.3 V
Ta = 25ºC
– 200 – mS
Fall Time Tf – 250 –
Frame Frequency Frm – 64 – Hz
Contrast Cr – 3.0 – –
Brightness of Backlight L
IF = 20 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 Wide Temperature
Operating Storage
Min. Max. Min. Max.
Ambient Temperature -20 ºC +70 ºC -30 ºC +80ºC
Humidity (without condensation) Note 4, 5 Note 4,6
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%.
AND671WGST-LED
Intelligent Character Display
Electrical Characteristics
Item Symbol Condition Min. Typ. Max. Unit
Power Supply for Logic VDD - VSS – 2.7 3.3 4.5 V
Input Voltage VIL L Level 0 –- 0.6 V
VIH H Level 2.2 — VDD V
LCM Recommend LCD Module
Driving Voltage VDD-VO
Ta = 0ºC — — — V
Ta=25ºC 2.7 3.3 4.5
Ta=50ºC — — —
Power Supply Current for LCM IDD VDD = 3.3V, VDD-V0=3.3V — 2.0 3.0 mA
LED Forward Voltage VF iF = 20 mA — 3.4 3.6 V
LED Frward Current IF — — 20 — mA
LED Reverse Voltage IR VR=5V — — 0.2 mA