Purdy AND471GST-LED - Manual (Page 2)

Displays
Purdy Electronics Corporation • 755 North Pastoria Avenue • Sunnyvale, CA 94085-2918
Tel: 408-523-8200 • Fax: 408-733-1287 • [email protected] • www.purdyelectronics.com
4/2/12 2
Optical Characteristics (Ta = 25 ºC)
AND471GST-LED
Intelligent Character Display
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
VIH H Level 2.2 — VDD V
LCM Recommend LCD Module
Driving Voltage
VDD-VO
Ta = 0ºC — — —
V
Ta = 25ºC 4.2 4.5 4.8
Ta = 50ºC — — —
Power Supply Current for LCM IDD VDD = 5.0V, VDD-VO=4.5V — 2.0 3.0 mA
LED Forward Voltage VF IF=260 mA — 4.1 4.6 V
LED Forward Current IF — — 260 — mA
LED Reverse Current IR VR = 8V — — 0.2 mA
Interface Pin Assignment
Pin No. Symbol Level Description Pin No Symbol Level Description
1 VSS 0V Power Supply Ground 9 DB2 H/L Data Bit 2
2 VDD 5.0V Power Supply Voltage 10 DB3 H/L Data Bit 3
3 V0 — Contrast Adjustment 11 DB4 H/L Data Bit 4
4 RS H/L Register Select 12 DB5 H/L Data Bit 5
5 R/W H/L Read / Write 13 DB6 H/L Data Bit 6
6 E H, H —> L Enable Signal 14 DB7 H/L Data Bit 7
7 DB0 H/L Data Bit 0 15 A 4.1V LED Power Supply (+)
8 DB1 H/L Data Bit 1 16 K — LED Power Supply (-)
Item Symbol Remarks
Min.
Specifications
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 = 4.5 V
Ta = 25ºC
– 200 – mS
Fall Time Tf – 250 –
Frame Frequency Frm – 64 – Hz
Contrast Cr – 3.0 – –
Brightness of Backlight L
IF = 260 mA
120 180 – cd/m 2
Peak Emission Wavelength λ P 567 570 577 nm