Displays AND501WGST/WGST-LED 20 Characters x 2 Lines Intelligent Alphanumeric Displays The AND501WGST/WGST-LED devices are compact, LCD modules that have an on-board LCD controller and driver circuit and wide operating temperature STN fluid. These devices can display 160 characters (numerals, letters, symbols and Kana letters). Features • • • • • • • RoHS Compliant AND501WGST: Wide Temp. Super Twist Technology AND501WGST-LED: WTSTN with LED backlight Low voltage, +5V power supply Controller on board (HD44780) RoHS compliant 11 commands for control Absolute Maximum Ratings (Continued) Item Symbol Rating Unit Operating Temperature Top -20 to +70 °C Storage Temperature Tstg –30 to +80 °C Electrical Characteristics (TA — 25°C) Dot Matrix Dimensions Item Symbol Min. Typ. Max. VDD 4.75 5.0 5.25 GND — 0 — High Level In Voltage (VDD = 5.0V) VIH 2.2 — — V Low Level In Voltage (IOH = 0.2 mA) VIL 0 — 0.6 V High Level Output Volt. (–IOH = 0.2 mA) VOH 2.4 — — V Low Level Output Volt. (IOL = 1.2 mA) VOL — — 0.6 V LED Forward Voltage (IF = 200 mA) VF 3.8 4.1 4.4 V LED Reverse Current (VR = 8 V) IR — — 2.2 mA Supply Voltage Mechanical Characteristics Item Specification Unit 116 (W) x 37 (H) x 11 (D) mm Character Size 3.2 (W) x 5.55 (H) mm Viewing Area 83.0 (W) x 18.6 (H) mm Dot Size 0.60 (W) x 0.65 (H) mm Viewing Angle Dot Pitch 0.65 (W) x 0.70 (H) mm Outline Dimensions Absolute Maximum Ratings Item Unit V Optical Characteristics (TA = 25˚C, φ= 0˚C, θ = 0) Item Symbol Min. Typ. Max. Unit φ –10 25 40 degree Contrast K — 3.0 — — Turn On Ton — 200 400 ms Turn Off Toff — 250 400 ms Symbol Rating Unit Supply Voltage VDD 7.0 V Input Voltage VIN 0 ≤ VIN ≤ VDD V Pin No. Signal GND Ground Connector Pin Assignment Function LED Forward Current IF 275 mA 1 LED Reverse Voltage VR 8 V 2 VDD +5 Power Supply LED Power Dissipation PD 1270 mW 3 VO LCD Drive Voltage 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. 7/20/07 Purdy Electronics Corporation • 720 Palomar Avenue • Sunnyvale, CA 94085 Tel: 408.523.8200 • Fax: 408.733.1287 • [email protected] • www.ANDdisplays.com 1 Displays AND501WGST/WGST-LED Intelligent Alphanumeric Displays Power Supply Connector Pin Assignment (Continued) Pin No. Signal Function 4 RS “H” Data Input “L” Command Input 5 R/W Read/Write The LCD panel is driven by the voltage VDD–VO, so adjustable VO is required for contrast control and temperature compensation. Temperature Variations 6 E Temperature V DD –V EE 7 DBO Enable -20°C 6.20 8 DB1 +25°C 5.60 9 DB2 +70°C 5.20 10 DB3 11 DB4 12 DB5 13 DB6 14 DB7 Data Bus DB0-DB7 are for 8-bit operation DB4-DB7 are for 4-bit operation Power Supply Block Diagram (+5V) VDD VDD – VO VO VR VDD GND VDD – VO = LCD Drive Voltage VR10 to 20 kΩ Block Diagram E 8 R/W RS DB0-DB7 8 Controller/ Driver 8 16 LCD VDD VO GND 40 40 20 Dimensional Outline 7/20/07 Purdy Electronics Corporation • 720 Palomar Avenue • Sunnyvale, CA 94085 Tel: 408.523.8200 • Fax: 408.733.1287 • [email protected] • www.ANDdisplays.com 2