AND471GST/GST-LED 2 Lines x 16 Characters Intelligent Character Display The AND471GST/GST-LED devices are compact, LCD modules that have an on-board LCD controller and driver circuit. These devices can display 160 characters (numerals, letters, symbols and Kana letters), as well as eight custom characters. The large characters provide excellen readability. Features • • • • • • • RoHS Compliant AND471GST: Super Twist Technology AND471GST-LED: STN with LED backlight Low voltage, +5V single power supply Controller on board (HD44780) RoHS compliant Wide temperature range option (WGST) Dot Matrix Dimensions 4.84 0.92 0.05 Absolute Maximum Ratings (Continued) Item Symbol Rating Unit LED Reverse Voltage VR 8 V LED Power Dissipation PD 2000 mW Operating Temperature Top 0 to +50 °C Storage Temperature Tstg –20 to +60 ˚C 0.50 Electrical Characteristics (TA = 25°C) 9.66 1.10 0.05 Item 0.40 Specification Unit 122 (W) x 44 (H) x 11 (D) mm Character size 4.84 (W) x 9.66 (H) mm Viewing Area 99.0 (W) x 24.0 (H) mm Dot Size 0.92 (W) x 1.10 (H) mm Dot Pitch 0.98 (W) x 1.16 (H) mm Outline Dimensions Min. Typ. Max. VDD 4.75 5.0 5.25 VDD -VO 3.0 – 6.3 High Level In Voltage (VDD = 5.0V) VIH 2.2 – – V Low Level In Voltage (IOH = 0.2 mA) VIL – – 0.6 V High Level Output Volt. (–IOH = 0.2 mA) VOH 2.4 – – V Low Level Output Volt. (IOL = 1.2 mA) VOL – – 0.4 V LED Forward Voltage (IF = 220) VF 3.8 4.1 4.4 V LED Reverse Current (VR = 8 V) IR – – 2.4 mA Supply Voltage Mechanical Characteristics Item Symbol Item Symbol Min. Typ. Max. Unit φ – 50 – degree Contrast K – 6.0 – – Turn On Ton – 200 400 ms Turn Off Toff – 250 400 ms Viewing Angle Symbol Rating Unit Supply Voltage VDD 7.0 V Input Voltage VIN 0 ≤ VIN ≤ VDD V LED Forward Current IF 480 mA V Optical Characteristics (TA 5 = 25˚C, φ = 0°, θ = 0°) Item Absolute Maximum Ratings Unit 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. 1 Purdy Electronics Corporation • 720 Palomar Avenue • Sunnyvale, CA 94085 Tel: 408.523.8200 • Fax: 408.733.1287 •[email protected] • www.purdyelectronics.com 7/20/07 AND471GST/GST-LED Intelligent Character Display Power Supply Connector Pin Assignment Pin No. Signal 1 GND Ground Function 2 VDD +5 Power Supply 3 VO LCD Drive Voltage 4 RS “H” Data Input “L” Command Input 5 R/W 6 E 7 DBO 8 DB1 9 DB2 10 DB3 11 DB4 12 DB5 13 DB6 14 DB7 The LCD panel is driven by the voltage VDD–VO , so you need an adjustable VO for contrast control and temperature compensation. Temperature Variations Temperature V DD –VO 0°C 5.00 Read/Write +25°C 4.75 Enable +50°C 4.50 Power Supply Block Diagram (+5V) VDD Data Bus DB0-DB7 are for 8-bit operation DB4-DB7 are for 4-bit operation VDD – VO VO VR VDD GND VDD – VO = LCD Drive Voltage VR10 to 20 kΩ Block Diagram E 16 R/W RS DB0-DB7 VDD VO GND 8 LCD Controller/ Driver 40 1 40 Driver 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.purdyelectronics.com 2