AND771GST/GST-LED 2 Lines x 24 Characters Intelligent Character Display The AND771GST/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. Features • • • • • • • Absolute Maximum Ratings (Cont) Item AND771GST: Super Twist Technology AND771GST-LED: STN with LED backlight Low voltage, +5V single power supply Controller on board (HD44780) Direct interface to 4- or 8-bit CPU 11 commands for control Wide temperature range option (WGST) Dot Matrix Dimensions 3.20 0.60 0.05 Unit LED Forward Current 280 mA LED Reverse Voltage VR 4 V LED Power Dissipation PD 1150 mW Operating Temperature Top 0 to +50 °C Storage Temperature Tstg –20 to +60 °C Item Symbol 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 – – Low Level In Voltage (IOH = 0.2 mA) VIL 0 – 0.6 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 = 160 mA) VF 3.8 4.1 4.4 V LED Reverse Current (VR = 4 V) IR – – 100 µA 0.40 5.55 0.65 0.05 Supply Voltage Specification Unit 118 (W) x 36 (H) x 11 (D) mm Character Size 3.20 (W) x 5.55 (H) mm Viewing Area 93.5 (W) x 15.8 (H) mm Bezel Opening 93.5 (W) x 15.8 (H) mm Dot Size 0.60 (W) x 0.60 (H) mm Dot Pitch 0.65 (W) x 0.65 (H) mm Outline Dimensions Rating IF Electrical Characteristics (TA = 25°C) 0.50 Mechanical Characteristics Item Symbol Absolute Maximum Ratings Unit V V Optical Characteristics (TA = 25˚C, φ= 0°, θ = 0°) Item Symbol Min. Typ. Max. Unit Viewing Angle φ – 50 – degree Contrast K – 6.0 – – Symbol Rating Unit Turn On Ton – 200 400 ms Supply Voltage VDD 7.0 V Turn Off Toff – 250 400 ms Input Voltage VIN 0 ≤ VIN ≤ VDD V Item 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 7/23/07 2 Purdy Electronics Corporation • 720 Palomar Avenue • Sunnyvale, CA 94085 Tel: 408.523.8200 • Fax: 408.733.1287 • [email protected] • www.purdyelectronics.com 7/23/07 AND771GST/GST-LED Intelligent Character Display Power Supply Connector Pin Assignment Pin No. Signal 1 GND Ground 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 Function LCD panel is driven by the voltage VDD –VO, so adjustable VO is required 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 10 DB3 11 DB4 12 DB5 13 DB6 14 DB7 15 NC No Connection 16 NC No Connection (+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 2 40 40 Driver Driver Dimensional Outline 3 Purdy Electronics Corporation • 720 Palomar Avenue • Sunnyvale, CA 94085 Tel: 408.523.8200 • Fax: 408.733.1287 • [email protected] • www.purdyelectronics.com 7/23/07