AND491GST/GST-LED 2 lines x 16 Characters Intelligent Character Display The AND491GST/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 AND491GST: Super Twist Technology AND491GST-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) Item Symbol Rating Unit Supply Voltage VDD 7.0 V Input Voltage VIN 0 ≤ VIN ≤ VDD V Operating Temperature Top 0 to +50 °C Storage Temperature Tstg –20 to +60 ˚C 0.55 0.50 Dot Matrix Dimensions 2.95 0.60 0.55 Electrical Characteristics (TA = 25°C) 0.70 Item Symbol Min. Typ. Max. VDD-VO 4.75 5.0 5.25 GND 3.0 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 = 150 mA) VF 3.8 4.1 4.4 V LED Reverse Current (VR = 4 V) IR – – 100 µA 0.70 4.35 Supply Voltage Mechanical Characteristics Item Specification Unit 80 (W) x 36 (H) x 11 (D) mm Character size 2.95 (W) x 4.35 (H) mm Viewing Area 64.5 (W) x 13.8 (H) mm Bezel Opening 64.5 (W) x 13.8 (H) mm Dot Size 0.55 (W) x 0.50 (H) mm Dot Pitch 0.60 (W) x 0.55 (H) mm Outline Dimensions 2-10 Unit V Optical Characteristics (TA 5 = 25˚C, φ = 0°, θ = 0°) Item Symbol Min. Typ. Max. Unit Viewing Angle φ – 50 – degree Contrast K – 6.0 – – Turn On Ton – 200 400 ms Turn Off Toff – 250 400 ms Purdy Electronics Corporation • 720 Palomar Avenue • Sunnyvale, CA 94086 Tel: 408.523.8200 • Fax: 408.733.1287 • [email protected] • www.purdyelectronics.com 9/8/98 AND491GST/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 VDD–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 9/8/98 Purdy Electronics Corporation • 720 Palomar Avenue • Sunnyvale, CA 94086 Tel: 408.523.8200 • Fax: 408.733.1287 • [email protected] • www.purdyelectronics.com 2-11