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| 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 * * * * * * * 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) Absolute Maximum Ratings Item Supply Voltage Input Voltage Operating Temperature Storage Temperature Symbol VDD VIN Top Tstg Rating 7.0 0 VIN VDD 0 to +50 -20 to +60 Unit V V C C Dot Matrix Dimensions 0.55 0.50 2.95 0.60 0.55 0.70 Electrical Characteristics (TA = 25C) Item Supply Voltage Symbol VDD-VO GND VIH VIL Min. 4.75 3.0 2.2 - Typ. 5.0 0 - - Max. 5.25 6.3 - 0.6 Unit V V V 4.35 High Level In Voltage (VDD = 5.0V) Low Level In Voltage (IOH = 0.2 mA) 0.70 High Level Output Volt. (-IOH = 0.2 mA) Low Level Output Volt. (IOL = 1.2 mA) LED Forward Voltage (IF = 150 mA) LED Reverse Current (VR = 4 V) VOH 2.4 - - V Mechanical Characteristics Item Outline Dimensions Character size Viewing Area Bezel Opening Dot Size Dot Pitch Specification 80 (W) x 36 (H) x 11 (D) 2.95 (W) x 4.35 (H) 64.5 (W) x 13.8 (H) 64.5 (W) x 13.8 (H) 0.55 (W) x 0.50 (H) 0.60 (W) x 0.55 (H) Unit mm mm mm mm mm mm VOL VF IR - 3.8 - - 4.1 - 0.4 4.4 100 V V A Optical Characteristics (TA 5 = 25C, = 0, = 0) Item Viewing Angle Contrast Turn On Turn Off Symbol K Ton Toff Min. - - - - Typ. 50 6.0 200 250 Max. - - 400 400 Unit degree - ms ms 2-10 Purdy Electronics Corporation * 720 Palomar Avenue * Sunnyvale, CA 94086 Tel: 408.523.8200 * Fax: 408.733.1287 * email@purdyelectronics.com * www.purdyelectronics.com 9/8/98 AND491GST/GST-LED Intelligent Character Display Connector Pin Assignment Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Signal GND VDD VO RS R/W E DBO DB1 DB2 DB3 DB4 DB5 DB6 DB7 GND VDD - VO = LCD Drive Voltage VR10 to 20 k VDD (+5V) Power Supply Function 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 0C +25C +50C Power Supply Block Diagram VDD-VO Ground +5 Power Supply LCD Drive Voltage "H" Data Input "L" Command Input Read/Write Enable 5.00 4.75 4.50 Data Bus DB0-DB7 are for 8-bit operation DB4-DB7 are for 4-bit operation VDD - VO VO VR VDD Block Diagram E R/W RS DB0-DB7 VDD VO GND 8 Controller/ Driver 40 1 16 LCD 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@purdyelectronics.com * www.purdyelectronics.com 2-11 |
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