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AND481GST/GST-LED 2 Lines x 16 Characters Intelligent Character Display The AND481GST/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 * * * * * * RoHS Compliant 5 x 7 Dots with cursor Built-in controller (HD44780U or equivalent) 5V Power supply 1/16 Duty cycle 4.2V LED Forward voltage Absolute Maximum Ratings (Continued) Item LED Forward Current LED Reverse Voltage LED Power Dissipation Symbol IF VR PD Top Tstg Rating 200 8 920 0 to +50 -20 to +60 Unit mA V mW C C * Dot Matrix Dimensions 3.55 2.96 0.56 0.04 Operating Temperature Storage Temperature Electrical Characteristics (TA = 25C) Item Symbol Cond. T=0 C Min. Typ. Max. Unit - - - 4.7 - 2.2 0 2.4 - 4.8 4.5 4.2 5 3.2 - - - - - - - 5.3 6 VDD 0.6 - 0.4 V mA V V 5.94 5.56 0.66 0.04 LCD Operating Voltage Supply Voltage Supply Current VDD-VO T=25 C T=50 C VDD-VSS IDD VIH VIL VOH VOL - - - - - - SCALE 4/1 Input Voltage Mechanical Characteristics Item Outline Dimensions Character Size Character Pitch Viewing Area Dot Size Dot Pitch Specification 85.0 (H) x 30.0 (V) x 8.8 (D) (12.7 LED) 2.96 (H) x 5.56 (V) 3.55 (H) x 5.94 (V) 65.0 (H) x 16.0 (V) 0.56 (H) x 0.66 (V) 0.60 (H) x 0.70 (V) Unit mm mm mm mm mm mm Output Voltage "High" Level "Low" Level "High" Level "Low" Level V Optical Characteristics (TA = 25C, f = 0, q = 0) Item Viewing Angle Contrast Turn On Turn Off Symbol f K Ton Toff Min. - - - - Typ. 50 6.0 200 250 Max. - - 400 400 Unit degree - ms ms Absolute Maximum Ratings Item Supply Voltage Input Voltage Symbol VDD VIN Rating 7.0 0 VIN VDD Unit V V 7/20/07 Purdy Electronics Corporation * 720 Palomar Avenue * Sunnyvale, CA 94085 Tel: 408.523.8200 * Fax: 408.733.1287 * sales@purdyelectronics.com * www.ANDdisplays.com 1 AND481GST/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 VDD VSS VO RS R/W E DB0 DB1 DB2 DB3 DB4 DB5 DB6 DB7 5V 0V Contrast Adj. Register Select Read/Write Enable Signal Data Bit 0 Data Bit 1 Data Bit 2 Data Bit 3 Data Bit 4 Data Bit 5 Data Bit 6 Data Bit 7 Function Power Supply 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 5.00 4.75 4.50 Block Diagram DB7-DB0 E R/W RS VO VDD VSS LCD CONTROLLER LSI HD4478OU or Equivalent COM 16 LCD PANEL SEG 40 SEG 40 CONTROL SIGNAL 4 LCD SEGMENT DRIVER X 1 Dimensional Outline 7/20/07 Purdy Electronics Corporation * 720 Palomar Avenue * Sunnyvale, CA 94085 Tel: 408.523.8200 * Fax: 408.733.1287 * sales@purdyelectronics.com * www.ANDdisplays.com 2 |
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