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 • Dot Matrix Dimensions 3.55 2.96 0.56 0.04 Absolute Maximum Ratings (Continued) Item Symbol Rating Unit LED Forward Current IF 200 mA LED Reverse Voltage VR 8 V LED Power Dissipation PD 920 mW Operating Temperature Top 0 to +50 °C Storage Temperature Tstg –20 to +60 °C Electrical Characteristics (TA = 25°C) 5.94 5.56 0.66 0.04 Item LCD Operating Voltage Outline Dimensions Unit 85.0 (H) x 30.0 (V) x 8.8 (D) (12.7 LED) mm Character Size 2.96 (H) x 5.56 (V) mm Character Pitch 3.55 (H) x 5.94 (V) mm Viewing Area 65.0 (H) x 16.0 (V) Dot Size Dot Pitch Min. Typ. Max. Unit T=0 °C – 4.8 – VDD-VO T=25 °C – 4.5 – T=50 °C – 4.2 – V VDD-VSS – 4.7 5 5.3 V Supply Current IDD – – 3.2 6 mA Input Voltage “High” Level VIH – 2.2 – VDD “Low” Level VIL – 0 – 0.6 Output Voltage “High” Level VOH – 2.4 – – “Low” Level VOL – – – 0.4 Mechanical Characteristics Specification Cond. Supply Voltage SCALE 4/1 Item Symbol V V Optical Characteristics (TA = 25˚C, f = 0°, q = 0°) Symbol Min. Typ. Max. Unit Viewing Angle Item f – 50 – degree mm Contrast K – 6.0 – – 0.56 (H) x 0.66 (V) mm Turn On Ton – 200 400 ms 0.60 (H) x 0.70 (V) mm Turn Off Toff – 250 400 ms Absolute Maximum Ratings Item Rating Unit Supply Voltage VDD 7.0 V Input Voltage VIN 0 ≤ VIN ≤ VDD V 7/20/07 Symbol Purdy Electronics Corporation • 720 Palomar Avenue • Sunnyvale, CA 94085 Tel: 408.523.8200 • Fax: 408.733.1287 • [email protected] • www.ANDdisplays.com 1 AND481GST/GST-LED Intelligent Character Display Power Supply Connector Pin Assignment Pin No. Signal 1 VDD 5V 2 VSS 0V 3 VO Contrast Adj. 4 RS Register Select 5 R/W Read/Write Function 6 E 7 DB0 Data Bit 0 8 DB1 Data Bit 1 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 +25°C 4.75 +50°C 4.50 Enable Signal 9 DB2 Data Bit 2 10 DB3 Data Bit 3 11 DB4 Data Bit 4 12 DB5 Data Bit 5 13 DB6 Data Bit 6 14 DB7 Data Bit 7 Power Supply Block Diagram 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 • [email protected] • www.ANDdisplays.com 2