AND731GST/GST-LED 4 Lines x 16 Characters Intelligent Character Display The AND731GST/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 AND731GST: Super Twist Technology AND731GST-LED: STN with LED backlight Low voltage, +5V single power supply Built-inController 5 x 7 Dots with cursor 1/16 Duty cycle 4.2V LED forward voltage Mechanical Characteristics Item Specification Electrical Characteristics (TA = 25°C) Item LCD Operating T = 25°C Voltage T = 50°C mm Character Size 2.95 (W) x 4.75 (H) mm Viewing Area 62 (W) x 25.6 (H) mm Character Pitch 3.55 (W) x 5.35 (H) mm Dot Size 0.55 (W) x 0.55 (H) mm Dot Pitch 0.60 (W) x 0.60 (H) mm – – 4.5 – – 4.2 – Unit V 5 5.3 V Supply Current IDD – 3.2 6 mA Hi Level VIH 2.2 – – V Low Level VIL 0 – VDD V Hi Level VOH 2.4 – 0.6 V Low Level VOL – – 0.4 V Outpit Voltage Optical Characteristics (TA = 25˚C, φ = 0°, θ = 0°) Item Symbol Min. Typ. Max. Unit φ – 50 – degree Contrast K – 6.0 – – Ton – 200 400 ms Toff – 250 400 ms Symbol Rating Unit Turn On LED Forward Current IF 400 mA Turn Off LED Reverse Voltage VR 4 V 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 Item Max. 4.8 4.7 Viewing Angle Absolute Maximum Ratings Typ. – VDD -VSS Unit 87 (W) x 60 (H) x 8.8 (D) (12.7 LED) VDD -VO Min. Supply Voltage Input Voltage Outline Dimensions Symbol T = 0°C 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 7/20/07 AND731GST/GST-LED Intelligent Character Display Connector Pin Assignment (Continued) Connector Pin Assignment Pin No. Signal 1 VSS 2 VDD 3 Function Pin No. Signal Ground 13 DB6 Data Bit 6 +5 Power Supply 14 DB7 Data Bit 7 VO LCD Drive Voltage 15 A LED Power K LED Power RS “H” Data Input “L” Command Input 16 4 5 R/W Read/Write 6 E 7 DBO Data Bit 0 8 DB1 Data Bit 1 9 DB2 Data Bit 2 0°C 5.00 10 DB3 Data Bit 3 +25°C 4.75 +50°C 4.50 Enable 11 DB4 Data Bit 4 12 DB5 Data Bit 5 Function Power Supply The LCD panel is driven by the voltage VDD –VO, so you need an adjustable VO for contrast and temperature control. Temperature Variations Temperature V DD –VO Block Diagram 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.purdyelectronics.com 2