AND791GST

AND791GST/GST-LED 4 Lines x 40 Characters Intelligent Character Display The AND791GST/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 • • • • • • • AND791GST: Super Twist Technology AND791GST-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 (Continued) Item LED Power Dissipation Operating Temperature Storage Temperature Symbol PD Top Tstg Rating 4160 0 to +50 –20 to +70 Unit mW °C °C Dot Matrix Dimensions 2.78 0.75 Electrical Characteristics (TA = 25°C) Item Supply Voltage Symbol VD D VD D -VO VIH 1 VIL 1 VO H 1 VOL 1 VF IR Min. 4.75 3.0 2.2 0 2.4 — 3.8 – Typ. 5.00 – — — — — 4.1 – Max. 5.25 6.3 VD D 0.6 — 0.4 4.4 4.8 Unit V V V V V V mA 4.89 High Level In Voltage Low Level In Voltage (IO H = 0.2 mA) 1.20 High Level Output Volt. (–IO H = 0.2 mA) Low Level Output Volt. (IOL = 1.2 mA) Specification 190.0 (W) x 54.0 (H) x 10 (D) 2.78 (W) x 4.89 (H) 147.0 (W) x 29.5 (H) 0.50 x 0.55 0.57 x 0.62 Unit mm mm mm mm mm LED Forward Voltage (IF = 480 mA) LED Reverse Current (VR = 8 V) Mechanical Characteristics Item Outline Dimensions Character Size Viewing Area Dot Size Dot Pitch Absolute Maximum Ratings Item Supply Voltage Input Voltage LED Forward Current LED Reverse Voltage Symbol VD D VIN IF VR Rating 7.0 0 ≤ VIN ≤ VD D 960 8 Unit V V mA V Optical Characteristics (TA = 25˚C, φ = 0°, θ = 0°) Item Viewing Angle Contrast Response time (rise) Response time (fall) Symbol φ K Ton Toff Min. – – — — Typ. 50 6.0 140 160 Max. – – 170 190 Unit degree – ms ms 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. 4/2/05 1 Purdy Electronics Corporation • 720 Palomar Avenue • Sunnyvale, CA 94085 Tel: 408.523.8200 • Fax: 408.733.1287 • email@purdyelectronics.com • www.purdyelectronics.com AND791GST/GST-LED Intelligent Character Display Connector Pin Assignment Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Signal DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 E1 R/W RS VO GND VD D E2 NC Enable (for upper 2 lines) L: Data write from MPU to LCM. H: Data read from LCM to MPU L: Instruction code input. H: Data input Liquid crystal driving voltage Ground Power supply voltage + 5V Enable (for lower 2 lines) No Connect GND VDD – VO = LCD Drive Voltage VR10 to 20 kΩ VO VDD VDD – VO VR VDD (+5V) Power Supply Function LCD panel is driven by the voltage VDD –VO, so an adjustable VO is required for contrast control and temperature compensation. Temperature Variations Data bus line DB0-DB7 are for 8-bit operation DB4-DB7 are for 4-bit operation Temperature 0°C +25°C +50°C Power Supply Block Diagram VD D –VO 5.00 4.75 4.50 Dimensional Outline 4/2/05 Purdy Electronics Corporation • 720 Palomar Avenue • Sunnyvale, CA 94085 Tel: 408.523.8200 • Fax: 408.733.1287 • email@purdyelectronics.com • www.purdyelectronics.com 2 AND791GST/GST-LED Intelligent Character Display 3 Purdy Electronics Corporation • 720 Palomar Avenue • Sunnyvale, CA 94085 Tel: 408.523.8200 • Fax: 408.733.1287 • email@purdyelectronics.com • www.purdyelectronics.com 4/2/05