BO LYMIN BG128128A Feature 1. SMT PCB with metal frame 2. Built-in controller LC7981 3. 1/128 duty cycle 4. +5V single power supply 5. Option: LED, EL B/L 6. Option: negative voltage Mechanical Data Item Standard Value Module Dimension 72.4 x 70.0 Viewing Area 49.0 x 49.0 Dot Size 0.32 x 0.32 Dot Pitch 0.35 x 0.35 Pin Assignment Pin Symbol 1~8 9 10 11 12 13 14 15 16 17~18 19 20 DB0-7 RS R/W E /CS /RST Vo Vdd Vss NC A NC Unit mm mm mm mm Electronic Characteristics Function Data bus line Data/Instruction select Data read/write Enable signal Chip select Reset signal Contrast adjustment Power supply(+5V) Power supply(GND) No connection Power supply for B/L + Power supply for B/L - Symbol Condition Typical Unit Value Input Voltage Vdd Vdd = +5V 5.0 V Supply Current Idd Vdd = +5V 5.0 mA LCD Driving 17.6 V Vdd-Vo 25 oC Voltage LED Forward 4.2 Vf V 25 oC Voltage LED Forward If 320 mA 25 oC Current Item Dimension 3.6 65.2²0.3 2.5 49.0²0.2 20- Ø1.0 44 77 1.6 59.5²0.3 44.77 49.0²0.2 65.0²0.3 A DETAIL A 67.4²0.3 72.4²0.5 5.25 12. 10 70.0²0.5 4- Ø 2.5 10.0[led] 5.0[[el/ref]f] 15.0[led] 10.0[[el/ref]f]