BO LYMIN BG12232D Feature 1. COB with metal frame 2. No built-in oscillation, requiring external clock 3. Built-in controller SED1520Daa 4. 1/32 duty cycle 5. + 5V single power supply 6. Option: +3V single power supply 7. Option: LED, EL B/L Mechanical Data Item Standard Value Module Dimension 80.0 x 36.0 Viewing Area 60.0 x 18.0 Dot Size 0.4 x 0.45 Dot Pitch 0.44 x 0.49 Pin Assignment Pin Symbol 1 2 3 4 5 6 7 8 9 10~17 18 Vss Vdd Vo Ao /CS1 /CS2 CL RD/E WR,R/W DB0~7 RES 19 A/Vee 20 K Dimension Unit mm mm mm mm Function GND + 5V(+3V option) Contrast adjustment H --> Data L --> Instruction L --> Chip1 enable L --> Chip 2 enable External clock 2KHZ RD for 80 serial; /E for 68 serial WR for 80 serial; R/W for 68 serial Data bus line L: 80 series, H: 68 series Power supply for B/L (+)/ Negative voltage output Power supply for B/L (GND) Electronic Characteristics Symbol Condition Typical Unit Value Input Voltage Vdd Vdd = +5V 5.0 V Supply Current Idd Vdd = +5V 1.0 mA LCD Driving 4.5 Vdd-Vo V 25 oC Voltage LED Forward 4.2 Vf V 25 oC Voltage LED Forward If 120 mA 25 oC Current EL Power Vel Vel=110Vac/400Hz V Voltage Item