Seiko Instruments G1216B1N000 user manual Cs R/W, Frm

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AN.No.G1216B1N000-3D0E

2.2.1Block Diagram (Segment Driver)

CS R/W	D/I	E DB0 to DB7
RST VDD VSS VLC

Figure 3 Segment Driver

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Image 11

Contents AN.No.G1216B1N000-3D0E USER’S ManualCopyright 1993 by Seiko Instruments Inc Contents General Voltage +80 Temperature StorageSymbol Conditions Min Typ Max Unit Input High Power supply voltage25 C Vopr=13.0 Min Typ Max Unit Remark25 C Vopr=13.0 Viewing angle ∅ = 25 C Vopr=13.0 Contrast−20 To +70 Storage temp. range AN.No.G1216B1N000-3D0E Definition of response timeLedc LedaNumber of LED Chips=20DB3 DB0DB1 DB2V c, V d, V f Circuit ConfigurationCS2 CS1 FRM CS R/WLSB MSBBusy Page COM4 COM1COM2 COM3Operational Amplifier Bias R2= 9 4 R1= 5 R1 CS1 CS2 Operating InstructionsMPU Test point RL = 2.4 k = 11 k 450140 To DB7Rise time 200 Reset timeD/I FunctionDetailed explanation Display ON/OFF Code Display start line =2 Display start line=3 AN.No.G1216B1N000-3D0E Display start line CodeDB7 DB0 Display start line=0 Display start line=1AN.No.G1216B1N000-3D0E Address page set Code Display Data RAM Address ConfigurationReset Variable resistor Voltage V opr 13.5 13.0 12.5 11.5 10.5=10 k Ω =1.2 k ΩLeda Ledc =Input voltage power voltageV=LED forward voltage =Allowable LED forward current aIorq RST CS1 MPU Connection DiagramZ80 PIO D0 to D7 A0 to A7 DB0 to DB7 A0 to A15 DecoderPrecautions 11, 12, 17 9, 11, 12, 17, 18, 19LC drive voltage 10, 16, 17Seiko Instruments Inc