Contents
AN.No.G1216B1N000-3D0E
USER’S Manual
Copyright 1993 by Seiko Instruments Inc
Contents
General
Symbol Conditions Min Typ Max Unit Input High
+80 Temperature Storage
Power supply voltage
Voltage
25 C Vopr=13.0 Viewing angle
Min Typ Max Unit Remark
∅ = 25 C Vopr=13.0 Contrast
25 C Vopr=13.0
−20 To +70 Storage temp. range
AN.No.G1216B1N000-3D0E Definition of response time
Number of LED
Leda
Chips=20
Ledc
DB1
DB0
DB2
DB3
V c, V d, V f
Circuit Configuration
CS2 CS1
FRM
CS R/W
LSB
MSB
Busy
Page
COM2
COM1
COM3
COM4
Operational Amplifier Bias R2= 9 4 R1= 5 R1
CS1 CS2
Operating Instructions
MPU
140
450
To DB7
Test point RL = 2.4 k = 11 k
Rise time 200
Reset time
D/I
Function
Detailed explanation Display ON/OFF Code
DB7 DB0
AN.No.G1216B1N000-3D0E Display start line Code
Display start line=0 Display start line=1
Display start line =2 Display start line=3
AN.No.G1216B1N000-3D0E Address page set Code
Display Data RAM Address Configuration
Reset
=10 k Ω
Voltage V opr 13.5 13.0 12.5 11.5 10.5
=1.2 k Ω
Variable resistor
=LED forward voltage
=Input voltage power voltageV
=Allowable LED forward current a
Leda Ledc
Z80 PIO
MPU Connection Diagram
D0 to D7 A0 to A7 DB0 to DB7 A0 to A15 Decoder
Iorq RST CS1
Precautions
11, 12, 17
9, 11, 12, 17, 18, 19
LC drive voltage
10, 16, 17
Seiko Instruments Inc