PACIFIC DISPLAY DEVICES
LCD Component Data Sheet
Model Number: 20215
20 Character by 2 Line
Alphanumeric LCD Assembly
With COG Controller
No internal backlight assembly, must be external
CONTENTS
1.
GENERAL INFORMATION
1.1 Product Overview
1.2 Part Numbering System
1.3 Absolute Maximum Ratings
1.4 Circuit Block Diagram
1.5 Mechanical Characteristics
1.6 Input Signal Function
1.7 LCM Contrast Control and Bias
1.8 LCD Dimensions
ELECTRICAL / OPTICAL CHARACTERISTICS
2.1 DC Electrical Characteristics
2.2 AC Electrical Characteristics
2.3 Optical Characteristics
OPERATING PRINCIPALS AND METHODS
3.1 LCD Controller Display and Control Functions
RELIABILITY
PRECAUTIONS FOR USING LCD MODULES
2
2
3
3
3
4
4
5
2.
6
6
8
3.
9
10
11
4.
5.
139 Avenida Victoria – Suite 100 – San Clemente, CA – 92672
Tel: 949-361-8957 – Fax: 949-361-9158 – Web: www.pacificdisplay.com
SPECIFICATIONS FOR LIQUID CRYSTAL DISPLAY MODULE
MODEL NO: 20215
1. GENERAL INFORMATION
1.1 Product Overview
•
20 Character x 2 line Alphanumeric Dot Matrix LCD Module
•
3.3V and 5V Operation
•
LCD Controller: Chip on Glass (COG) NT7605 or equivalent alpha-numeric controller
•
4 Bit and 8 Bit parallel data interface options
•
Multiplexing driving: 1/16 duty, 1/4 bias
•
Operating Mode: TN (Twisted Nematic) or Super Twisted Nematic (STN) technology
•
LCD Module Service Life: 100,000 hours minimum
1.2 Part Numbering System
20215
Custom Option Designator
•
(Leave Blank)
Operating Mode
•
(-GR) STN Green
•
(-SL) STN Silver
•
(-BN) STN Blue Negative
•
(-TN) TN
Rear Polarizer Options:
•
(-R) Reflective
•
(-F) Transflective
•
(-M) Transmissive
Operating Temperature
•
(-ST) Standard (0 to +50 ºC)
•
(-ET) Extended (-20 to +70 ºC)
Viewing Angle
•
(-6) 6 o’clock
•
(-12) 12 0’clock
-SL
-R
-ST
-12
PACIFIC DISPLAY DEVICES
09.14.2003
2
SPECIFICATIONS FOR LIQUID CRYSTAL DISPLAY MODULE
MODEL NO: 20215
1.3 Absolute Maximum Ratings
Parameter
Supply voltage for logic
Supply voltage for LCD
Input voltage
Standard Operating temperature
Standard Storage temperature
Extended Operating temperature
Extended Storage temperature
Soldering Temp
Symbol
V
DD
V
DD
– V0
VI
TOP (-ST)
TST (-ST)
TOP (-ET)
TST (-ET)
Tsolder
Min
-0.3
--
-0.3
0
-10
-20
-30
Max
7.0
V
DD
+0.3
V
DD
+0.3
50
60
70
80
260
Unit
V
V
V
ºC
ºC
ºC
ºC
ºC
1.4 Circuit Block Diagram
DB0
~
DB7
RS
R/W
E
VSS
VDD
VO
SEG 100
CONTROLLER
IC
NT7605
COM16
LCD PANEL
20 CHARACTERS x 2 LINES
1.5 Mechanical Characteristics
Item
Module size (W×H×T)
Viewing area (W×H)
Character matrix (W×H)
Character size (W×H)
Dot size (W×H)
Dot pitch (W×H)
Contents
76 x 26.50 x 2.85 Max
72.0
×
15.0
5
×
8
2.95
×
5.15
0.55
×
0.58
0.60
×
0.63
Unit
mm
mm
dots
mm
mm
mm
PACIFIC DISPLAY DEVICES
09.14.2003
3
SPECIFICATIONS FOR LIQUID CRYSTAL DISPLAY MODULE
MODEL NO: 20215
1.6 Input Signal Function
Pin NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Symbol
VSS
VO
VDD
RS
R/W
E
DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
Level
0V
---
3.3V - 5.0V
H/L
H/L
H, H
→
L
H/L
H/L
H/L
H/L
H/L
H/L
H/L
H/L
Description
Ground
Bias voltage for LCD (Contrast)
Supply voltage for logic
H : Data signal, L : Instruction signal
H : Read mode, L : Write mode
Chip enable signal
Data bit 0
Data bit 1
Data bit 2
Data bit 3
Data bit 4
Data bit 5
Data bit 6
Data bit 7
1.7 LCM Contrast Control and Bias
PACIFIC DISPLAY DEVICES
09.14.2003
4
SPECIFICATIONS FOR LIQUID CRYSTAL DISPLAY MODULE
MODEL NO: 20215
1.8 LCM Dimensions
PACIFIC DISPLAY DEVICES
09.14.2003
5
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