Displaytech Ltd
LCD MODULE
402A SERIES
Version : 1.1
P1 of 17
PRODUCT SPECIFICATIONS
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PHYSICAL DATA
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EXTERNAL DIMENSIONS
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BLOCK DIAGRAM
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ABSOLUTE MAXIMUM RATINGS
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ELECTRICAL CHARACTERISTICS
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OPERATING PRINCIPLES
&
METHODS
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DISPLAY DATA RAM ADDRESS MAP
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ELECTRO-OPTICAL CHARACTERISTICS
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INTERFACE PIN CONNECTIONS
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CIRCUIT DIAGRAM
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RELIABILITY
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QUALITY GUARANTEE
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INSPECTION CRITERIA
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PRECAUTIONS FOR USING LCD MODULES
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USING LCD MODULES
Displaytech Ltd
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PHYSICAL DATA
Item
LCD MODULE
402A SERIES
Version : 1.1
P2 of 17
Contents
TN / STN / FSTN
1/16
1/5
6 / 12
182
×
33.5
×
11.0 MAX (14.0 MAX W/LED BACKLIGHT)
154.5
×
15.8
40
×
2
5
×
8
3.20
×
5.55
0.60
×
0.65
0.65
×
0.70
LCD type
LCD duty
LCD bias
Viewing direction
Module size (W×H×T)
Viewing area (W×H)
Number of characters (characters×lines)
Character matrix (W×H)
Character size (W×H)
Dot size (W×H)
Dot pitch (W×H)
Unit
---
---
---
o’clock
mm
mm
---
dots
mm
mm
mm
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EXTERNAL DIMENSIONS
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BLOCK DIAGRAM
Displaytech Ltd
Parameter
Supply voltage for logic
Supply voltage for LCD
Input voltage
Normal operating temperature
Normal storage temperature
Wide operating / storage
temperature (except FSTN)
Wide operating / storage
temperature (FSTN)
LCD MODULE
402A SERIES
Version : 1.1
P3 of 17
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ABSOLUTE MAXIMUM RATINGS
( Ta = 25°C )
Symbol
VDD
VDD - VO
VI
TOP
TST
TOP / TST
TOP / TST
Min
-0.3
-0.3
-0.3
0
-10
-30
-30
Max
7.0
VDD+0.3
VDD+0.3
50
60
80
70
Unit
V
V
V
°C
°C
°C
°C
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ELECTRICAL CHARACTERISTICS
( VDD = +5V±10% , VSS = 0V, Ta = 25°C )
u
DC Characteristics
Parameter
Supply voltage for logic
Supply current for logic
Operating voltage for LCD
Input voltage ' H ' level
Input voltage ' L ' level
Symbol
VDD
IDD
VDD - VO
VIH
VIL
Condition
---
---
25°C
---
---
Min
4.5
---
4.5
VDD - 2.2
0
Typ
5.0
1.61
4.8
---
---
Max
5.5
5
5.1
VDD
0.8
Unit
V
mA
V
V
V
l
Backlight operating information (Ta = 25°C )
Supply voltage VF (V)
Min
Typ
Max
---
4.2
4.6
EL Enable voltage EON (VAC)
Min
Typ
Max
---
100
150
Supply current IF (mA)
Min
Typ
Max
---
500
840
EL frequency LF (Hz)
Min
Typ
Max
---
400
1000
LED Backlight
Light box Y/G (-2)
EL Backlight
EL (B)
u
AC Characteristics
l
Write mode
Characteristic
E cycle time
E rise time
E fall time
E pulse width (High, Low)
R/W and RS set-up time
R/W and RS hold time
Data set-up time
Data hold time
Symbol
t
C
t
r
t
f
t
W
t
SU1
t
h1
t
SU2
t
h2
Min.
500
---
---
220
40
10
60
10
Typ.
---
---
---
---
---
---
---
---
Max.
---
25
25
---
---
---
---
---
Unit
ns
ns
ns
ns
ns
ns
ns
ns
Test pin
E
E
E
E
R/W, RS
R/W, RS
DB
0
~ DB
7
DB
0
~ DB
7
Displaytech Ltd
LCD MODULE
402A SERIES
Version : 1.1
P4 of 17
l
Read mode
Characteristic
E cycle time
E rise time
E fall time
E pulse width
R/W and RS set-up time
R/W and RS hold time
Data output delay time
Data hold time
Symbol
t
C
t
r
t
f
t
W
t
SU
t
h
t
D
t
DH
Min.
500
---
---
220
40
10
---
20
Typ.
---
---
---
---
---
---
---
---
Max.
---
25
25
---
---
---
120
---
Unit
ns
ns
ns
ns
ns
ns
ns
ns
Test pin
E
E
E
E
R/W, RS
R/W, RS
DB
0
~ DB
7
DB
0
~ DB
7
l
Interface mode with ,KS0063B
Characteristic
Clock pulse width High
Clock pulse width Low
Data set-up time
Data hold time
Clock set-up time
M Delay time
Symbol
t
CWH
t
CWL
t
SU
t
DH
t
CSU
t
DM
Min.
800
800
300
300
500
-1000
Typ.
---
---
---
---
---
---
Max.
---
---
---
---
---
1000
Unit
ns
ns
ns
ns
ns
ns
Test pin
CLK
CLK
DB
0
~ DB
7
DB
0
~ DB
7
CLK
M
Displaytech Ltd
LCD MODULE
402A SERIES
Version : 1.1
P5 of 17
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OPERATING PRINCIPLES
&
METHODS
u
Control and Display Command
Command
RS
R/W
DB
7
DB
6
DB
5
DB
4
DB
3
DB
2
DB
1
DB
0
Execution
Time
(f
osc
=
250kHz)
Remark
DISPLAY
CLEAR
RETURN HOME
ENTRY MODE
SET
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
H
L
H
I/D
H
X
SH
1.64ms
1.64ms
42µs
Cursor move to first digit
•
I/D : Set cursor move direction
H Increase
I/D
L Decrease
•
SH : Specifies shift of display
H
SH
L
Display is not
shifted
Display is shifted
DISPLAY
ON/OFF
L
L
L
L
L
L
H
D
C
B
42µs
•
Display
H
D
L
•
Cursor
H
C
L
Display on
Display off
Cursor on
Cursor off
•
Blinking
H Blinking on
B
L Blinking off
SHIFT
L
L
L
L
L
H
S/C
R/L
X
X
42µs
S/C
L
H
R/L
L
SET FUNCTION
L
L
L
L
H
DL
N
F
X
X
42µs
DL
L
H
N
L
H
F
L
SET CG RAM
ADDRESS
SET DD RAM
ADDRESS
READ BUSY
FLAG &
ADDRESS
L
L
L
L
L
H
L
H
BF
H
CG RAM address
(corresponds to cursor address)
DD RAM address
Address Counter used for
both DD & CG RAM address
42µs
42µs
0µs
BF
L
Ready
−
Reads BF indication internal
operating is being performed
−
Reads address counter contents
Write data into DD or CG RAM
Read data from DD or CG RAM
5 X 7 dots
1 line display
5 X 10 dots
4 bits interface
2 line display
H
Left shift
8 bits interface
Cursor move
Right shift
H
Display shift
CG RAM Data is sent and
received after this setting
DD RAM Data is sent and
received after this setting
H
Busy
WRITE DATA
READ DATA
X : Don’t care
H
H
L
H
Write Data
Read Data
46µs
46µs
单片机
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