LC128646-NRNGS3V [ETC]
LCD Module Specification; 液晶显示模块规格
| 型号： | LC128646-NRNGS3V |
| 厂家： | 
ETC |
| 描述： | LCD Module Specification |
| 文件： | 总20页 (文件大小：143K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LCD Module Specification
Model: LG128642-BMDWH6V
Table of Contents
● COVER & CONTENTS ······················· 1
● BASIC SPECIFICATIONS ····················· 2
● ABSOLUTE MAXIMUM RATINGS ················· 3
● ELECTRICAL CHARACTERISTICS ··············· 4
● OPERATING PRINCIPLES & METHODES ··········· 7
● DISPLAY CONTROL INSTRUCTIONS ············· 10
● DISPLAY DATA RAM ADDRESS MAP ············· 13
● CONNECTION WITH 8051 FAMILY MPU ············ 14
● ELECTRO—OPTICAL CHARACTERISTICS ·········· 15
● DIMENSIONAL OUTLINE ····················· 17
● LCD MODULE NUMBERING SYSTEM ············· 18
● PRECAUTIONS FOR USE OF LCD MODULE ········· 19
LG128642-BMDWH6V
- 2 -
1. BASIC SPECIFICATIONS
1.1 Features
Display Format
LCD Mode
: 128 X 64 Dots
: STN－Blue－Negative－Transmissive
: 1/64 Duty, 1/9 Bias
Driving Method
Viewing Direction : 6:00
Backlight
: LED, white color
Outline Dimension : 75.0(W) X 52.7(H) X 11.5(T)
mm
mm
mm
mm
g
Viewing Area
Dot Size
: 60.0(W) X 32.6(H)
: 0.40 X 0.40
Dot Pitch
Weight
: 0.43 X 0.43
: 45
Controller
: S6B0108 (KS0108B)
1.2 Block Diagram
64 COM
LCD PANEL
128 x 64 dots
S6B0107
or Eqv.
64 SEG
64 SEG
VDD
VSS
VO
To LSI
Power
Circuit
S6B0108
or Eqv.
S6B0108
or Eqv.
VOUT
DB7
DB0
RS, R/W, E, /RST
/CS1
/CS2
LEDA
LEDK
LED Backlight
LG128642-BMDWH6V
Function
- 3 -
1.3 Terminal Functions
Pin No.
Symbol
Level
+5V
0V
-
Power supply for logic
Ground
1
2
VDD
VSS
VO
Operating voltage for LCD (contrast adjusting)
3
Data bit0
4
DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
/CS1
/CS2
/RST
H/L
H/L
H/L
H/L
H/L
H/L
H/L
H/L
L
Data bit1
5
Data bit2
6
Data bit3
7
Data bit4
8
Data bit5
9
Data bit6
10
11
12
13
14
Data bit7
Chip selection for IC1, active “L”
Chip selection for IC2, active “L”
Reset signal, active “L”
L
L
Read/Write selection
15
16
17
R/W
RS
E
H/L
H/L
H: Read operation L: Write operation
Register selection
H: Display data
L: Instruction code
Enable signal. Read data when E is “H”, write
H, H→L
data at the falling edge of E
Output voltage for LCD driving
Power supply for LED backlight
Power supply for LED backlight
18
19
20
VOUT
LEDA
LEDK
-10V
+5V
0V
2. ABSOLUTE MAXIMUM RATINGS
Item
Symbol
Min.
-0.3
-0.3
-0.3
-20
Max.
7.0
Unit
V
VDD-VSS
VDD-VO
VI
Supply Voltage(Logic)
Supply Voltage(LCD)
Input Voltage
19.0
V
VDD+0.3
70
V
℃
℃
Topr
Operating Temp.
Storage Temp.
Tstg
-30
80
LG128642-BMDWH6V
- 4 -
3. ELECTRICAL CHARACTERISTICS
3.1 DC Characteristics
(VDD=5.0V±10%, Ta=25℃)
Item
Symbol
VDD
Condition
Min.
4.5
Typ.
5.0
Max.
5.5
Unit
V
Supply Voltage
(Logic)
Supply Voltage
(LCD Driving)
VDD-VO
--
11.2
--
V
Input High Voltage
Input Low Voltage
Output High Voltage
Output Low Voltage
VIH
VIL
2.0
0
--
--
--
--
VDD
0.8
V
V
V
V
VOH
VOL
IOH=-0.2mA
IOL=1.6mA
2.4
0
VDD
0.4
Supply Current
(Logic)
IDD
VDD=5.0V
--
6.0
8.0
mA
3.2 Interface Timing Chart
Characteristic
(VDD=5.0V±10%, Ta=25℃)
Symbol
tC
Min.
Typ.
--
Max.
--
Unit
ns
1000
E Cycle
tWH
tWL
tR
450
450
--
--
--
--
--
--
--
--
--
--
--
--
--
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
E High Level Width
E Low Level Width
E Rise Time
25
25
--
tF
--
E Fall Time
tASU
tAH
140
10
200
--
Address Set-Up Time
Address Hold Time
Data Set-Up Time
Data Delay Time
Data Hold Time(Write)
Data Hold Time(Read)
--
tDSU
tD
--
320
--
tDHW
tDHR
10
10
--
LG128642-BMDWH6V
- 5 -
tC
WL
t
E
tR
tWH
tF
tAH
tASU
R/W
tASU
tAH
/CS1, /CS2
RS
tDSU
tDSU
DB0~DB7
Fig.1 MPU Write Timing
tC
tWL
E
tR
tWH
tF
R/W
tASU
tASU
tAH
tAH
/CS1, /CS2
RS
tDHR
tD
DB0~DB7
Fig.2 MPU Read Timing
LG128642-BMDWH6V
- 6 -
3.3 LED Backlight Characteristics (Ta=25℃)
Item
Symbol
Condition
Vf=3.1V
Min.
2.9
--
Typ.
3.1
45
Max.
3.3
--
Unit
V
Forward Voltage
Forward Current
Color
Vf
If
mA
White
3.4 Power Supply
VDD
+5V
VSS
VR
20 k W
VO
VOUT
LEDA
+5V
LEDK
Note: 5V voltage for the LED backlight should be supplied to Pin19 (LEDA) and Pin20
(LEDK) terminal of the interface, it should not be supplied to the Anode/Cathode terminal
of the LED backlight directly.
LG128642-BMDWH6V
- 7 -
4. OPERATING PRINCIPLES & METHODES
4.1 I/O Buffer
Input buffer controls the status between the enable and display of chip. Unless the IC
(selected by /CS1, /CS2) is in active mode, input or output of data and instruction does
not execute. Therefore internal state is maintained. But /RST can operate regardless the
level of /CS1 or /CS2.
4.2 Register
Both input register and output register are provided to interface to MPU of which the
speed is different from that of internal operation. The selections of these registers depend
on the combination of R/W and RS signals.
RS
L
R/W
L
Function
Instruction
H
Status read (busy check)
L
Data write (from input register to display data RAM)
Data read (from display data RAM to output register)
H
H
4.2.1 Input Register
Input register stores the data temporarily before writing it into display data RAM.
When the IC is in active mode, R/W and RS select the input register. The data from MPU
is written into input register, then into display data RAM. Data is latched at falling edge of
the E signal and then written into the display data RAM automatically by internal
operation.
4.2.2 Output Register
Output register stores the data temporarily which is read from display data RAM when the
IC is in active mode and R/W and RS=H, stored data in display data RAM is latched in
output register. When the IC is in active mode and R/W=H, RS=L, status data (busy
check) can be read out.
To read the contents of display data RAM, twice access of read instruction is needed. In
first access, data in display data RAM is latched into output register. In second access,
MPU can read data that is latched in output register. That is, to read the data in display
data RAM, it needs dummy read. But status read does not need dummy read.
The following shows the MPU read timing.
LG128642-BMDWH6V
- 8 -
RS
R/W
E
Address
N
N+1
N+2
Output
Register
Data at address N
Data at address N+1
Busy
Write
Busy Read data Busy
Read data Busy
Read data
DB0~DB7
check address N check (dumy)
check address N check address N+1
MPU Read Timing
4.3 Reset
The system can be initialized by setting /RST terminal at low level when turning power on.
When /RST becomes low, following procedure is occurred.
1. Display off
2. Display start line register is set by 0. (Z-address 0)
While /RST is low level, no instruction except status read can be accepted. Reset status
appears at DB4 of status byte, after DB4 becomes “L”, any instruction can be accepted.
The conditions of power supply at initial power up are shown below.
Item
Symbol
tRS
Min.
1.0
--
Typ.
--
Max.
--
Unit
μs
Reset time
Rise time
tR
--
200
ns
4.5V
tRS
tR
VDD
0.7VDD
0.3VDD
/RST
4.4 Busy Flag
Busy flag indicates the system is now internally operating or not. When busy flag is “H”,
the system is in internal operation. When busy flag is “L”, the system can accept data or
instruction. Busy flag is read out on DB7 by the Status Read instruction.
LG128642-BMDWH6V
- 9 -
4.5 Display On/Off Flip-Flop
The display on/off flip-flop makes on/off the liquid crystal display. When flip-flop is reset
(logical low), selective voltage or non selective voltage appears on segment output
terminals. When flip-flop is set (logical high), non selective voltage appears on segment
output terminals regardless of display RAM data.
The display on/off flip-flop can change status by instruction. The display data at all
segments disappear while /RST is low. The status of the flip-flop is output on DB5 by
Status Read instruction.
4.6 X Page Register
X page register designates page of the internal display data RAM. Count function is not
available. An address is set by instruction.
4.7 Y Address Counter
Y address counter designates address of the internal display data RAM. An address is set
by instruction and is increased by 1 automatically by read or write operations of display
data.
4.8 Display Data RAM
Display data RAM stores a display data for liquid crystal display. 1 bit data of this RAM
corresponds to light ON (data=1) or light OFF (data=0) of 1 dot on the display panel.
4.9 Display Start Line Register
The register specifies a line in display data RAM that corresponds to the top line of LCD
panel, when displaying contents in display data RAM on the LCD panel. Bit data
(DB<0:5>) of the display start line information is written into this register by display start
line set instruction. It is used for scrolling of the liquid crystal display screen.
LG128642-BMDWH6V
- 10 -
5. DISPLAY CONTROL INSTRUCTIONS
The display control instructions control the internal state of the KS0108B. Instruction is
received from MPU to KS0108B for the display control. The following table shows various
instructions.
Instruction
Display
RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
Function
0
0
0
0
1
1
1
1
1
0/1 Controls the display on or off.
Internal status and display RAM data
are not affected.
ON/OFF
Set Address
(Y address)
Set Page
0
0
0
0
0
0
0
1
1
1
0
1
Y address (0-63)
Sets the Y address at the Y address
counter.
1
1
1
Page
(0-7)
Sets the X address at the X address
register.
(X address)
Display Start
Line
Display start line
(0-63)
Indicates the display data RAM
displayed at the top of the screen.
(Z address)
Status Read
0
1
B
U
S
Y
0
O
N
/
R
E
S
E
T
0
0
0
0
Reads status.
BUSY 0: Ready
1: In internal operation
O
F
F
ON/OFF 0: Display ON
1: Display OFF
RESET 0: Normal
1: Reset
Write Display
Data
1
1
0
1
Display Data
Display Data
Writes data (DB0~DB7) into display
data RAM. After writing instruction, Y
address is increased by 1
automatically.
Read Display
Data
Reads data (DB0~DB7) from display
data RAM to the data bus.
LG128642-BMDWH6V
- 11 -
5.1 Display On/Off
RS
0
R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0
0
0
1
1
1
1
1
D
The display data appears when D is 1 and disappears when D is 0.
Though the data is not on the screen with D=0, it remains in the display data RAM.
Therefore, you can make it appear by changing D=0 into D=1.
5.2 Set Address (Y Address)
RS
0
R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
AC5 AC4 AC3 AC2 AC1 AC0
0
0
1
Y address (AC0~AC5) of the display data RAM is set in the Y address counter.
An address is set by instruction and increased by 1 automatically by read or write
operations of display data.
5.3Set Page (X Address)
RS
0
R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
AC2 AC1 AC0
0
1
0
1
1
1
X address (AC0-AC2) of the display data RAM is set in the X address register.
Writing or reading to or from MPU is executed in this specified page until the next page is
set.
5.4 Display Start Line (Z Address)
RS
0
R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
AC5 AC4 AC3 AC2 AC1 AC0
0
1
1
Z address (AC0~AC5) of the display data RAM is set in the display start line register and
displayed at the top of the screen.
LG128642-BMDWH6V
- 12 -
5.5 Status Read
RS
0
R/W
1
DB7
DB6
0
DB5
DB4
DB3 DB2 DB1 DB0
BUSY
ON/OFF RESET
0
0
0
0
•
BUSY
When BUSY is 1, the chip is executing internal operation and no instructions are
accepted.
When BUSY is 0, the chip is ready to accept any instructions.
•
•
ON/OFF
When ON/OFF is 1, the display is off.
When ON/OFF is 0, the display is on.
RESET
When RESET is 1, the system is being initialized.
In this condition, no instructions except status read can be accepted.
When RESET is 0, initializing has finished and the system is in the normal operation
condition.
5.6 Write Display Data
RS
1
R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
D7 D6 D5 D4 D3 D2 D1 D0
0
Write data (D0~D7) into the display data RAM.
After writing instruction, Y address is increased by 1 automatically.
5.7 Read Display Data
RS
1
R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
D7 D6 D5 D4 D3 D2 D1 D0
1
Read data (D0~D7) from the display data RAM.
After reading instruction, Y address is increased by 1 automatically.
One time of dummy read must be required after column address setting.
LG128642-BMDWH6V
- 13 -
6. DISPLAY DATA RAM ADDRESS MAP
Page
Address
Display
Data
D0
D1
D2
D3
D4
D5
D6
D7
D0
D1
D2
D3
D4
D5
D6
D7
D0
D1
D2
D3
D4
D5
D6
D7
D0
D1
D2
D3
D4
D5
D6
D7
D0
D1
D2
D3
D4
D5
D6
D7
D0
D1
D2
D3
D4
D5
D6
D7
D0
D1
D2
D3
D4
D5
D6
D7
D0
D1
D2
D3
D4
D5
D6
D7
1st KS0108B
2nd KS0108B
Line Address
Common
C0
C1
C2
C3
C4
C5
C6
C7
C8
C9
CA
CB
CC
CD
CE
CF
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
DA
DB
DC
DD
DE
DF
E0
E1
E2
E3
E4
E5
E6
E7
E8
E9
EA
EB
EC
ED
EE
EF
F0
F1
F2
F3
F4
F5
F6
F7
F8
F9
FA
FB
FC
FD
FE
FF
COM1
COM2
COM3
COM4
COM5
COM6
COM7
COM8
COM9
B8
B9
BA
BB
BC
BD
BE
BF
COM10
COM11
COM12
COM13
COM14
COM15
COM16
COM17
COM18
COM19
COM20
COM21
COM22
COM23
COM24
COM25
COM26
COM27
COM28
COM29
COM30
COM31
COM32
COM33
COM34
COM35
COM36
COM37
COM38
COM39
COM40
COM41
COM42
COM43
COM44
COM45
COM46
COM47
COM48
COM49
COM50
COM51
COM52
COM53
COM54
COM55
COM56
COM57
COM58
COM59
COM60
COM61
COM62
COM63
COM64
Column
Address
40 41 42 -- 7D 7E 7F 40 41 42 -- 7D 7E 7F
Segment
--
--
LG128642-BMDWH6V
- 14 -
7. CONNECTION WITH 8051 FAMILY MPU
8051
LG128642
8
P0.0~P0.7
DB0~DB7
A0
RS
8
A1
A2
A3
R/W
/CS1
/CS2
74LS373
Y0
3
P2.5~P2.7
74LS138
E
/RD
/WR
RST
/RST
a. Application Circuit 1
8051
LG128642
DB0~DB7
8
P1.0~P1.7
P3.0
P3.1
P3.2
P3.3
P3.4
RS
R/W
E
/CS1
/CS2
RST
/RST
b. Application Circuit 2
LG128642-BMDWH6V
- 15 -
8. ELECTRO—OPTICAL CHARACTERISTICS (Ta=25℃)
Item
Symbol
Condition
Min. Typ. Max. Unit
Note
Φ2-Φ1 K³ 2 , q=0°
View Angle
Contrast
--
3
70
--
--
--
--
--
Deg
--
Note1, Note2
Note3
Φ=0°,q=0°
Φ=0°,q=0°
Φ=0°,q=0°
K
tr (rise)
tf (fall)
--
--
250
250
ms
ms
Response Time
Note3
Note1: Definition of Viewing Angle θ,Φ
Top
f
Z(
)
)
=0°
Y(
, f
=180° =-90°
q
X'
X
Bottom
Y'(
, f
q
)
=0°
=+90°
Note2: Definition of viewing Angle Range: Φ1,Φ2
K
2.0
f 1
f 2
Viewing Angle
LG128642-BMDWH6V
- 16 -
Note3: Definition of Contrast
K
B1
Brightness
B2
Driving Voltage
Brightness of non-selected dot (B1)
Brightness of selected dot (B2)
Contrast=
Note4: Definition of Response Time
Non-selective
state
Non-selective
state
Selective state
Time
tr
tf
LG128642-BMDWH6V
- 17 -
9. DIMENSIONAL OUTLINE
LG128642-BMDWH6V
- 18 -
10. LCD MODULE NUMBERING SYSTEM
L G 128 64 2 ― B M D W H 6 V ― XXX
(1) (2)
(3)
(4) (5)
(6) (7) (8) (9) (10) (11) (12)
(13)
(1) Brand
(2) Module type
C - Character module
G - Graphic module
(3) Display format
Character module : Number of characters per line, two digits XX
Graphic module : Number of columns, tow or three digits XX or XXX
(4) Display format
Character module : Number of lines, one digit X
Graphic module : Number of rows, two or three digits XX or XXX
(5) Development number : One digit X ( 1~9, A~Z )
(6) LCD mode
T - TN Positive, Gray
N - TN Negative, Blue
G - STN Positive, Gray
F - FSTN Positive, White
L - FSTN Negative, Blue
S - STN Positive, Yellow-green
B - STN Negative, Blue
K - FSTN Negative, Black
(7) Polarizer mode
R - Reflective
F - Transflective
M - Transmissive
(8) Backlight type
N - Without backlight
L - Array LED
D - Edge light LED E - EL
C - CCFL
(9) Backlight color
Y - Yellow-green
A - Amber
B - Blue
R - Red
W - White
G - Green
M - Multi color Nil –Without backlight
(10) Operating temperature range
S - Standard temperature ( 0 ~ +50 oC )
(11) Viewing direction
H - Extended Temperature ( -20 ~ +70 oC )
3 - 3:00
(12) DC-DC Converter
N or Nil – Without DC-DC converter
(13) Version code
0~ZZZ – Version code
6 – 6:00
9 – 9:00
U – 12:00
V – Built in DC-DC converter
LG128642-BMDWH6V
- 19 -
11. PRECAUTIONS FOR USE OF LCD MODULE
11.1 Handing Precautions
1) The display panel is made of glass. Do not subject it to a mechanical shock by
dropping it from a high place, etc.
2) If the display panel is damaged and the liquid crystal substance inside it leaks out,
be sure not to get any in your mouth. If the substance comes into contact with your
skin or clothes, promptly wash it off using soap and water.
3) Do not apply excessive force on the surface of display or the adjoining areas of
LCD module since this may cause the color tone to vary.
4) The polarizer covering the display surface of the LCD module is soft and easily
scratched. Handle this polarizer carefully.
5) If the display surface of LCD module becomes contaminated, blow on the
surface and gently wipe it with a soft dry cloth. If it is heavily contaminated, moisten
cloth with one of the following solvents.
· Isopropyl alcohol
· Ethyl alcohol
Solvents other than those mentioned above may damage the polarizer.
Especially, do not use the following:
· Water
· Ketone
· Aromatic Solvents
6) When mounting the LCD module make sure that it is free of twisting, warping, and
distortion. Distortion has great influence upon display quality. Also keep the
stiffness enough regarding the outer case.
7) Be sure to avoid any solvent such as flux for soldering never stick to Heat-Seal.
Such solvent on Heat-Seal may cause connection problem of heat-Seal and TAB.
8) Do not forcibly pull or bend the TAB I/O terminals.
9) Do not attempt to disassemble or process the LCD module.
10)NC terminal should be open. Do not connect anything.
11)If the logic circuit power is off, do not apply the input signals.
12)To prevent destruction of the elements by static electricity, be careful to maintain
an optimum work environment.
· Be sure to ground the body when handling the LCD module.
· Tools required for assembly, such as soldering irons, must be properly grounded.
· To reduce the amount of static electricity generated, do not conduct assembly
and other work under dry conditions.
· The LCD module is coated with a film to protect the display surface. Exercise
care when peeling off this protective film since static electricity may be
generated.
11.2 Storage Precautions
LG128642-BMDWH6V
- 20 -
1) When storing the LCD module, avoid exposure to direct sunlight or to the light of
fluorescent lamps and high temperature/high humidity. Whenever possible, the
LCD module should be stored in the same conditions in which they were shipped
from our company.
2) Exercise care to minimize corrosion of the electrodes. Corrosion of the electrodes
is accelerated by water droplets or a current flow in a high humidity environment.
11.3 Design Precautions
1) The absolute maximum ratings represent the rated value beyond which LCD module
can not exceed. When the LCD modules are used in excess of this rated value, their
operating characteristics may be adversely affected.
2) To prevent the occurrence of erroneous operation caused by noise, attention must
be paid to satisfy VIL, VIH specification values, including taking the precaution of
using signal cables that are short.
3) The liquid crystal display exhibits temperature dependency characteristics. Since
recognition of the display becomes difficult when the LCD is used outside its
designated operating temperature range, be sure to use the LCD within this range.
Also, keep in mind that the LCD driving voltage levels necessary for clear displays
will vary according to temperature.
4) Sufficiently notice the mutual noise interference occurred by peripheral devices.
5) To cope with EMI, take measures basically on outputting side.
6) If DC is impressed on the liquid crystal display panel, display definition is rapidly
deteriorated by the electrochemical reaction that occurs inside the liquid crystal
display panel. To eliminate the opportunity of DC impressing, be sure to maintain
the AC characteristics of the input signals sent to the LCD Module.
11.4 Others
1) Liquid crystals solidify under low temperatures (below the storage temperature
range) leading to defective orientation or the generation of air bubbles (black or
white).
Air bubbles may also be generated if the LCD module is subjected to a strong
shock at a low temperature.
2) If the LCD modules have been operating for a long time showing the same display
patterns, the display patterns may remain on the screen as ghost images and a
slight contrast irregularity may also appear. A normal operating status can be
regained by suspending use for some time. It should be noted that this
phenomenon does not adversely affect performance reliability.
3) To minimize the performance degradation of the LCD modules resulting from
destruction caused by static electricity, etc., exercise care to avoid touching the
following sections when handling the module:
· Terminal electrode sections.
· Part of pattern wiring on TAB, etc.
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