ETC2 LC128641-TRLNHUV Lcd module specification Datasheet

LCD Module Specification
Model:
LG128642-BMDWH6V
Table of Contents
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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
1. BASIC SPECIFICATIONS
1.1 Features
Display Format
LCD Mode
: 128 X 64 Dots
: STN-Blue-Negative-Transmissive
Driving Method
:
Viewing Direction :
Backlight
:
Outline Dimension :
Viewing Area
:
Dot Size
:
Dot Pitch
:
Weight
:
Controller
:
1/64 Duty, 1/9 Bias
6:00
LED, white color
75.0(W) X 52.7(H) X 11.5(T)
60.0(W) X 32.6(H)
0.40 X 0.40
0.43 X 0.43
45
S6B0108 (KS0108B)
mm
mm
mm
mm
g
1.2 Block Diagram
S6B0107
64 COM
or Eqv.
LCD PANEL
128 x 64 dots
64 SEG
VDD
VSS
VO
VOUT
Power
Circuit
To LSI
S6B0108
or Eqv.
DB0 DB7
RS, R/W, E, /RST
/CS1
/CS2
LEDA
LEDK
LED Backlight
64 SEG
S6B0108
or Eqv.
-2-
LG128642-BMDWH6V
-3-
1.3 Terminal Functions
Pin No.
Symbol
Level
Function
1
VDD
+5V
Power supply for logic
2
VSS
0V
Ground
3
VO
-
4
DB0
H/L
Data bit0
5
DB1
H/L
Data bit1
6
DB2
H/L
Data bit2
7
DB3
H/L
Data bit3
8
DB4
H/L
Data bit4
9
DB5
H/L
Data bit5
10
DB6
H/L
Data bit6
11
DB7
H/L
Data bit7
12
/CS1
L
Chip selection for IC1, active “L”
13
/CS2
L
Chip selection for IC2, active “L”
14
/RST
L
Reset signal, active “L”
15
R/W
H/L
16
RS
H/L
17
E
H, H→L
18
VOUT
-10V
Output voltage for LCD driving
19
LEDA
+5V
Power supply for LED backlight
20
LEDK
0V
Power supply for LED backlight
Operating voltage for LCD (contrast adjusting)
Read/Write selection
H: Read operation L: Write operation
Register selection
H: Display data
L: Instruction code
Enable signal. Read data when E is “H”, write
data at the falling edge of E
2. ABSOLUTE MAXIMUM RATINGS
Item
Symbol
Min.
Max.
Unit
Supply Voltage(Logic)
VDD-VSS
-0.3
7.0
V
Supply Voltage(LCD)
VDD-VO
-0.3
19.0
V
VI
-0.3
VDD+0.3
V
Operating Temp.
Topr
-20
70
℃
Storage Temp.
Tstg
-30
80
℃
Input Voltage
LG128642-BMDWH6V
-4-
3. ELECTRICAL CHARACTERISTICS
(VDD=5.0V±10%, Ta=25℃)
3.1 DC Characteristics
Item
Min.
Typ.
Max.
Unit
4.5
5.0
5.5
V
VDD-VO
--
11.2
--
V
Input High Voltage
VIH
2.0
--
VDD
V
Input Low Voltage
VIL
0
--
0.8
V
Output High Voltage
VOH
IOH=-0.2mA
2.4
--
VDD
V
Output Low Voltage
VOL
IOL=1.6mA
0
--
0.4
V
Supply Current
(Logic)
IDD
--
6.0
8.0
mA
Supply Voltage
(Logic)
Supply Voltage
(LCD Driving)
Symbol
Condition
VDD
VDD=5.0V
(VDD=5.0V±10%, Ta=25℃)
3.2 Interface Timing Chart
Characteristic
Min.
Typ.
tC
1000
--
--
ns
E High Level Width
tWH
450
--
--
ns
E Low Level Width
tWL
450
--
--
ns
E Rise Time
tR
--
--
25
ns
E Fall Time
tF
--
--
25
ns
Address Set-Up Time
tASU
140
--
--
ns
Address Hold Time
tAH
10
--
--
ns
Data Set-Up Time
tDSU
200
--
--
ns
Data Delay Time
tD
--
--
320
ns
Data Hold Time(Write)
tDHW
10
--
--
ns
Data Hold Time(Read)
tDHR
10
--
--
ns
E Cycle
Symbol
Max.
Unit
LG128642-BMDWH6V
tC
t WL
E
tR
t WH
tF
t AH
t ASU
R/W
t ASU
t AH
/CS1, /CS2
RS
t DSU
t DSU
DB0~DB7
Fig.1 MPU Write Timing
tC
t WL
E
tR
t WH
tF
R/W
t ASU
t AH
t AH
t ASU
/CS1, /CS2
RS
tD
DB0~DB7
Fig.2 MPU Read Timing
t DHR
-5-
LG128642-BMDWH6V
-6-
3.3 LED Backlight Characteristics (Ta=25℃)
Item
Symbol
Forward Voltage
Vf
Forward Current
If
Condition
Vf=3.1V
Color
Min.
Typ.
Max.
Unit
2.9
3.1
3.3
V
--
45
--
mA
White
3.4 Power Supply
VDD
+5V
VR
20 k Ω
VO
LCM
VSS
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
H
R/W
Function
L
Instruction
H
Status read (busy check)
L
Data write (from input register to display data RAM)
H
Data read (from display data RAM to output register)
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
Output
Register
DB0~DB7
N+2
Data at address N
Busy
check
Write
address N
Busy Read data
check (dumy)
Busy
check
Read data
address N
Data at address N+1
Busy
check
Read data
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
Reset time
Rise time
Symbol
Min.
Typ.
Max.
tRS
tR
1.0
--
--
Unit
μs
--
--
200
ns
4.5V
V DD
/RST
t RS
tR
0.7V DD
0.3V DD
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
0
0
0
0
1
1
1
1
1
Function
0/1 Controls the display on or off.
ON/OFF
Internal status and display RAM data
are not affected.
Set Address
0
0
0
1
Y address (0-63)
Sets the Y address at the Y address
(Y address)
Set Page
counter.
0
0
1
0
1
1
1
(X address)
Display Start
0
0
1
1
Page
Sets the X address at the X address
(0-7)
register.
Display start line
Line
Indicates the display data RAM
(0-63)
displayed at the top of the screen.
(Z address)
Status Read
0
1
B
0
O
R
U
N
E
S
/
S
Y
O
E
F
T
0
F
0
0
0
Reads status.
BUSY
0: Ready
1: In internal operation
ON/OFF
0: Display ON
1: Display OFF
RESET
0: Normal
1: Reset
Write Display
1
0
Display Data
Data
Writes data (DB0~DB7) into display
data RAM. After writing instruction, Y
address is increased by 1
automatically.
Read Display
Data
1
1
Display Data
Reads data (DB0~DB7) from display
data RAM to the data bus.
LG128642-BMDWH6V
- 11 -
5.1 Display On/Off
RS
R/W
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
0
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
R/W
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
0
0
0
1
AC5
AC4
AC3
AC2
AC1
AC0
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.
5.3 Set Page (X Address)
RS
R/W
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
0
0
1
0
1
1
1
AC2
AC1
AC0
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
R/W
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
0
0
1
1
AC5
AC4
AC3
AC2
AC1
AC0
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
R/W
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
0
1
BUSY
0
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
R/W
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
1
0
D7
D6
D5
D4
D3
D2
D1
D0
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
R/W
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
1
1
D7
D6
D5
D4
D3
D2
D1
D0
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
6. DISPLAY DATA RAM ADDRESS MAP
41
42
--
7D
7E
7F
40
41
42
--
7D
7E
7F
--
--
SEG126
SEG127
SEG128
Segment
40
SEG67
BF
SEG66
BE
SEG65
BD
SEG64
BC
SEG63
BB
SEG62
BA
2nd KS0108B
SEG3
B9
1st KS0108B
SEG2
B8
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
Column
Address
SEG1
Page
Address
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
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
- 13 -
LG128642-BMDWH6V
7. CONNECTION WITH 8051 FAMILY MPU
8051
LG128642
8
P0.0~P0.7
DB0~DB7
8
74LS373
P2.5~P2.7
A0
A1
A2
A3
RS
R/W
/CS1
/CS2
Y0
3
74LS138
/RD
/WR
E
RST
/RST
a. Application Circuit 1
LG128642
8051
8
P1.0~P1.7
DB0~DB7
P3.0
RS
P3.1
R/W
P3.2
E
P3.3
/CS1
P3.4
/CS2
RST
/RST
b. Application Circuit 2
- 14 -
LG128642-BMDWH6V
- 15 -
8. ELECTRO—OPTICAL CHARACTERISTICS (Ta=25℃)
Item
Symbol
Condition
Min.
Typ.
Max.
Unit
Note
View Angle
Φ2-Φ1
K≥2 , θ=0°
--
70
--
Deg
Note1, Note2
Contrast
K
Φ=0°,θ=0°
3
--
--
--
Note3
tr (rise)
Φ=0°,θ=0°
--
250
--
ms
Note3
Response Time
Φ=0°,θ=0°
tf (fall)
--
250
Note1: Definition of Viewing Angle θ,Φ
Z( φ =0° )
φ1
Y( θ =180° , φ =-90° )
Top
φ2
X'
θ
X
Bottom
Y'( θ =0° , φ =+90° )
Note2: Definition of viewing Angle Range:
K
2.0
φ1
φ2
Viewing Angle
Φ1,Φ2
--
ms
LG128642-BMDWH6V
Note3: Definition of Contrast
K
B1
Brightness
B2
Driving Voltage
Contrast=
Brightness of non-selected dot (B1)
Brightness of selected dot (B2)
Note4: Definition of Response Time
Non-selective
state
tr
10%
90%
Selective state
100%
Brightness
Non-selective
state
tf
Time
- 16 -
LG128642-BMDWH6V
9. DIMENSIONAL OUTLINE
- 17 -
LG128642-BMDWH6V
- 18 -
10. LCD MODULE NUMBERING SYSTEM
L G 128 64 2 ―
(1)
(2)
(3)
(1)
Brand
(2)
Module type
(4)
B M D W H 6 V ― XXX
(5)
(6) (7)
(8)
(9) (10) (11) (12)
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
(7)
T - TN Positive, Gray
N - TN Negative, Blue
S - STN Positive, Yellow-green
G - STN Positive, Gray
B - STN Negative, Blue
F - FSTN Positive, White
K - FSTN Negative, Black
L - FSTN Negative, Blue
Polarizer mode
R - Reflective
(8)
F - Transflective
Backlight type
N - Without backlight
(9)
M - Transmissive
L - Array LED
D - Edge light LED
E - EL
C - CCFL
Backlight color
Y - Yellow-green
B - Blue
W - White
G - Green
A - Amber
R - Red
M - Multi color
Nil –Without backlight
(10) Operating temperature range
S - Standard temperature ( 0 ~ +50 oC )
H - Extended Temperature ( -20 ~ +70 oC )
(11) Viewing direction
3 - 3:00
6 – 6:00
9 – 9:00
U – 12:00
(12) DC-DC Converter
N or Nil – Without DC-DC converter
(13) Version code
0~ZZZ – Version code
V – Built in DC-DC converter
(13)
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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