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SPECIFICATION
Model:
LG128641-SFLYH6V

LG128641-SFLYH6V
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1. BASIC SPECIFICATIONS
1.1 Display Specifications
LCD Mode Display Color Background Color Driving Method Viewing Direction Backlight : : : : : : STN Positive Transflective Dark Blue Yellow-Green 1/64 Duty,1/9 Bias 6:00 LED
1.2 Mechanical Specifications
Outline Dimension Viewing Area Dot Matrix Dot Size Dot Pitch Weight : : : : : : 78.0(W) X 70.0(H) X 13.0(T) 62.0(W) X 44.0(H) 128 X 64 Dots 0.40 X 0.55 0.44 X 0.60 75 mm mm g mm mm
1.3 Block Diagram
KS0107 or Eqv.
64 COM
LCD PANEL 128 x 64 dots
64 SEG VDD VSS VO VOUT DC/DC Converter KS0108 or Eqv.
64 SEG KS0108 or Eqv.
DB0 DB7 RS, R/W, E, /RST /CS1 /CS2 LEDA LEDK LED Backlight
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1.4 Terminal Functions
Pin No. 1 2 3 4 5 6 Symbol /CS1 /CS2 VSS VDD VO RS Level L L H/L Function Chip Selection for IC1, Active "L" Chip Selection for IC2, Active "L" Ground Power Supply for Logic (+5V) Power Supply for LCD Register Selection H: Display Data H/L L: Instruction Code
7
R/W
Read/Write Selection H: Read Operation L: Write Operation Enable Signal. Read data when E is "H", write
8 9 10 11 12 13 14 15 16 17 18 19 20
E DB0 DB1 DB2 DB3 DB4 DB5 DB6 DB7 /RST VOUT LEDA LEDK
H, H H/L H/L H/L H/L H/L H/L H/L H/L L ----
L
data at the falling edge of E. Data Bit0 Data Bit1 Data Bit2 Data Bit3 Data Bit4 Data Bit5 Data Bit6 Data Bit7 Reset Signal, Active Low Negative Voltage Output (-10V) LED Power Supply (+5V) LED Power Supply (0V)
2. ABSOLUTE MAXIMUM RATINGS
Item Supply Voltage(Logic) Supply Voltage(LCD) Input Voltage Operating Temp. Storage Temp. Symbol VDD-VSS VDD-VO VI Topr Tstg Min. -0.3 -0.3 -0.3 -20 -30 Max. 7.0 19.0 VDD+0.3 70 80 Unit V V V
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3. ELECTRICAL CHARACTERISTICS
3.1 DC Characteristics Item Supply Voltage (Logic) Supply Voltage (LCD Drive) Input High Voltage Input Low Voltage Output High Voltage Output Low Voltage Supply Current (Logic) Symbol VDD VDD-VO VIH VIL VOH VOL IDD IOH=-0.2mA IOL=1.6mA VDD=5.0V Condition Min. 4.5 -2.0 0 2.4 0 -(VDD=5.0VD10%, Ta=25:) Typ. 5.0 12.0 ----6.0 Max. 5.5 -VDD 0.8 VDD 0.4 8.0 UNIT V V V V V V V
3.2 Interface Timing Chart Characteristic E Cycle E High Level Width E Low Level Width E Rise Time E Fall Time Address Set-Up Time Address Hold Time Data Set-Up Time Data Delay Time Data Hold Time(Write) Data Hold Time(Read) Symbol Min. 1000 450 450 --140 10 200 -10 10
(VDD=5.0VD10%, Ta=25:) Typ. -----------Max. ---25 25 ---320 --Unit ns ns ns ns ns ns ns ns ns ns ns
tC tWH tWL tR tF tASU tAH tDSU tD tDHW tDHR
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tC t WL E
tR t ASU R/W
t WH
tF t AH
t ASU /CS1, /CS2 RS
t AH
t DSU t DSU
DB0~DB7
Fig.1 MPU Write Timing
tC t WL E
tR
t WH
tF
R/W t ASU t ASU /CS1, /CS2 RS t AH t AH
tD
t DHR
DB0~DB7
Fig.2 MPU Read Timing
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3.3 LED Backlight Characteristics (Ta=25 Item Forward Voltage Forward Current Peak Wave Length Luminance Symbol Vf If p Lv
) Min. 3.9 Typ. 4.1 300 568 -Max. 4.3 ---UNIT V mA nm cd/m2
Condition
Vf=4.1V If=300mA If=300mA
--50
3.4 Power Supply
VDD +5V VSS VR 20 k
VO VOUT LEDA
+5V LEDK
LCM
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4. OPERATING PRINCIPLES & METHODES
4.1 I/O Buffer Input buffer controls the status between the enable and display of chip. Unless the /CS1 or /CS2 is in active mode, input or output of data and instruction does not execute. Therefore internal state is not change. But /RST can operates regardless /CS1 or /CS2. 4.2 Input Register Input register is provided to interface with MPU which operates in different frequency. Input register stores the data temporarily before writing it into display data RAM. When /CS1 or /CS2 is in the 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. 4.3 Output Register Output register stores the data temporarily which is read from display data RAM when CS1 or CS2 is in active mode and R/W and RS=H, stored data in display data RAM is latched in output register. When /CS1 or /CS2 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. RS L H R/W L H L H Instruction Status read (busy check) Data write (from input register to display data RAM) Data read (from display data RAM to output register) Function
4.4 Reset The system can be initialized by setting /RST terminal at low level when turning power on, receiving instruction from MPU. 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.
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The Conditions of power supply at initial power up are shown below. Item Reset time Rise time Symbol Min. 1.0 -Typ. --Max. -200 Unit s ns
tRS tR
4.5V
V DD
t RS
tR 0.7V DD 0.3V DD
/RST
4.5 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.
RS R/W
E Address Output Register DB0~DB7
Busy check Write address N Busy Read data check (dumy) N N+1 N+2
Data at address N Busy check Read data address N
Data at address N+1 Busy check Read data address N+1
Busy Check
4.6 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.
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4.7 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. 4.8 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. 4.9 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. 4.10 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.
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5. DISPLAY CONTROL INSTRUCTION
The display control instructions control the internal state of the KS0108. Instruction is received from MPU to KS0108 for the display control. The following table shows various instructions.
Instruction Display ON/OFF D/I 0 R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 0 0 0 1 1 1 1 1 Function
0/1 Controls the display on or off. Internal status and display RAM data are not affected.
Set Address (Y address) Set Page (X address) Display Start Line (Z address) Status Read
0
0
0
1
Y address (0-63)
Sets the Y address at the Y address counter.
0
0
1
0
1
1
1
Page (0-7)
Sets the X address at the X address register. Indicates the display data RAM displayed at the top of the screen.
0
0
1
1
Display start line (0-63)
0
1
B U S Y
0
O N / O F F
R E S E T
0
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 Data
1
0
Display 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.
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5.1 Display On/Off RS 0 R/W 0 DB7 0 DB6 0 DB5 1 DB4 1 DB3 1 DB2 1 DB1 1 DB0 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 0 DB7 0 DB6 1 DB5 AC5 DB4 AC4 DB3 AC3 DB2 AC2 DB1 AC1 DB0 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 0 R/W 0 DB7 1 DB6 0 DB5 1 DB4 1 DB3 1 DB2 AC2 DB1 AC1 DB0 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 0 R/W 0 DB7 1 DB6 1 DB5 AC5 DB4 AC4 DB3 AC3 DB2 AC2 DB1 AC1 DB0 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.
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5.5 Status Read RS 1 * R/W 0 DB7 BUSY DB6 0 DB5 ON/OFF DB4 RESET DB3 0 DB2 0 DB1 0 DB0 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 0 R/W 1 DB7 D7 DB6 D6 DB5 D5 DB4 D4 DB3 D3 DB2 D2 DB1 D1 DB0 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 1 R/W 1 DB7 D7 DB6 D6 DB5 D5 DB4 D4 DB3 D3 DB2 D2 DB1 D1 DB0 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.
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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 Column Address 1st KS0108B 2nd KS0108B Line Address 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 40 SEG1 41 SEG2 42 SEG3 -7D SEG62 7E SEG63 7F SEG64 40 SEG65 41 SEG66 42 SEG67 -7D SEG126 7E SEG127 7F SEG128 Common 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
B8
B9
BA
BB
BC
BD
BE
BF
Segment
--
--
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7. CONNECTION WITH 8051 FAMILY MPU
8051 P0.0~P0.7 8 74LS373 8 A0 A1 A2 A3
KS0108 DB0~DB7 RS R/W /CS1 /CS2
P2.5~P2.7
3 74LS138
Y0
/RD /WR RST
E
/RST
a. Application Circuit 1
8051 8 P1.0~P1.7 P3.0 P3.1 P3.2 P3.3 P3.4 RST
KS0108 DB0~DB7 RS R/W E /CS1 /CS2 /RST
b. Application Circuit 2
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8. ELECTRO OPTICAL CHARACTERISTICS (Ta=25 )
Item View Angle Contrast Response Time Symbol 2- 1 K tr (rise) tf (fall) Condition K2 , =0 =0 =0 =0 ,=0 ,=0 ,=0 Min. -3 --Typ. 60 -250 250 Max. ----Unit Deg -ms ms Note Note1, Note2 Note3 Note3
Note1: Definition of Viewing Angle
,
Z( =0 ) Y( =180 =-90 , )
1
Top
2
X
X'
Bottom Y'( =0 =+90 , )
Note2: Definition of viewing Angle Range:
1,
2
K
2.0
1
Viewing Angle
2
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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
Selective state
Non-selective state
Brightness
100%
90%
10%
tf Time
tr
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9. DIMENSIONAL OUTLINE
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10. LAUREL LCD MODULE NUMBERING SYSTEM
L G 128 64 1 S F L Y H 6 V XX
(1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13)
(1) Brand : Laurel products (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 digits 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 S - STN Positive, Yellow-green B - STN Negative, Blue K - FSTN Negative, Black (7) Polarizer mode R - Reflective (8) Backlight type N - Without backlight (9) Backlight color Y - Yellow-green A - Amber B - Blue R - Red W - White M - Multi color
o o
N - TN Negative, Blue G - STN Positive, Gray F - FSTN Positive, White
F - Transflective
M - Transmissive
L - Array LED
D - Edge light LED
E - EL
C - CCFL
G - Green
(10) Operating temperature range S - Standard temperature ( 0 ~ +50 C ) (11) Viewing direction 3 - 3:00 6 - 6:00 9 - 9:00 U - 12:00 H - Extended Temperature ( -20 ~ +70 C )
(12) DC-DC Converter N - Without DC-DC converter (13) Version code Nil - Standard product 01~ZZ - Version code V - Built in DC-DC converter
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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. J Isopropyl alcohol J Ethyl alcohol Solvents other than those mentioned above may damage the polarizer. Especially, do not use the following: J Water J Ketone J 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. J Be sure to ground the body when handling the LCD module. J Tools required for assembly, such as soldering irons, must be properly grounded. J To reduce the amount of static electricity generated, do not conduct assembly and other work under dry conditions. J 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 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
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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. J Part of pattern wiring on TAB, etc. J

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