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Display Elektronik GmbH
LCD MODULE
DEM 08202 SYH-LY
Product Specification Version : 1.1.0
29/Dec./2007
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DEM 08202 SYH-LY General Specification
DOCUMENT REVISION HIST ORY
Version DATE DESCRIPTION CHANGED BY
0 20.07.2005 First issue MHO
1.1.0 29.11.2007 New IC MH
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DEM 08202 SYH-LY General Specification
CONTENTS
1. Functions & Features
2. Mechanical specifications
3. Block diagram
4. Dimensional Outline
5. Pin description
6. Maximum absolute limit
7. Electrical characteristics
8. Backlight drawing & specification
9. Electro-Optical characteristics
10.Timing characteristics
11. Control and display command
12. Font Characteristic
13. Precaution for LCD/LCM
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DEM 08202 SYH-LY General Specification
1. FUNCTIONS & FEATURES
1.1. Display Format : 8x2 Characters
1.2. LCD Mode : STN, Positive, Transflective, Yellow-Green
1.3. Viewing Direction : 6 o’clock
1.4. Driving Scheme : 1/16 Duty , 1/5 Bias
1.5. Power Supply Voltage (V
1.6. LCD Driving Voltage(Vlcd) : 4.5 Volt (typ.)
1.7. Operation Temperature : -20 ~ 70 °C
1.8. Storage Temperature : -30 ~ 80 °C
1.9. Backlight Color : LED, Yellow-Green
) : 5.0 Volt (typ.)
DD
2. MECHANICAL SPECIFICATIONS
2.1. Module Size : 58.00 x 32.00 x 13.00 mm
2.2. Viewing Area : 35.00 x 15.00 mm
2.3 Character Pitch : 3.25 x 5.70 mm
2.4 Character Size : 2.45 x 5.00 mm
2.5. Dot Pitch : 0.50 x 0.55 mm
2.6. Dot Size : 0.45 x 0.50 mm
3. BLOCK DIAGRAM
VSS
VDD
Vo
RS
E
R/W
DB0−DB7
LEDA
LEDK
CONTROL
LSI
SPLC780D-001B-C
COM
VDD(+5.0V)
Vo
VR(0~20K)
VSS(0V)
LEDA(+5.0V)
LEDK(0V)
SEG
LCD Panel
LCD
MODULE
Backlight
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DEM 08202 SYH-LY General Specification
4. DIMENSIONAL OUTLINE
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DEM 08202 SYH-LY General Specification
5. PIN DESCRIPTION
No. Symbol Function
1 VSS Power ground (0V)
2 VDD Power supply for Logic(+5V)
3 V0 Power supply for LCD drive
4 RS Register selection (H: Data register , L :Instruction register)
5 RW Read/write selection (H: Read , L: Write)
6 E Enable signal.
7-14 DB0~DB7 Data Bus line
15 LED+(A) Power supply for Backlight (+5Volt)
16 LED-(K) Power supply for Backlight.
6. MAXIMUM ABSOUTE LIMIT
Item Symbol MIN MAX Unit
Supply Voltage for Logic VDD -0.3 7.0 V
Supply Voltage for LCD V0 VDD-12.0 VDD+0.3 V
Input Voltage Vin -0.3 VDD+0.3 V
Supply Current for Backlight IF(Ta = 25°C) --- 120 mA
Reverse Voltage for Backlight VR(Ta = 25°C) --- 10 V
Operating Temperature Top -20 70 °C
Storage Temperature Tst -30 80 °C
7. ELECTRICAL CHARACTERISTICS
Item Symbol Condition Min Typ Max
Supply Voltage for Logic VDD-VSS Ta = 25°C 4.8 5.0 5.2 V
Input High Voltage VIH Ta = 25°C 0.7VDD --- VDD V
Input Low Voltage VIL Ta = 25°C -0.3 --- 0.2 VDD V
Output High Voltage(TTL) VOH Ta = 25°C 0.75VDD --- --- V
Output Low Voltage(TTL) VOL Ta = 25°C --- --- 0.2VDD V
Supply Current IDD Ta = 25°C --- --- 3.0 mA
Unit
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DEM 08202 SYH-LY General Specification
8. BACK LIGHT CHARACTERISTICS
LCD Module with LED Backlight (Lightbox, Array-type)
ELECTRICAL RATINGS
Ta = 25°C
Item Symbol Condition Min Typ Max Unit
Forward Voltage
Reverse Current
Luminous Intensity (Without
LCD )
Wave length
Color
VF IF=60mA 4.0 4.2 4.4 V
IR VR=10V --- 600 --- uA
IV IF=60mA 170 230 --- Cd/m2
λρ IF=60mA 569 572 575 nm
Yellow-Green
9. ELECTRO-OPTICAL CHARACTERISTICS
( VOP = 4.5V, Ta = 25°C )
Item Symbol Condition Min Typ Max Unit
Ta = -20°C 4.9 5.1 5.3
Ta = 25°C 4.2 4.5 4.8
Ta = 70°C 3.7 3.9 4.0
Ta = 25°C
Cr≥ 2
--- 200 --- ms
-40 --- +40 deg
-40 --- +40 deg
V
Operating Voltage
Response time
Contrast Cr Ta = 25°C --- 4 --- ---
Viewing angle range
Vop
Tr --- 185 --- ms
Tf
θ
Ф
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DEM 08202 SYH-LY General Specification
10. TIMING CHARACTERISTICS
Write mode(writing data from MPU to SPLC780D)
Read mode( reading data from SPLC780D to MPU)
Write mode timing diagram(Writing data from MPU to SPLC780D)
Read mode timing diagram(Reading data from SPLC780D to MPU)
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11. CONTROL AND DISPLAY COMMAND
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12. Font Characteristic
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DEM 08202 SYH-LY General Specification
13 Precaution for using LCD/LCM
LCD/LCM is assembled and adjusted with a high degree of precision. Do not attempt to make any
alteration or modification. The followings should be noted.
General Precautions:
1. LCD panel is made of glass. Avoid excessive mechanical shock or applying strong pressure onto
the surface of display area.
2. The polarizer used on the display surface is easily scratched and damaged. Extreme care should
be taken when handling. To clean dust or dirt off the display surface, wipe gently with cotton, or
other soft material soaked with isoproply alcohol, ethyl alcohol or trichlorotriflorothane, do not
use water, ketone or aromatics and never scrub hard.
3. Do not tamper in any way with the tabs on the metal frame.
4. Do not make any modification on the PCB without consulting Display Elektronik.
5. When mounting a LCM, make sure that the PCB is not under any stress such as bending or
twisting. Elastomer contacts are very delicate and missing pixels could result from slight
dislocation of any of the elements.
6. Avoid pressing on the metal bezel, otherwise the elastomer connector could be deformed and
lose contact, resulting in missing pixels and also cause rainbow on the display.
7. Be careful not to touch or swallow liquid crystal that might leak from a damaged cell. Any liquid
crystal adheres to skin or clothes, wash it off immediately with soap and water.
Static Electricity Precautions:
1. CMOS-LSI is used for the module circuit; therefore operators should be grounded whenever
he/she comes into contact with the module.
2. Do not touch any of the conductive parts such as the LSI pads; the copper leads on the PCB and
the interface terminals with any parts of the human body.
3. Do not touch the connection terminals of the display with bare hand; it will cause disconnection
or defective insulation of terminals.
4. The modules should be kept in anti-static bags or other containers resistant to static for storage.
5. Only properly grounded soldering irons should be used.
6. If an electric screwdriver is used, it should be grounded and shielded to prevent sparks.
7. The normal static prevention measures should be observed for work clothes and working
benches.
8. Since dry air is inductive to static, a relative humidity of 50-60% is recommended.
Soldering Precautions:
1. Soldering should be performed only on the I/O terminals.
2. Use soldering irons with proper grounding and no leakage.
3. Soldering temperature: 280°C+
4. Soldering time: 3 to 4 second.
5. Use eutectic solder with resin flux filling.
6. If flux is used, the LCD surface should be protected to avoid spattering flux.
7. Flux residue should be removed.
10°C
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DEM 08202 SYH-LY General Specification
Operation Precautions:
1. The viewing angle can be adjusted by varying the LCD driving voltage Vo.
2. Since applied DC voltage causes electro-chemical reactions, which deteriorate the display, the
applied pulse waveform should be a symmetric waveform such that no DC component remains.
Be sure to use the specified operating voltage.
3. Driving voltage should be kept within specified range; excess voltage will shorten display life.
4. Response time increases with decrease in temperature.
5. Display color may be affected at temperatures above its operational range.
6. Keep the temperature within the specified range usage and storage. Excessive temperature
and humidity could cause polarization degradation, polarizer peel-off or generate bubbles.
7. For long-term storage over 40°C is required, the relative humidity should be kept below 60%,
and avoid direct sunlight.
Limited Warranty
Our LCDs and modules are not consumer products, but may be incorporated by DISPLAY
ELEKTRONIK’s customers into consumer products or components thereof, DISPLAY
ELEKTRONIK does not warrant that its LCDs and components are fit for any such particular
purpose.
1. The liability of DISPLAY ELEKTRONIK is limited to repair or replacement on the terms set
forth below. DISPLAY ELEKTRONIK will not be responsible for any subsequent or
consequential events or injury or damage to any personnel or user including third party personnel
and/or user. Unless otherwise agreed in writing between DISPLAY ELEKTRONIK and the
customer, DISPLAY ELEKTRONIK will only replace or repair any of its LCD which is found
defective electrically or visually when inspected in accordance with DISPLAY ELEKTRONIK
general LCD inspection standard . (Copies available on request)
2. No warranty can be granted if any of the precautions state in handling liquid crystal display
above has been disregarded. Broken glass, scratches on polarizer mechanical damages as well as
defects that are caused accelerated environment tests are excluded from warranty.
3. In returning the LCD/LCM, they must be properly packaged; there should be detailed description
of the failures or defect.
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