LM240120BCW TOPWAY | Alldatasheet
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URL: www.topwaydisplay.com www.topwaysz.com Document Name: LM240120BCW-Manual-Rev0.1.DOC Page: 1 of 10 LM240120BCW LCD Module User Manual Prepared by: Cai Checked by: Approved by: Date: 2008-07-22 Date: Date: Rev. Descriptions Release Date
0.1 Preliminary release 2008-07-22
TOPWAY LCD Module User Manual LM240120BCW URL: www.topwaydisplay.com www.topwaysz.com Document Name: LM240120BCW-Manual-Rev0.1.DOC Page: 2 of 10 Table of Content
TOPWAY LCD Module User Manual LM240120BCW URL: www.topwaydisplay.com www.topwaysz.com Document Name: LM240120BCW-Manual-Rev0.1.DOC Page: 3 of 10 1. Basic Specifications
1.1 Display Specifications
1) LCD Display Mode : FSTN, Positive, Transflective 2) Display Color : Display Data = “1” : Deep Blue(*1) : Display Data = “0” : Light Gray (*2) 3) Viewing Angle : 12H 4) Driving Method : 1/128 duty, 1/12 bias 5) Backlight : White LED backlight Note: *1. Color tone may slightly change by Temperature and Driving Condition. *2. The Color is defined as the inactive / background color
1.2 Mechanical Specifications
1) Outline Dimension : 84.0 x 50.0 x 8.7MAX (mm) (See attached Outline Drawing for details)
1.3 Block Diagram
DB0~DB7 CS, /RST, D/C, /WR, /RD Backlight Circuit LCD Panel 240×120Pixels UC1608 or equivalent
TOPWAY LCD Module User Manual LM240120BCW URL: www.topwaydisplay.com www.topwaysz.com Document Name: LM240120BCW-Manual-Rev0.1.DOC Page: 4 of 10
1.4 Terminal Functions
Pin No. PIN Name I/O Descriptions
1 VSS Supply Negative power supply,0V
2 VDD Supply Positive power supply
3 DB7
: :
10 DB0
I/O 8-bit Data bus; Three state I/O terminal for display data or instruction data when /CS=H, D0~D7=High Impedance 11 /RD Input /WR=H, /RD=L; Data or Status read form the LCD module 12 /WR Input /WR=L ÆH, /RD=H; Data or Instruction latch into the LCD module D/C Input Register Select D/C = H, Transferring the Display Data D/C = L, Transferring the Control Data /RST Input Reset signal /RST = L, Initialization is executed /RST = H, Normal running. CS Input Chip Select CS=H, enable access to the LCD module CS=L, disable access to the LCD module
16 BLA Supply Positive power for LED backlight
TOPWAY LCD Module User Manual LM240120BCW URL: www.topwaydisplay.com www.topwaysz.com Document Name: LM240120BCW-Manual-Rev0.1.DOC Page: 5 of 10 2. Absolute Maximum Ratings Items Symbol Min. Max. Unit Condition Supply Voltage V DD -0.3 +3.6 V V SS = 0V Input Voltage V IN -0.3 V DD+0.3 V V SS = 0V Operating Temperature T OP -20 +70 °C No Condensation Storage Temperature T ST -30 +80 °C No Condensation Cautions: Any Stresses exceeding the Absolute Maximum Ratings may cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability. 3. Electrical Characteristics
3.1 DC Characteristics
VSS=0V, VDD=3.0V, TOP=25°C Items Symbol MIN. TYP. MAX. Unit Condition / Application Pin Operating Voltage V DD 2.7 3.0 3.3 V VDD Input High Voltage V IH 0.8xV DD - V DD V Input Low Voltage V IL V SS - 0.2xV DD V /RST, CS, D/C, DB0~DB7, /RD, WR Operating Current I DD - 0.7 2.5 mA VDD
3.2 LED Backlight Circuit Characteristics
VSS=0V, IfBLA=85mA, TOP =25°C Items Symbol MIN. TYP. MAX. Unit Applicable Pin Forward Voltage Vf BLA - 3.3 - V BLA Forward Current If BLA - 85 100 mA BLA Cautions: Exceeding the recommended driving current could cause substantial damage to the backlight and shorten its lifetime. VSS BL A No. of LED = 5pcs
TOPWAY LCD Module User Manual LM240120BCW URL: www.topwaydisplay.com www.topwaysz.com Document Name: LM240120BCW-Manual-Rev0.1.DOC Page: 6 of 10
3.3 AC Characteristics
3.3.1 8080 Mode System Bus Timing VSS=0V, VDD=3.0V, TOP=25°C Item Symbol MIN. TYP. MAX. Unit Address setup time (D/C) tas80 5 - - ns Address hold time (D/C) tah80 25 - - ns System cycle time tcy80 175 - - ns Read pulse width tpwr80 82 - - ns Write pulse width tpww80 44 - - ns High pulse width (read) thpw80 82 - - ns High pulse width (write) thpw80 44 - - ns Data setup time tds80 38 - - ns Data hold time tdh80 25 - - ns Data access time tacc80 - - 75 ns Data output disable time tod80 9 - 25 ns Chip select setup time tcssa80 13 - - ns Chip select setup time tssd80 13 - - ts Chip select setup time tcsh80 25 - - ns Note: *1. Input signal rise/fall time should be less than 15ns . *2. CL=100pF *3.All timing is using 20% and 80% of VDD as the reference.
3.3.2 Reset Timing
VSS=0V, VDD=3.0V, TOP=25°C Item Symbol MIN. TYP. MAX. Unit Reset LOW pulse width trw 1.3 - - µs Note: *1.All timing is using 20% and 80% of VDD as the reference.
TOPWAY LCD Module User Manual LM240120BCW URL: www.topwaydisplay.com www.topwaysz.com Document Name: LM240120BCW-Manual-Rev0.1.DOC Page: 7 of 10 4. Function specifications
4.1 Resetting the LCD module
The LCD module should be initialized by using /RST terminal. While turning on the VDD and VSS power supply, maintain /RST terminal at LOW level. After the power supply stabilized, release the reset terminal (/RST=HIGH)
4.1.1 Display Memory Map
Page address data LCD Display (front view) : D0 Column Address 00h Æ EFh Note: *1. MUX Rate, MR=1 (1/128duty) *2. Start Line, SL[5:0]=000000 *3. Fixed Line, FL[3:0]=0000 *4. SEG mirror, MX=1 (mirror X direction) *5. COM mirror, MY=0 (normal Y direction) *6. MSB First Mapping, MSF=0 240x120 pixels
TOPWAY LCD Module User Manual LM240120BCW URL: www.topwaydisplay.com www.topwaysz.com Document Name: LM240120BCW-Manual-Rev0.1.DOC Page: 8 of 10
4.2 Display Commands
The LCD module contains register, which control the operation. These register can be modified by commands. The following table is a summary of the control registers, their meaning and their default value.
4.2.1 Register Table
Note: Please refer to UC1608 data sheet for details
TOPWAY LCD Module User Manual LM240120BCW URL: www.topwaydisplay.com www.topwaysz.com Document Name: LM240120BCW-Manual-Rev0.1.DOC Page: 9 of 10
4.2.2 Command Table
The following is the list of host command supported. Note: Please refer to UC1608 data sheet for details R/W=0 means it is a write function, R/W=1 means it is a read function D/C=0 means it is a control data, D/C=1 means it is a display data
TOPWAY LCD Module User Manual LM240120BCW URL: www.topwaydisplay.com www.topwaysz.com Document Name: LM240120BCW-Manual-Rev0.1.DOC Page: 10 of 10 5. Design and Handling Precaution 1. The LCD panel is made by glass. Any mechanical shock (eg. dropping form high place) will damage the LCD module. 2. Do not add excessive force on the surface of the display, which may cause the Display color change abnormally. 3. The polarizer on the LCD is easily get scratched. If possible, do not remove the LCD protective film until the last step of installation. 4. Never attempt to disassemble or rework the LCD module. 5. Only Clean the LCD with Isopropyl Alcohol or Ethyl Alcohol. Other solvents (eg. water) may damage the LCD. 6. When mounting the LCD module, make sure that it is free form twisting, warping and distortion. 7. Ensure to provide enough space (with cushion) between case and LCD panel to prevent external force adding on it, or it may cause damage to the LCD or degrade the display result. 8. Only hold the LCD module by its side. Never hold LCD module by add force on the heat seal or TAB. 9. Never add force to component of the LCD module. It may cause invisible damage or degrade of the reliability. 10. LCD module could be easily damaged by static electricity. Be careful to maintain an optimum anti-static work environment to protect the LCD module. 11. When peeling off the protective film from LCD, static charge may cause abnormal display pattern. It is normal and will resume to normal in a short while. 12. Take care and prevent get hurt by the LCD panel sharp edge. 13. Never operate the LCD module exceed the absolute maximum ratings. 14. Keep the signal line as short as possible to prevent noisy signal applying to LCD module. 15. Never apply signal to the LCD module without power supply. 16. IC chip (eg. TAB or COG) is sensitive to the light. Strong lighting environment could possibly cause malfunction. Light sealing structure casing is recommend. 17. LCD module reliability may be reduced by temperature shock. 18. When storing the LCD module, avoid exposure to the direct sunlight, high humidity, high temperature or low temperature. They may damage or degrade the LCD module