LMT024DNHFWL TOPWAY | Alldatasheet
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URL: www.topwaydisplay.com www.topwaysz.com Document Name: LMT024DNHFWL-Manual-Rev0.2 Page: 1 of 17 LMT024DNHFWL LCD Module User Manual Prepared by: Chen Rili Checked by: Approved by: Date: 2018-07-03 Date: Date: Rev. Descriptions Release Date
0.1 Preliminary New release 2017-05-23
0.2 Add Functions 2018-07-03
TOPWAY LCD Module User Manual LMT024DNHFWL URL: www.topwaydisplay.com www.topwaysz.com Document Name: LMT024DNHFWL-Manual-Rev0.2 Page: 2 of 17 Table of Content
TOPWAY LCD Module User Manual LMT024DNHFWL URL: www.topwaydisplay.com www.topwaysz.com Document Name: LMT024DNHFWL-Manual-Rev0.2 Page: 3 of 17 1. Basic Specifications Note: *1. For saturated color display content (eg. pure-red, pure-green, pure-blue or pure-colors-combinations). *2. For “color scales” display content. *3. Color tone may slightly change by temperature and driving condition.
1.1 Block Diagram
Screen Size(Diagonal) : 2.4” Color Depth: 262k color Number of dots : 240(RGB) x 320 Active Area : 36.72 x 48.96 mm Dot Pitch : 0.153 x 0.153 mm Display Technology : a-Si TFT active matrix Display Mode : Transmissive With Normally White Pixel Configuration : RGB Stripe Viewing Direction : 12H (*1) (gray scale inverse) 6H (*2) Polarizer Surface Treatment: Glare Type (3H) Backlight Type: LEDs Outline Dimension : 42.72 x 60.26 x 3.15 mm (exclude FPC , see dwg for details) Operating Temperature : -20 ~ +70°C (No Condensation) Storage Temperature : -30 ~ +80°C (No Condensation) BLK1~4,BLA IOVDD,VDD ILI9341 or equivalent VSS /WR,/RD,D0~D7 RS,/CS, /RST, TE TFT Panel 240(RGB)×320 Backlight Circuit
TOPWAY LCD Module User Manual LMT024DNHFWL URL: www.topwaydisplay.com www.topwaysz.com Document Name: LMT024DNHFWL-Manual-Rev0.2 Page: 4 of 17
1.2 Terminal Functions
Pin No. PIN Name I/O Descriptions
1 BLK4 Power
Negative power for LED backlight : : :
4 BLK1 Power
5 BLA Power Positive power for LED backlight
6 TE Output Tearing effect output pin to synchronize MPU to frame
writing,activated by S/W command
7 D7 I/O
Data Bus : : :
14 D0 I/O
15 VSS Power Negative power supply ,0V
Reset Signal: /RST = L, Initialization is executed /RST = H, Normal running 17 /RD Input Read enable input, active LOW 18 /WR Input Write enable input, active LOW
19 RS Input
Register Select Signal: RS = H, Transferring the Display Data RS = L, Transferring the Control Data 20 /CS Input Chip Select Signal: /CS=L, enable access to the LCD module /CS=H, disable access to the LCD module
21 VSS Power Negative power supply ,0V
22 IOVDD Power IO Positive power
23 VDD Power Positive power supply
24 VSS Power Negative power supply ,0V
TOPWAY LCD Module User Manual LMT024DNHFWL URL: www.topwaydisplay.com www.topwaysz.com Document Name: LMT024DNHFWL-Manual-Rev0.2 Page: 5 of 17 2. Absolute Maximum Ratings Items Symbol Min. Max. Unit Condition Logic Supply Voltage IOVDD -0.3 +4.6 V VSS = 0V Analog Supply Voltage VDD -0.3 +4.6 V VSS = 0V Input Voltage /RST, /WR,/RD D0~D7,RS,/CS -0.3 IOVDD +0.5 V VSS = 0V Operating Temperature T -20 OP +70 °C - Storage Temperature T -30 ST +80 °C - 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, TOP=25°C Items Symbol MIN. TYP. MAX. Unit Application Pin Logic Supply Voltage IOVDD 2.5 3.0 3.3 V IOVDD Analog Supply Voltage VDD 2.5 3.0 3.3 V VDD Input High Voltage V 0.7x IOVDD IH - IOVDD V /RST, /CS, RS, D0~D7,/WR,/RD Input Low Voltage V - IL - 0.3xIOVDD V Output High Voltage V 0.8x IOVDD OH - - V D0~D7,TE Output Low Voltage V - OL - 0.2xIOVDD V Power Consumption Black Mode - - 21.636 mW - 8 color Mode - 5.897 - mW - Sleeping Mode - 0.095 - mW -
3.2 LED Backlight Circuit Characteristics
BLK(1~4)=0V, IBLA =60mA, TOP Items =25℃ Symbol MIN. TYP. MAX. Unit Application Pin Forward Voltage BLA - 3.2 - V BLA Forward Current IBLA - 60 - mA BLA Cautions: Exceeding the recommended driving current could cause substantial damage to the backlight and shorten its lifetime. BLK1 BLA BLK4 No. of LEDs = 4pcs
TOPWAY LCD Module User Manual LMT024DNHFWL URL: www.topwaydisplay.com www.topwaysz.com Document Name: LMT024DNHFWL-Manual-Rev0.2 Page: 6 of 17
3.3 AC Characteristics
3.3.1 8080 Mode System Bus Timing Signal Symbol Parameter min max unit description RS tast Address setup time 0 - ns taht Address hold time(write/read) 10 - ns /CS tchw “S””H” Pulse Widtch 0 - ns tcs Chip select setup time(write) 15 - ns trcs Chip select setup time(read ID) 45 - ns trcsfm Chip select setup time(read FM) 355 - ns tcsf Chip select wait time(write /read) 10 - ns /WR twc Write cycle 66 - ns twrh Control pulse H duration 15 - ns twrl Control pulse L duration 15 ns /RD(ID) trc Read cycle(ID) 160 - ns When read ID data trdh Control pulse H duration(ID) 90 - ns trdl Control pulse H duration(ID) 45 - ns /RD(FM) trcfm Read cycle(FM) 450 - ns When read from Frame memory trdhfm Control pulse H duration(FM) 90 - ns trdlfm Control pulse H duration(FM) 355 - ns D[7:0] tdst Data setup time 10 - ns For maximum CL=30pF For minimum CL=8pF tdht Data hold time 10 - ns trat Read access time(ID) - 40 ns tratfm Read access time(FM) - 340 ns todh Output disable time 20 80 ns Note: *1. Input signal rise/fall time should be less than 15ns . *2. All timing is using 20% and 80% of VDD as the reference. *3. Please refer to ILI9341 datasheet for details
TOPWAY LCD Module User Manual LMT024DNHFWL URL: www.topwaydisplay.com www.topwaysz.com Document Name: LMT024DNHFWL-Manual-Rev0.2 Page: 7 of 17
3.3.2 Reset Timing
Item Symbol MIN. TYP. MAX. Unit Reset LOW pulse width T 10 RW - - us Reset time T - RT - 120 ms
TOPWAY LCD Module User Manual LMT024DNHFWL URL: www.topwaydisplay.com www.topwaysz.com Document Name: LMT024DNHFWL-Manual-Rev0.2 Page: 8 of 17 4. Functions
4.1 Command List
TOPWAY LCD Module User Manual LMT024DNHFWL URL: www.topwaydisplay.com www.topwaysz.com Document Name: LMT024DNHFWL-Manual-Rev0.2 Page: 9 of 17
TOPWAY LCD Module User Manual LMT024DNHFWL URL: www.topwaydisplay.com www.topwaysz.com Document Name: LMT024DNHFWL-Manual-Rev0.2 Page: 10 of 17
TOPWAY LCD Module User Manual LMT024DNHFWL URL: www.topwaydisplay.com www.topwaysz.com Document Name: LMT024DNHFWL-Manual-Rev0.2 Page: 11 of 17
TOPWAY LCD Module User Manual LMT024DNHFWL URL: www.topwaydisplay.com www.topwaysz.com Document Name: LMT024DNHFWL-Manual-Rev0.2 Page: 12 of 17 Note: Please refer to ILITEK ILI9341 data sheet for more details.
TOPWAY LCD Module User Manual LMT024DNHFWL URL: www.topwaydisplay.com www.topwaysz.com Document Name: LMT024DNHFWL-Manual-Rev0.2 Page: 13 of 17
4.2 Display Memory Map
Normal Display ON or Partial Mode ON,Vertical Scroll Mode OFF. In this mode,the content of frame memory within an area where column pointer is 0000h to 00EFh and page pointer is 0000h to 013Fh is displayed.
TOPWAY LCD Module User Manual LMT024DNHFWL URL: www.topwaydisplay.com www.topwaysz.com Document Name: LMT024DNHFWL-Manual-Rev0.2 Page: 14 of 17
4.3 Power On/Off Sequence
Power On Sequence Power Off Sequence
TOPWAY LCD Module User Manual LMT024DNHFWL URL: www.topwaydisplay.com www.topwaysz.com Document Name: LMT024DNHFWL-Manual-Rev0.2 Page: 15 of 17 5. Optical Characteristics Item Symbol Min. Typ. Max. Unit Note/ Condition Brightness Bp 180 200 - Cd/m θ=0°, Φ=0° (*1,*2) Uniformity △Bp - 80% - - Viewing Angle θT(Ф=90°) 60 70 - Deg θL(Ф=180°) 60 70 - Deg θR(Ф=0° ) 60 70 - Deg Contrast Ratio Cr 400 500 - - θ=0° Response Time TON - 20 30 ms θ=0°, Φ=0° (*1,*5) TOFF Color of CIE Coordinate White X 0.236 0.286 0.336 Y 0.261 0.311 0.361 Red X 0.530 0.580 0.630 Y 0.270 0.320 0.370 Green X 0.288 0.338 0.388 Y 0.531 0.581 0.631 Blue X 0.101 0.151 0.201 Y 0.048 0.098 0.148 NTSC Ratio S - 53% - - θ=0°,Φ=0° (*1, *6) Test Conditions: 1. VDD=3.3V,LI=20mA(Backlight current), the ambient temperature is 25℃ 2. The test systems refer to *1and *3 Note: *1. Measurement The optical characteristics should be measured in dark room. After 5 minutes operation, the optical properties are measured at the center point of the LCD screen. All input terminals LCD panel must be ground when measuring the center area of the panel. *2. The luminance uniformity It is calculated by using following formula. △Bp = Bp (Min.) / Bp (Max.)×100 (%) Bp (Max.) = Maximum brightness in 9 measured spots Bp (Min.) = Minimum brightness in 9 measured spots. Measurement equipment PR-705 (Φ8mm)
TOPWAY LCD Module User Manual LMT024DNHFWL URL: www.topwaydisplay.com www.topwaysz.com Document Name: LMT024DNHFWL-Manual-Rev0.2 Page: 16 of 17 *3. The definition of viewing angle: Refer to the graph below marked by θ and Ф *4. The definition of contrast ratio (Test LCM using PR-705): Contrast Ratio(CR)= Luminance When LCD is at “White” state Luminance When LCD is at “Black” state (Contrast Ratio is measured in optimum common electrode voltage) “White state “:The state is that the LCD is driven by Vwhite. “Black state”: The state is that the LCD is driven by Vblack. Vwhite: To be determined Vblack: To be determined. *5. Definition of Response time: The response time is defined as the LCD optical switching time interval between “White” state and “Black” state. Rise time (TON) is the time between photo detector output intensity changed from 90% to 10%. And fall time (TOFF) is the time between photo detector output intensity changed from 10% to 90%. *6: Definition of Color of CIE Coordinate and NTSC Ratio. S= area of RGB triangle x100% area of NTSC triangle
TOPWAY LCD Module User Manual LMT024DNHFWL URL: www.topwaydisplay.com www.topwaysz.com Document Name: LMT024DNHFWL-Manual-Rev0.2 Page: 17 of 17 6. 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