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LMT024DNHFWL-NAN
LCD Module User Manual
Prepared by:
Checked by:
Approved by:
Chen Rili
Date: 2017-11-27
Date:
Date:
Rev. Descriptions
Release Date
0.1
Preliminary New release
2017-09-27
0.2
Updata range of Logic Voltage
2017-11-27
URL: www.topwaydisplay.com
Document Name: LMT024DNHFWL-NAN-Manual-Rev0.2
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LCD Module User Manual
LMT024DNHFWL-NAN
Table of Content
1. Basic Specifications .............................................................................................................. 3
1.1 Block Diagram ............................................................................................................................................................. 3
1.2 Terminal Functions ...................................................................................................................................................... 4
2. Absolute Maximum Ratings .................................................................................................. 5
3. Electrical Characteristics ...................................................................................................... 5
3.1 DC Characteristics ...................................................................................................................................................... 5
3.2 AC Characteristics ...................................................................................................................................................... 6
3.3 Backlight Control Timing ............................................................................................................................................ 7
4. Functions ............................................................................................................................... 8
4.1 Display Commands ..................................................................................................................................................... 8
4.2 Power off the LCD Module ........................................................................................................................................ 12
4.3 Refreshing The LCD Module ..................................................................................................................................... 12
5. Optical Characteristics ........................................................................................................ 13
6. Design and Handling Precaution ........................................................................................ 15
URL: www.topwaydisplay.com
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1. Basic Specifications
Screen Size(Diagonal) :
2.4”
Color Depth:
262k color
Number of dots :
320 x 240(RGB)
Active Area :
48.96 x 36.72 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 :
9H (*1) (gray scale inverse)
3H (*2)
Polarizer Surface Treatment:
Glare Type (3H)
Backlight Type:
LEDs
Outline Dimension :
71.5 x 49.1 x 7.70MAX mm
Operating Temperature :
-20 ~ +70°C (No Condensation)
Storage Temperature :
-30 ~ +80°C (No Condensation)
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
BLEN
Backlight Circuit
TFT Panel
320 × 240(RGB)
VDD
VSS
/WR,/RD,D0~D7
ILI9341 or equivalent
D/C,/CS, /RES, FMARK
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1.2 Terminal Functions
Pin No.
PIN Name
I/O
Descriptions
1
VSS
Power
Negative power supply ,0V
2
VSS
Power
3
BLEN
Input
Backlight control.Program dimming levels by driving pin with digital
pulses.
4
VDD
Power
Positive power supply
5
VDD
Power
6
/RD
Input
Read enable input, active LOW
7
/WR
Input
Write enable input, active LOW
Register Select Signal:
8
D/C
Input
D/C = H, Transferring the Display Data
D/C = L, Transferring the Control Data
Chip Select Signal:
9
/CS
Input
/CS=L, enable access to the LCD module
/CS=H, disable access to the LCD module
10
D0
I/O
:
:
I/O
Data Bus
17
D7
I/O
Reset Signal:
18
/RES
Input
/RES = L, Initialization is executed
/RES = H, Normal running
19
FMARK
Output
Displaying timing frame signal
20
NC
-
:
:
:
NC
28
NC
-
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LCD Module User Manual
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2. Absolute Maximum Ratings
Items
Symbol
Min.
Max.
Unit
Condition
Supply Voltage
VDD
-0.3
+6.0
V
VSS = 0V
Input Voltage
/RES, /WR,/RD
D0~D7,D/C,/CS
-0.3
3.3
V
VSS = 0V
Operating Temperature
T OP
-20
+70
 C
-
Storage Temperature
T ST
-30
+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
VDD=5.0V ,VSS=0V, T OP =25  C
Items
Symbol
MIN.
TYP.
MAX.
Unit Application Pin
Supply Voltage
VDD
4.7
5.0
5.3
V
VDD
Input High Voltage
V IH
2.1
-
3.0
V
/RES, /CS, D/C,
Input Low Voltage
V IL
-
-
0.9
V
D0~D7,/WR,/RD
Output High Voltage
V OH
2.4
-
3.0
V
Output Low Voltage
V OL
-
-
0.6
V
D0~D7,FMARK
I DD
-
66.8
95
mA Backlight are ON
Operating Current
I DD
-
5.9
15
mA
Backlight are
OFF
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3.2 AC Characteristics
3.2.1 8080 Mode System Bus Timing
VDD=5.0V,VSS=0V, T OP =25  C
Signal
Symbol Parameter
min max
unit
description
D/C
tast
Address setup time
0
-
ns
taht
Address hold time(write/read)
13
-
ns
tchw
“S””H” Pulse Widtch
0
-
ns
tcs
Chip select setup time(write)
20
-
ns
/CS
trcs
Chip select setup time(read ID)
60
-
ns
trcsfm
Chip select setup time(read FM)
462
-
ns
tcsf
Chip select wait time(write /read)
13
-
ns
twc
Write cycle
86
-
ns
/WR
twrh
Control pulse H duration
20
-
ns
twrl
Control pulse L duration
20
ns
trc
Read cycle(ID)
208
-
ns
/RD(ID)
trdh
Control pulse H duration(ID)
117
-
ns
When read ID
data
trdl
Control pulse H duration(ID)
60
-
ns
trcfm
Read cycle(FM)
585
-
ns
/RD(FM)
trdhfm Control pulse H duration(FM)
117
-
ns
When read from
Frame memory
trdlfm
Control pulse H duration(FM)
462
-
ns
tdst
Data setup time
13
-
ns
For maximum
tdht
Data hold time
13
-
ns
CL=30pF
D[7:0]
trat
Read access time(ID)
-
28
ns
For minimum
tratfm
Read access time(FM)
-
238
ns
CL=8pF
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
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3.2.2 Reset Timing
VDD=5.0V,VSS=0V, T OP =25  C
Item
Symbol
MIN.
TYP.
MAX.
Unit
Reset LOW pulse width
T RW
13
-
-
us
Reset time
T RT
-
-
85
ms
3.3 Backlight Control Timing
VDD=5.0V,VSS=0V, T OP =25  C
Signal Symbol
Parameter
Spec.
Unit
Description
Min TYP. MAX.
T HI
Time Delay between Steps
2
-
-
us
BLEN
T LO
CTRL LOW Time for Diming
1
-
250
us
H:3.0
L:0V
T SD
CTRL LOW ,shutdown Pulse
-
ms
Width
2
-
Note:for basic ON/OFF function,please beware of minimum pulse width.
Register BLEN timing
URL: www.topwaydisplay.com
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4. Functions
4.1 Display Commands
URL: www.topwaydisplay.com
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Note: Please refer to ILITEK ILI9341 data sheet for more details.
4.2 Power off the LCD Module
It recommends that enter Sleep Mode before power off the LCD module.
4.3 Refreshing The LCD Module
It recommends that the operating modes and display contents be refreshed periodically to prevent
the effect of unexpected noise.
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5. Optical Characteristics
Item
Symbol
Min.
Typ.
Max.
Unit
Note/ Condition
Brightness
Bp
180
200
-
Cd/m 2
Uniformity
△ Bp
-
80%
-
-
θ =0°, Φ =0° (*1,*2)
θ T( Ф =90°)
60
70
-
Deg
θ B( Ф =270° )
50
60
-
Deg
Viewing Angle
(*3)
θ L( Ф =180°)
60
70
-
Deg
θ R( Ф =0° )
60
70
-
Deg
Contrast Ratio
Cr
400
500
-
-
θ =0°
Response Time
T ON
-
20
30
ms
θ =0°, Φ =0° (*1,*5)
T OFF
X
0.236
0.286
0.336
White
Y
0.261
0.311
0.361
X
0.530
0.580
0.630
Red
Color of CIE
Y
0.270
0.320
0.370
Coordinate
X
0.288
0.338
0.388
θ =0°, Φ =0° (*1, *6)
Green
Y
0.531
0.581
0.631
X
0.101
0.151
0.201
Blue
Y
0.048
0.098
0.148
NTSC Ratio
S
-
53%
-
-
θ =0°, Φ =0° (*1, *6)
Test Conditions:
1. VDD=5.0V,LI=60mA(Backlight current), the ambient temperature is 25 ℃
2. The test systems refer to *1 and *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)
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*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):
Luminance When LCD is at “White” state
Contrast Ratio(CR)=
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.
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*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
area of NTSC triangle
x100%
6. Design and Handling Precaution
Please refer to "LCD-Module-Design-Handling-Precaution.pdf".
URL: www.topwaydisplay.com
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