HMT035ATA-1C
LCD Module User Manual
Prepared by:
Checked by:
Approved by:
LU
Date: 2018-03-21
Date:
Date:
Rev. Descriptions
Release Date
0.1
- Preliminary Draft release
2018-03-21
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Document Name: HMT035ATA-1C
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TOPWAY
LCD Module User Manual
HMT035ATA-1C
Table of Content
1
Basic Specification ..................................................................................................................................... 3
1.1
General Specification ............................................................................................................................ 3
1.2
Block Diagram ...................................................................................................................................... 3
1.3
Terminal Function ................................................................................................................................. 4
2
Absolute Maximum Ratings....................................................................................................................... 4
3
Electrical Characteristics ........................................................................................................................... 5
3.1
DC Characteristics ................................................................................................................................ 5
3.2
AC Characteristics ................................................................................................................................ 5
4
Function Specifications ............................................................................................................................. 6
4.1
Basic Operation Function Descriptions ................................................................................................ 6
4.2
Quick Start Guide ................................................................................................................................. 7
4.3
Command Descriptions ........................................................................................................................ 7
5
Optical Characteristics ............................................................................................................................... 8
6
Touch panel Design Precautions ............................................................................................................ 10
7
Precautions of using LCD Modules ........................................................................................................ 11
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TOPWAY
LCD Module User Manual
HMT035ATA-1C
1 Basic Specification
TOPWAY HMT035ATA-1C is a Smart TFT Module with 32bit MCU on board. Its graphics engine
provides numbers of outstanding features. It supports TOPWAY TML 3.0 for preload and pre-design
display interface that simplify the host operation and development time. Suitable for industry control,
instrumentation, medical electronics, power electric equipment applications.
1.1 General Specification
Screen Size(Diagonal) :
3.5”
Resolution :
320(RGB) x 240
Color Depth :
65k color (16bit)
Pixel Configuration :
RGB Stripe
Display Mode :
Transmissive / Normal White
Viewing Direction :
6H (*1) (gray-scale inverse)
12H (*2)
Outline Dimension :
93.0 x 70.1 x 13.8 (max)(mm)
(see attached drawing for details)
Active Area :
70.08 x 52.56 (mm)
Backlight :
LED
Surface Treatment :
Glare Treatment (Anti-UV)
Command I/F:
RS-232C
Project Download:
by PC or by U-Drive (with OTG cable)
Operating Temperature :
-20 ~ +70°C
Storage Temperature :
-30 ~ +80°C
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.
*4. When using the U-Drive to download project requires short hop JP3, JP4 and disconnect JP1, JP2.
1.2 Block Diagram
Touch Panel
3.5 TFT
320 x 240 pixels
K1,K2
RTS(BUSY)
TX, RX
Display Function Controller
VDD, GND
with RTC
K3
ID, D-, D+
Flash
Memory
RAM
VUSB, GND
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TOPWAY
LCD Module User Manual
HMT035ATA-1C
1.3 Terminal Function
RS232 Interface Terminal (K1,K2)
Pin No.
Pin Name
I/O Descriptions
1,2,3
VDD
P
Power supply (5.0 V)
4
NC
--
No connection, leave open
5
RX
I
Data Input
(eg. to PC’s RS-232C pin3 <9pin D-connector>)
6
TX
O
Data output (eg. to PC’s RS-232C pin2 <9pin D-connector>)
7
RTS(BUSY)
O
Request To Send (could function as busy BUSY signal)
(eg. to PC’s RS-232C pin2 <9pin D-connector>)
8,9,10
GND
P
Ground, (0V)
Note.
*1. User data and commands transfer through this terminal.
*2. HOST using command hand shake during communication is suggested.
USB Interface Terminal (K3)
Pin No.
Pin Name
I/O Descriptions
1
VUSB
P
Power supply
2
D-
I/O USB DATA negative signal
3
D+
I/O USB DATA positive signal
4
ID
I
USB_ID, 1:Client, 0:HOST
5
GND
P
Ground, (0V)
Note.
*1. TML files and image files preload through this terminal
*2. Standard “USB-drive” functions provided
*3. During the files transfer, all others display functions will be suspended
2 Absolute Maximum Ratings
Items
Symbol
Min.
Max.
Unit
Condition
Power Supply voltage
V dd
-0.3
5.5
V
Operating Temperature
T OP
-20
70
 C
No Condensation
Storage Temperature
T ST
-30
80
 C
No Condensation
Note:
*1. This rating applies to all parts of the module and should not be exceeded.
*2. The operating temperature only guarantees operation of the circuit. The contrast, response speed,
and the other specification related to electro-optical display quality is determined at the room temperature, T OP =25 ℃
*3. Ambient temperature when the backlight is lit (reference value)
*4. 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.
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TOPWAY
LCD Module User Manual
HMT035ATA-1C
3 Electrical Characteristics
3.1 DC Characteristics
GND=0V, T OP =25  C
Items
Symbol
MIN.
TYP.
MAX.
Unit Applicable Pin/FUNC
Operating Voltage
V dd
4.8
5.0
5.2
V
VDD
RxD Input MARK(1)
V RxDM
-3.0
-
-15.0
V
Rx
RxD Input SPACE(0)
V RXDS
+3.0
-
+15.0
V
Rx
TxD Output MARK(1)
V TXDM
-3.0
-
-15.0
V
Tx
TxD Output SPACE(0)
V TXDS
+3.0
-
+15.0
V
Tx
Operating Current
I DD
-
300
600
mA
VDD (*1)
Operating Current (USB)
I VUSB
-
210
420
mA
VUSB
Battery Supply Current
I BAT
-
0.6
-
uA
Note.
*1. Normal display condition
3.2 AC Characteristics
Items
Value
Start bit
1
Data bit
8
Parity bit
None
Stop bit
1
Baud Rate(*1)
115200
Serial Data Flow Control
RTS(Busy)
Note.
*1.Baud Rate (1200bps ～ 115200bps) could be adjusted by software config.
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TOPWAY
LCD Module User Manual
HMT035ATA-1C
4 Function Specifications
4.1 Basic Operation Function Descriptions
HMT035ATA-1C
Touch Panel
TML files
Picture files
ICONS files
Custom
Memories
TFT Display
HOST
PC
VP variables
Control and Draw Engine
- TML files, Picture files, ICON files are stored inside FLASH memory area.
They are preloaded to HMT035ATA-1C for stand alone interface use.
- Those files are preloaded via USB interface as an USB drive.
- All the interface flow and the touch response are based on the preloaded TML files
- VP variables memory is inside RAM area,
it provides real time access via UART by the HOST or display onto the TFT by TML file.
- Custom Memories are inside FLASH memory area
It can be accessed via UART interface by the HOST.
- Control and Draw Engine executes HOST commands and response respectively
- It also reports the real time Touch Key number to the HOST
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TOPWAY
LCD Module User Manual
HMT035ATA-1C
4.2 Quick Start Guide
1.
Install TOPWAY
Graphics Editor
Import pictures
2. design UI flow
3.
Download to
Smart LCD
4. power on &
display
Connect to
5.
host Show
real time
data
4.3 Command Descriptions
Please refer to “SMART LCD Command Manual ”
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LCD Module User Manual
HMT035ATA-1C
5 Optical Characteristics
Note ： The parameter is slightly changed by temperature, driving voltage and materiel.
Note 1:
Note 2:
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LCD Module User Manual
HMT035ATA-1C
The data are measured after LEDs are turned on for 5 minutes. LCM The luminance uniformity is calculated by using following formula.
displays full white. The brightness is the average value of 9
△ Bp = Bp (Min.) / Bp (Max.)×100 (%)
measured spots. Measurement equipment PR-705 (Φ8mm)
Bp (Max.) = Maximum brightness in 9 measured spots
Measuring condition:
- Measuring surroundings: Dark room
Bp (Min.) = Minimum brightness in 9 measured spots .
- Measuring temperature: Ta=25 ℃ .
- Adjust operating voltage to get optimum contrast at the
center of the display.
Measured value at the center point of LCD panel after more than 5
minutes while backlight turning on.
Note 3:
Note 4:
The definition of viewing angle:
The definition of contrast ratio (Test LCM using PR-705):
Refer to the graph below marked by θ and Ф
Luminance When LCD is at “White”
Contrast
state
Ratio(CR)=
Luminance When LCD is at “Black” state
(Contrast Ratio is measured in optimum common electrode
voltage)
Note 5:
Note 6:
Definition of Response time. (Test LCD using DMS501):
Definition of Color of CIE Coordinate and NTSC Ratio.
The output signals of photo detector are measured
when the input signals are changed from
Color gamut:
“black” to “white”(falling time)
Area of RGB triangle
and from “white” to “black”(rising time), respectively.
S=
X100%
Area of NTSC triangle
The response time is defined as
the time interval between the 10% and 90% of amplitudes.Refer to
figure as below.
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TOPWAY
LCD Module User Manual
HMT035ATA-1C
6 Touch panel Design Precautions
1. It should prevent front case
touching the touch panel
Active Area (A.A.) to prevent
abnormal touch.
It should left gab (e.g.
0.2~0.3mm) in between.
2. Outer case design should take care about the area outside the A.A.
Those areas contain circuit wires which is having different thickness. Touching those areas could de-
form the ITO film. As a result case the ITO cold be damaged and shorten its lifetime.
It is suggested to protect those areas with gasket (between the front case and the touch panel).
The suggested figures are B≥0.50mm; C≥0.50mm 。
3. The front case side wall should keep space
(e.g. 0.2 ~ 0.3mm) from the touch panel.
4. In general design,
touch panel V.A. should be bigger than the LCD V.A.
and touch panel A.A. should be bigger than the LCD A.A.
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LCD Module User Manual
HMT035ATA-1C
7 Precautions of using LCD Modules
Please refer to " LCD-Module-Design-Handling-Precaution.pdf ".
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