Stone STWA121WT-01 Technical Document

STWA121WT-01 Equipment Manual
Release 05/2021 www.stoneitech.com
1
Intelligent TFT-LCD Module
Model
STWA121WT-01
Equipment Manual

STWA121WT-01 Equipment Manual
Release 05/2021 www.stoneitech.com
2
Contents
Preface............................................................................................................3
1 Introduction.................................................................................................5
2 Technical Parameters.................................................................................9
3 Interface Description................................................................................14
4 Coprocessor (optional) ............................................................................15
5 Accessories...............................................................................................17
6 Physical Dimensions................................................................................19
7 Electrical Components.............................................................................20
8 Naming Rule..............................................................................................21
9 International Certification ........................................................................22
APPENDIX ....................................................................................................23
Glossary .......................................................................................................25

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Preface
This equipment manual is part of our Intelligent TFT-LCD Module documentation. It
provides the information in regards of operation, installation, configuration, function,
system as well as its technical design and working principle.
Organization of the manual
The STWA121WT-01 equipment manual is organized into the following chapters:
Chapter
Contents
1
Overview of features and functional scope of the STWA121WT-01
2-4
Technical Parameters, Interface Description, Coprocessor
5-6
Accessories, Physical Dimensions
7-9
Electrical Components, Naming Rule, International Certification
Appendix
ESD Guidelines, Glossary
Customer Online Services
Customer Support offers comprehensive additional information of Intelligent
Products through its Online services as follows:
- Official website: https://www.stone-hmi.com
https://www.stoneitech.com
- Official forum: https://forum.stoneitech.com
- Telephone: [phone]
Other support
In need of technical queries, please contact STONE representatives in the subsidiaries
and branches responsible for your area.

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Preface
Trademarks
STONE registered trademarks are as below:
- STONE
- STONE TECH
- Intelligent HMI
- Intelligent TFT-LCD Module
- Smart TFT-LCD Module
Abbreviations
The abbreviation table in this equipment manual is as below:
LED Light Emitting Diode
CPU Central Processing Unit
ESD Electrostatic Sensitive Device
HMI Human Machine Interface
IF Interface
LCD Liquid Crystal Display
UART Universal Asynchronous Receiver/Transmitter
COM Commercial
DI Data Input
DO Data Output
VIN Voltage Input
GND Ground
TP Touch Panel
A list of all the technical terms together with their explanations is provided in the glossary
at the end of this manual.

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1Introduction
This chapter contains general information of:
- Brief Introduction
- Warranty
- Product Characteristics
- Application Area
- Working principle
- Operation Processing
- Software Operation

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Introduction
1.1 Brief Introduction
The STWA121WT-01 has been used as Equipment TFT dispaly &Touch
controller. It includes processor, control program, TFT driver, flash memory, UART port,
touch screen, power supply etc., and the important is it can supply the Json Code & Hex
Code instruction sets, so that it can be controlled by Any MCU.
The STWA121WT-01 can perform all basic functions, such as Vector font display,
image display, curve display as well as touch function, Video & Audio function etc. The
User Interface can be more abundant and various. And the flash memory can store your
data, configuration files, image file, font file, video file and audio file etc.
1.2 Warranty
The warranty period is 3 Years after delivery. Should there be any technical or quality
problem within the warranty period, we guarantee the product can be replaced by a
brand-new one unconditionally, except human broken.
1.3 Product Characteristics
- With Cortex A8 CPU / 256MB Flash / TFT Driving device
- Controlled by any MCU via Json & Hex Code Instruction
- Display Image / Text / Curve / Video
- 262K (18bit) colour TFT display
- With / without Touch Screen
- RS232 / RS422 / RS485 / TTL UART Interface & USB port Downloading
- Ethernet port / WIFI remote control
- Wide voltage range / Strong Working Temperature
- Easy to use! Powerful function! Saving Much Development cost and time!
1.4 Application Area
Widely used in various industrial field
- Medical & Beauty Equipment
- Engineering Machinery and Vehicle Equipment
- Electronic Instrument
- Industrial Control System
- Electric Power Industry
- Civil Electronic Equipment
- Automation Equipment
- Traffic Field
- New Energy Project
- IOT Applications
Etc.

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Introduction
1.5 Working Principle
The Intelligent TFT-LCD Module communicates with the Customer’s
MCU / CPU / FPGA / PLC via JSON Code and HEX Code Instructions, then the MCU
can control its connected equipment to work according to the received instructions.
Figure 1.3-1 Configuration and process control phase

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Introduction
1.6 Operation Processing
Only 3 steps to operate our TFT-LCD Module:
1) Build a new GUI project by STONE GUI Designer Software.
2) Connect with customer’s MCU through RS232,RS422,RS485,TTL directly, Plug & Play.
3) Write a simple program for MCU to control the TFT-LCD Module via Instruction Sets.
The communication protocol is built with 2 parts:
1）Initiative Instruction - JSON Code (MCUTFT-LCD Module)
Frame header instruction code widget type widget name data Frame tail
ST< {"cmd_code":"set_value","type":"label","widget":"label2","value":5} >ET
2）Passive Instruction - HEX Code (TFT-LCD ModuleMCU)
Frame header CMD LEN DATA Frame tail CRC16
53 54 3C 10 62 00 09 6C 61 62 65 6C 3F A1 47 AE 3E 45 54 6C 8B
More information, please refer to the document of Instruction Sets.

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Introduction
1.7 Software Operation
We will offer a simple & powerful "Stone GUI designer" Software to assist you to design the
new GUI project for TFT-LCD Module basic on Windows system, MacOS system or Linux
system.

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2Technical Parameters
This chapter contains technical data on:
- Physical Parameters:
Physical Parameters
Display
- Hardware Parameters:
Processor
Memory
Interface
Power Supply
- Storage & Test
Electrical Characteristics
Ambient Conditions
Noise Immunity
Radio Interference
-Support Device
Support Device

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Technical Parameters
Physical Parameter
Size
12.1 inch
Resolution
1024×RGB×768
Pixel Spacing
0.1905mm×0.0635mm (H×V)
Color
262,144 colors (18 bit)
Viewing Area
246mm×184.3mm
Display Dimension
288.8mm× 188.1mm
Overall Dimension
279mm×209mm×24.1mm (T)
(Standard type)
279mm×209mm×32.7mm (T)
(with Ethernet port)
Net Weight
1600g(T)
Display
Backlight Type
LED
Brightness
500cd/m2
(Brightness can be adjustable in 100 levels)
Contrast
800:1
Backlight Life
30,000 hours
Viewing Angle
88°/88°/88°/88°(L/R/U/D)
TFT Panel
A class industrial TFT Panel
Touch Screen
4-Wire Resistance Touch Screen
/ Capacitive Touch Screen
/ Without Touch Screen
Screen Mode：
Digital
Processor
CPU
Cortex A8
Refresh Rate
1GHz
Max Frame Rate
60 FPS
Memory
Flash Memory
Standard 256MB
Memory Amount for Image
According to the capability of the image,
Support "jpg, bmp, png, svg, gif" format.

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Technical Parameters
Interface
Serial Interface
RS232 / RS422 / RS485 / TTL level
Ethernet Interface
10M/100M (optional)
Wireless Interface
WIFI (optional)
Project File Downloading
Suggest U Storage Disk or USB2.0 by PC
Power Supply
Rated Voltage
+12V DC
Permissible Voltage Range
+9V DC...+28V DC
Max. Permissible Transients
+28V
Time between Two Transients
50 sec minimum
Internal Fuse
2A self-recovery fuse
Rated Power
3.0W
Recommended Power Supply
12V, 2A
Electrical Characteristics
Parameter
Condition
Min
Type
Max
Supply Current
VIN=12V
(Max brightness)
370mA
VIN=12V
(close brightness)
190mA
Baud Rate
Default
115200 bps
Static Discharge
EN 61000-4-2
Contact Discharge/Air Discharge
6 kV/8 kV

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Technical Parameters
Ambient Conditions
Max. Permissible Ambient Temperature
Operation
Storage
-30℃～ +80℃
-40℃～ +85℃
Relative Humidity
Operation
Storage
55℃,85%
60℃,90%
Shock Loading
Operation
Storage
15 g/11 msec
25 g/6 msec
Vibration
Operation
Storage
0.035 mm (10 - 58 Hz)/ 1 g (58 - 500 Hz)
3.5 mm (5 - 8,5 Hz)/ 1 g (8.5 - 500 Hz)
Barometric Pressure
Operation
Storage
706 to 1030 hPa
581 to 1030 hPa
Noise Immunity
RF Irradiation
EN 61000-4-3
10 V/m, 80% AM
1 kHz
Pulse Modulation
ENV 50204
900 MHz ±5 MHz
10 V/meff., 50% ED, 200 Hz
RF Conduction
EN 61000-4-6
150 kHz - 80 MHz
10 V, 80% AM, 1 kHz
Burst Interference
Supply Lines
Process Data Lines
Signal Lines
EN 61000-4-4
2kV
2kV
1kV
Radio Interference
Radio Interference Level Complying to
EN 55011
Class A

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Technical Parameters
Support Device
UART Port
Support
RS232 / RS422 / RS485 / TTL
Network Port
Support(optional)
Ethernet Port / WIFI
Flash Memory
Support
Standard 256MB
Buzzer
Support
RTC
Support
USB Type A Port
Support
Online Download By USB Cable
U Storage Disk Interface
Support
Offline Download or Copy User Data
Touch Screen
4 Wire Resistance / Capacitive Touch Screen
Coprocessor
Support(optional)
STM32F103C8T6 MCU Chip
Vector Font
Support
Standard ttf Format of Computer
Image
Support
jpg/bmp/png/svg/gif Format
Video Interface
Support
avi / mp4 Format
Audio Interface
Support
wav / mp3 Format
Instruction Set
Unified Simplified Instruction Sets

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3Interface Description
This chapter contains the description of the interfaces:
- VIN
- NC
- DO
- DI
- GND
Communication Interface Definition：
I: Input O: Output P: Power
Option
Pin Name
Pin NO.
Pin Type
Interpret
RS232/
TTL
GND
1,2
P
Power Ground
DI
4
I
Data Input
DO
5,
O
Data Output
NC
3,6
None
VIN
7,8
P
Power Supply Input
RS485
GND
1,2
P
Power Ground
A
5
I/O
RS485 A
B
6
I/O
RS485 B
VIN
7,8
P
Power Supply Input
RS422
GND
1,2
P
Power Ground
RXN
3
I
Data Input -
RXP
4
I
Data Input +
TXP
5
O
Data Output +
TXN
6
O
Data Output -
VIN
7,8
P
Power Supply Input
Note A: 1. Adopting the 8 Pin 2mm spacing socket. Model Code: A2008WR-S-8P.
2. Direction of the signal was defined with TFT-LCD Module;
“I” refers to the signal from the user’s MCU transmitted to the TFT-LCD Module.
“O” refers to the signal from the TFT-LCD Module transmitted to the user’s MCU.
3. Pins with the same definition are connected together in the module inside.
4. RS232, TTL, RS422, RS485, port can be default which need to point out in the order.
Note B: The selection of Baud rate for the serial interface：
Baud rate
（bps）
1200
2400
4800
9600
19200
38600
57600
115200
921600
1500000
Serial Port Defind:
Note A: RS232 area connect, TTL area disconnect.
TTL area connect, RS232 area disconnect.
Note B: The resistance are 0 Ωwith 0402 standard package.
Note C: The welding pad of STWI035WT-01 is on the back of the PCB,
and the black frame needs to be removed .

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4Coprocessor (optional)
This chapter contains the description of the functions:
- STM32F103C8T6 MCU Chip
- Instruction Transparent Transmission
- Instruction Translation
- RS485 Bus
- CAN Bus

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5Accessories
This chapter contains the accessories:
- Double 8-pin Connect Cable
- 8-pin Socket
- Type A USB Cable
- Converter: USB ⇌RS232 / RS422 / RS485 / TTL
- IP65 Plastic Box (optional)
- Metal Bezel (optional)
Accessory Name
Model
Note
Picture
Double 8-pinCable
L8
Optional：
10cm/20cm/35cm/65cm
8-pin Socket
S8
SMD-8 2.0mm with Lock
Model:A2008WR-S-8P
Type A USB Cable
LU
Double USB Port Cable
Online Downloading
Converter
UR2.0
UR4.0
UR1.0
USB to RS232
USB to RS422 / RS485
USB to TTL
U Storage Disk
Offline USB Batch
Downloading Function

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Accessory Name
Model
Note
Picture
IP65 Plastic Box
(optional)
IP65-043
IP65-050
IP65-056
IP65-070
IP65-080
IP65-101
For: 4.3”, 5”, 5.6”, 7”,
8”,10.1”
Metal Bezel
(optional)
MB-035
MB-043
MB-050
MB-056
MB-070
MB-080
MB-101
MB-104
For: 3.5”, 4.3”, 5”, 5.6”,
7”, 8”,10.1”,10.4”
Colour: Silver & Black

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6Physical Dimensions
This chapter contains the information of Physical Dimensions.
Figure 6-1 STWA121WT-01 dimension

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7Electrical Components
This chapter contains the brands of the components:
- TFT Panel
- Touch Screen
- CPU
- LCD Controller
- Flash memory
- Connecter
- Capacitance
- IC