Home Products Smart Display CAN Smart Display WLEP02566400DGAAASA00

3.55" CAN Bus CANopen 256x64 OLED Smart Display with Capacitive Touchscreen

Model No. WLEP02566400DGAAASA00

►OLED Size: 3.55"
►OLED Resolution: 256×64 dots
►OLED Touch Screen: Capacitive Touch Panel
►Communication Interface: CAN bus
►Protocol: CANopen


WLEP02566400DGAAASA00 model is a 3.55-inch Smart Display CAN series OLED display that is running CANopen protocol via CAN bus command to render display content on the screen and return touch event data with protocol objects. This 3.55" OLED Smart Display CAN series is an easy-to-use product that allows customers to create their UI without writing a line of code cost-effectively. This model is integrated with a standard 256x64 pixel touch OLED module and a 4-layers PCBA with built-in firmware code developed by the WINSTAR RD team.

WINSTAR already developed Windows Apps (GUI & GUI Builder) for Smart Display GUI design. This 3.55" Smart OLED Display can use a computer with USB2CAN dongle or Raspberry Pi (+PiCAN2) or even an MCU scale like Arduino(+CAN adaptor) as a HOST platform. WINSTAR GUI builder software is designed for customers to simulate their UI design in advance using the drag-and-drop Widget preview function. Furthermore, customers can create their ideal UI objects using this software and then go through simulation to check UI design without hardware module. WINSTAR GUI builder software only supports the Windows system; it can fulfill What You See Is What You Get (WYSIWYG).

Smart Display products are designed with STMicroelectronics' (ST) controller which supports ST development tools like TouchGFX and STM32CubeIDE. You can also use ST tools to design WINSTAR Smart Display modules besides GUI builder.

  • TouchGFX: An advanced free-of-charge graphic software framework optimized for STM32 microcontrollers.
  • STM32CubeIDE: An advanced C/C++ development platform with peripheral configuration, code generation, code compilation, and debug features for STM32 microcontrollers and microprocessors.
  • STM32CubeMX: A graphical tool that allows a very easy configuration of STM32 microcontrollers, as well as the generation of the corresponding initialization C code for the Arm® Cortex®-M core or a partial Linux® Device Tree for Arm® Cortex®-A core, through a step-by-step process.
  • STM32CubeProg: An all-in-one multi-OS software tool for programming STM32 products. It provides an easy-to-use and efficient environment for reading, writing and verifying device memory through both the debug interface (JTAG and SWD) and the bootloader interface (UART, USB DFU, I2C, SPI, and CAN).

We’ve also pushed the sample code on Github for your ST platform design reference: ► Link to Github

There are many essential features and functions for this newly released SmartDisplay OLED 3.55", an OLED type display with 256x64 resolution. as below:

  • DC 5V working voltage.
  • Power-On Self-Test & Splash screen.
  • CAN bus Interface.
  • Supports CANopen protocol, default baud rate at 250KB.
  • Built in flash memory, store the font and Object Dictionary Data.
  • Supports PCAP touch screen.
  • CAN Smart Display is defined as a slave device, which is controlled by master device via CAN bus command to render display content on the display screen and return touch event data with protocol objects.
  • Built-in Buzzer is controlled from master device.
  • Design the UI without writing a line of code by WINSTAR GUI builder! (Link to GUI Builder Introduction)
  • Designed with STM32F series MCU and Support STMicroelectronics' (ST) software development tools.

Try before you buy! Contact us to download WINSTAR GUI Builder application.

We also provide demo set with all needed accessories for you to realize your GUI design on displays.
We also provide demo set with all needed accessories for you to realize your GUI design on displays.


3.55 inch  CAN Bus CANopen Smart OLED, 256x64 OLED Smart Display with Capacitive Touchscreen - WLEP02566400DGAAASA00


General Specifications

Item Standard Value Unit
Operating voltage 5 Vdc
Communication Interface CAN bus differential ± 3.3 Vpp
Flash Memory 16 MB
SDRAM Frequency 108 MHz
Size 3.55 inch
Dot Matrix 256 × 64 pixel
Module dimension 157.0(W) × 40.0(H) × 11.45(D) mm
Active area 95.04 × 53.856 mm
Dot pitch 0.342 × 0.333 mm
Backlight Type OLED, White color, Passive Matrix
Drive Duty 1/64 Duty
Gray Scale 4 bits
With /Without TP With Capacitive Touch Panel
Surface Glare

Absolute Maximum Ratings

Item Symbol Min Typ Max Unit
Operating Temperature TOP -20 +70
Storage Temperature TST -30 +80

Electrical Characteristics

Item Symbol Condition Min Typ Max Unit
Supply Voltage +5V 4.4 5 5.6 V
Supply Product current I (mA) 355 425 500 mA


Item Description
LCM WEO025664DWPP3D00000
PCBA SV102566400DA00N0100

Interface Pin Function

CON1 definition:

Pin Symbol Function Remark
1 +5V Power supply 5V input Input
2 DGND Reserved Output
3 GND Power supply GND input Input
4 D- Reserved I/O
5 CAN High CAN bus D+ I/O
6 D+ Reserved I/O
7 CAN Low CAN bus D- I/O
8 +5V Reserved Output
9 DGND Reserved Output
10 NC Reserved  
11 DGND Reserved Output
12 NC Reserved  
13 NC Reserved  
14 NC Reserved  
15 NC Reserved  
16 NC Reserved  

CON2 definition:

Pin Symbol Function Remark
1 NC Reserved  
2 VDD3V   Input
3 NC Reserved  
5 NC Reserved  
6 GND    
7 NC Reserved  
8 TAG_SWDI    
9 NC Reserved  
10 NRST    
11 NC Reserved  
12 TAG_SWDO    
13 DGND    
14 DGND    
15 +5V   Input
16 NC Reserved  
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