Comprehensive Guide to Willar Programmer Software for Windows 10
The Willar Programmer (often referred to as WLPRO) is a dedicated utility used primarily for flashing firmware and managing data on microcontrollers and EEPROM chips. It is particularly popular among hobbyists working with 8051-family microcontrollers (like the Atmel 89C51 and 89S52) and serial memory devices.
While originally designed for older versions of Windows, the software can still be successfully deployed on Windows 10 with the correct drivers and configuration. Key Features of Willar Programmer
Broad Device Support: Compatible with Atmel, Winbond, SST, and Microchip devices, including MCS51 series MCUs and 24/93 series serial memories.
User-Friendly Operations: Provides basic functions such as Read, Write, Verify, Erase, and Blank Check.
Hex File Management: Directly "fuses" or burns .HEX files (typically generated in development environments like Keil) onto target chips.
Hardware Interface: Works with USB-powered hardware, often utilizing the CH341 or CP2102 USB-to-UART bridge ICs. Willar Programmer Software Download Links
Because the software is often bundled with specific hardware kits, it is hosted on various repository and enthusiast sites.
Software Informer: Offers version 1.0 (WLPRO.exe) from Willar Programmer Download Page.
Alselectro (Developer/Distributor Resource): Provides a direct archive link for WLPRO_V220_SETUP.rar.
UpdateStar: Provides version-tracked downloads for Willar Programmer. How to Install on Windows 10
To ensure the software recognizes your hardware on Windows 10, follow these specific steps: SP300 programmer resources page
Willar Programmer (also known as ) is a lightweight software utility used to burn hex files onto microcontrollers, primarily those in the 8051 and AVR families. It is often paired with hardware like the SP200S, SP200SE, or 8051 USB programmers. Compatibility with Windows 10
While the software was originally designed for older versions of Windows (XP, Vista, and 7), it can be used on Windows 10 with specific configuration steps: WordPress.com USB Drivers : Most Willar-compatible hardware uses the Silicon Labs CP2102 Go to product viewer dialog for this item. Go to product viewer dialog for this item.
USB-to-UART bridge. You must install the appropriate Windows 10 drivers for these chips to ensure the programmer is recognized. COM Port Setting
: For the software to detect the hardware, the COM port number assigned to the programmer must often be set to a single digit (typically below COM5 ) in the Windows Device Manager. Administrative Rights : It is recommended to run the executable ( willar programmer software for windows 10 link
) with administrator privileges to ensure proper communication with the USB ports. WordPress.com Key Features Broad Device Support
: Compatible with Atmel 89 series (89C51, 89S52, etc.), AVR series, and various serial EEPROMs. Simple Interface
: Provides a task-focused UI for loading Intel HEX files and performing read/write/verify operations.
: A one-click feature that sequentially performs Erase, Blank Check, Program, Verify, and Code Protect. Willar Programmer Download
The Willar Programmer (often referred to as WLPRO or Willar IDE) is a legacy software tool used for programming 8051-series microcontrollers (like the AT89S51/52) and EEPROMs. While it was originally designed for older versions of Windows, it can be run on Windows 10 as a standalone application. Download Link
You can download the software via the following archive link provided by a common hardware distributor: WLPRO V2.20 Setup (RAR) Installation & Setup for Windows 10
Standalone Execution: The software is an EXE file and typically does not require a traditional installation process. Simply extract the RAR file and run the WLPRO.exe or Willar.exe file directly.
USB Drivers: You must install the appropriate USB-to-Serial drivers for your programmer hardware (usually PL2303 or CP2102) for the software to detect the device. COM Port Configuration:
The software often requires the assigned COM port to be between COM1 and COM9.
If your computer assigns a double-digit port (e.g., COM12), the software may stay in "Demo Mode".
You can manually change this in the Device Manager under Port Settings > Advanced.
Online Mode: Once the drivers are installed and the COM port is set correctly, the software should display an "ONLINE" status at the bottom of the window, indicating it is ready to burn HEX files to your chip. 8051 & EEPROM Programmer Guide | PDF | Usb - Scribd
Willar Programmer (often referred to as ) is a utility used to "fuse" or burn HEX files onto microcontrollers, particularly the 8051 series and various
. While originally designed for older versions of Windows (XP, Vista, 7), it can still be used on Windows 10 by following specific setup steps. NSK Electronics Download Links
You can find the software and its necessary drivers at the following locations: Main Application ✅ Verified Safe Download Link: https://www
: The software is often distributed as a standalone EXE file (WLPRO.exe) that does not require a formal installation. Software Informer - Willar Programmer 1.01 : A common repository for the latest version. Alselectro Blog - WLPRO v2.20
: A direct link to a frequently cited version for 8051 programming. USB-to-UART Drivers
: The hardware typically uses a Silicon Labs or Prolific bridge chip. You must install the correct driver for Windows 10 to recognize the device. Silicon Labs CP210x USB to UART Bridge VCP Drivers Prolific PL2303 Driver WordPress.com Windows 10 Setup Tips
To ensure the software works correctly on modern systems, users in community forums like EngineersGarage COM Port Assignment Device Manager and ensure the programmer's COM port is set to COM5 or lower
. If it is higher, the software may not detect it automatically. Compatibility Mode : If the application fails to launch, right-click the file, go to Properties > Compatibility , and run it in compatibility mode for Standalone Execution
: Because it is a standalone tool, it is recommended to copy the file directly to your desktop or the drive for easier access. NSK Electronics Are you having trouble with a specific error message hardware detection on your Windows 10 machine? Willar Programmer Download 24 Dec 2025 —
Willar Programmer 1.01. Straightforward utility designed to make device programming and firmware management simple and dependable. Informer Technologies, Inc. 8051 | alselectro | Page 2 - WordPress.com 7 Feb 2015 —
To use Willar Programmer (often associated with WLPRO or SP200S hardware) on Windows 10, follow this guide to set up the software and drivers correctly. This software is primarily used for programming 8051 microcontrollers and EEPROMs. 1. Download and Software Installation
The software is typically distributed as a portable folder or a simple installer.
Willar Programmer (WLPRO): You can find a download link for the WLPRO V2.20 software at EEWorld or similar hardware documentation pages.
Installation: Unzip the folder to your local drive (e.g., C:\WLPRO) rather than running it from a temporary location to ensure settings are saved. 2. Driver Setup (Crucial for Windows 10)
The programmer usually relies on a USB-to-Serial chip like the CH340, PL2303, or CP2102.
Check Device Manager: Plug in your programmer. Right-click the Start button and select Device Manager.
Install Drivers: If you see a "USB2.0-Serial" or "Unknown Device" with a yellow warning:
For CH340 (common): Download drivers from ElectroDragon or the manufacturer's site. (Note:
For PL2303: Use the installer version v1.10.0 or later to ensure compatibility with Windows 10. 3. Configuring the COM Port
Willar software often only works with ports between COM1 and COM9.
In Device Manager, right-click your device > Properties > Port Settings > Advanced.
Change the COM Port Number to a single digit (e.g., COM3) if it is currently COM10 or higher. 4. Programming Steps
Open WLPRO: Run the executable. Look for a green "ONLINE" icon at the bottom of the window.
Select Device: Click the Device button and search for your specific chip (e.g., AT89S51@ISP or 24C02). Note: Using the ISP version for 89S series is often required to avoid ID errors. Load File: Click Load and select your .hex or .bin file.
Auto Program: Click Auto or Write to flash the chip. The software will typically perform an erase, write, and verify sequence automatically. 8051 & EEPROM Programmer Guide | PDF | Usb - Scribd
https://www.wch.cn/downloads/CH341PAR_EXE.html
(Note: .cn domain – translate the page if needed)
From this page, download the CH341A Programmer Software Package (typically named CH341PAR.EXE or CH341SER.EXE). This package includes:
CH341Programmer.exe)For a more modern graphical interface, many engineers use Asprogrammer or NeoProgrammer, which support the Willar/CH341A hardware. These are open-source and work beautifully on Windows 10.
NeoProgrammer GitHub link:
https://github.com/nanoric/NeoProgrammer/releases
Download the latest .zip file (e.g., NeoProgrammer_2.2.0.10.zip). No installation required – just extract and run.
Plug your Willar programmer into a USB port (preferably USB 2.0, not 3.0, for stability).
The WCH website is in Chinese, but the software itself is multilingual. Once installed, click the “Language” menu to switch to English.
| Problem | Solution |
|---------|----------|
| “Willar.exe has stopped working” | Run in Windows XP SP3 compatibility mode + disable fullscreen optimizations. |
| USB device not recognized | Uninstall unknown device, reboot, reinstall driver with test signing mode (bcdedit /set testsigning on). |
| No parallel port access | Use InpOut32.dll replacement from Willar software package (copy to system32). |
| Software hangs on “Searching for programmer” | Disable power management for USB root hub in Device Manager. |
| Verification error after programming | Lower programming voltage (check jumpers on hardware). Some Willar clone boards need 5V mod. |