Lattice Radiant Software

Best in Class, Easy to Use Design Software

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Full Featured, Easy to Use Tool Suite - Lattice Radiant software offers all the best in class tools and features to help users develop their FPGA applications efficiently and effectively. Powerful yet intuitive tools provide fast design starts and precise implementation.

Predictable Design Convergence - Powerful optimization and analysis tool help achieve fast and predictable design convergence. Lattice Radiant software utilizes a unified design database, design constraints flow, and timing analysis throughout the flow to ensure consistent optimization and analysis with optimal results.

Unparalleled Ease of Use - To provide the best user experience, Lattice Radiant software brings the ease of use of an FPGA design software to a whole new level with a graphical user interface that is modular and wizard driven, and intuitively guides the user through the design flow that includes design creation, synthesis, constraint entry, design analysis, debugging, and programming.

Features

  • Easy design navigation and debugging with “One Click” execution
  • Powerful optimization tools that feature best in class algorithms to ensure quick timing closure
  • Precise analysis tools for design, timing, and power analysis
  • Complete closed-loop cross probing from physical to logical design implementation
  • IP packaging capability allows users and IP providers to package encrypted IP for distribution

Getting Started

  1. Download Software below - Windows / Linux
  2. Install: follow the installation guide, found in Documents section below.
  3. License: determine which license type you need, then request it on our licensing page via the button below.

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Base & Update Downloads

Windows OSWindows

The Lattice Radiant Software Base executable contains all of the design tools and features for you to use Lattice FPGAs from design entry to bitstream download. The supported Windows Operating System is Windows 11 64-bit.

Lattice Radiant Software 2026.1 Installation Instructions for Windows

  • Close all applications before starting Radiant software installation.
  • After downloading the installer ZIP file, extract the contents to a local folder. Right-click the ZIP file and select Extract All.
  • When prompted, accept the default extraction location and click Extract.
  • Navigate to the extracted folder and double-click 2026.1.0.37.0_Radiant.exe to launch the installer.
  • A loading screen will open and after some time, the installer splash screen will appear.
  • For more details, refer to the Lattice Radiant Software 2026.1 Installation Guide for Windows

Lattice Radiant Software 2026.1 Uninstallation Instructions for Windows

  • To uninstall Radiant 2026.1 or 2026.1 standalone tools (such as Reveal Analyzer, Programmer, or Power Calculator), navigate to the installation directory and run uninstaller.exe.
Package Operating System Version Date Format Size
Lattice Radiant Software Windows 64-bit 2026.1 06/26/2026 ZIP 3.70 GB

Linux OSLinux

The Lattice Radiant Software Base executable contains all of the design tools and features for you to use Lattice FPGAs from design entry to bitstream download. The supported Linux Operating Systems are Red Hat Enterprise Linux 8.10 64-bit, Red Hat Enterprise Linux 9.6 64-bit and Ubuntu 22.04 and 24.04 LTS 64-bit.

Package Operating System Version Date Format Size
Lattice Radiant Software Linux 64-bit 2026.1 06/26/2026 ZIP 6.40 GB

 

To download old versions of Radiant, please visit the Software Archive page.

Software Downloads & Documentation

Quick Reference
Technical Resources
Information Resources
Downloads
TITLE NUMBER VERSION DATE FORMAT SIZE
Select All
Lattice Radiant Software Design Flow Overview for Intel Quartus Users
FPGA-UG-02151 1.1 5/3/2022 PDF 2.3 MB
Lattice Licensing User Guide for Linux
1.3 10/9/2025 PDF 2.8 MB
Lattice Licensing User Guide for Windows
1.3 10/9/2025 PDF 4.7 MB
Lattice Radiant Software Design Flow Overview for Xilinx Vivado Users
FPGA-UG-02165 1.0 7/7/2022 PDF 2.6 MB
Migrating iCEcube2 iCE40 UltraPlus Designs to Lattice Radiant Software
2.2 11/12/2020 PDF 1.3 MB
Lattice Memory Mapped Interface (LMMI) and Lattice Interrupt Interface (LINTR) User Guide
FPGA-UG-02039 1.2 5/31/2022 PDF 1.7 MB
High Reliability & Functional Safety for FPGAs with Synplify & Radiant
WP0036 1.0 3/25/2024 PDF 2.3 MB
TITLE NUMBER VERSION DATE FORMAT SIZE
Select All
Multi-Corner Timing Analysis for Lattice Nexus Devices
FPGA-AN-02063 1.0 3/31/2023 PDF 777.6 KB
QuestaSim Lattice Edition Usage Guidelines and Tips
FPGA-AN-02053 1.1 2/5/2025 PDF 1.7 MB
Migrating Designs from AMD ISE Design Suite to Lattice Radiant Software
FPGA-AN-02087 1.0 3/17/2024 PDF 809.3 KB
Migrating Designs from AMD CPLD/FPGA Devices to Lattice FPGA Devices
FPGA-AN-02081 1.1 8/27/2024 PDF 2.6 MB
Timing Constraints Methodology for Source-Synchronous Interfaces
FPGA-AN-02078 1.0 1/30/2024 PDF 870.9 KB
Interactive Timing Analysis Using TCL in Lattice Radiant Design Software
FPGA-AN-02091 1.0 7/30/2024 PDF 434.7 KB
Programming and Debugging Mixed Platform Devices
FPGA-AN-02061 1.0 3/28/2023 PDF 607.9 KB
Lattice Radiant Timing Constraints Methodology
FPGA-AN-02059 1.5 7/28/2024 PDF 1.9 MB
Third-Party Simulation Tools Usage Guidelines and Tips
FPGA-AN-02084 1.1 7/22/2024 PDF 910.1 KB
Timing Closure Techniques for Mid-Size FPGAs
FPGA-AN-02074 1.1 4/24/2025 PDF 1.8 MB
Scripting Lattice FPGA Build Flow
FPGA-AN-02073 1.0 10/31/2023 PDF 1.2 MB
Debugging with Reveal Usage Guidelines and Tips
FPGA-AN-02060 1.1 5/1/2024 PDF 1.2 MB
Analyzing Designs Using Lattice Radiant Software Tools
FPGA-AN-02080 1.0 2/27/2024 PDF 843.3 KB
Global Set/Reset Usage for Nexus Platform
FPGA-AN-02062 1.0 9/4/2023 PDF 1.6 MB
JESD204B Driver API Reference
FPGA-TN-02412 1.1 12/11/2025 PDF 494.3 KB
Lattice Radiant Constraints Propagation Engine
FPGA-AN-02097 1.0 2/12/2025 PDF 648.3 KB
TITLE NUMBER VERSION DATE FORMAT SIZE
Select All
Lattice Radiant Software 2026.1 Installation Guide for Linux/Ubuntu
2026.1 6/26/2026 PDF 892.2 KB
Lattice Radiant Software 2026.1 Installation Guide for Windows
2026.1 6/26/2026 PDF 2.8 MB
TITLE NUMBER VERSION DATE FORMAT SIZE
Select All
Lattice Radiant Software Design Flow Overview for Intel Quartus Users
FPGA-UG-02151 1.1 5/3/2022 PDF 2.3 MB
Lattice Licensing User Guide for Linux
1.3 10/9/2025 PDF 2.8 MB
Lattice Licensing User Guide for Windows
1.3 10/9/2025 PDF 4.7 MB
Lattice Radiant Software Design Flow Overview for Xilinx Vivado Users
FPGA-UG-02165 1.0 7/7/2022 PDF 2.6 MB
Migrating iCEcube2 iCE40 UltraPlus Designs to Lattice Radiant Software
2.2 11/12/2020 PDF 1.3 MB
Reveal User Guide for Radiant Software
2026.1 6/26/2026 PDF 5.4 MB
Reveal Troubleshooting Guide for Radiant Software
2026.1 6/26/2026 PDF 231.3 KB
Lattice Radiant 2.2.1 Software Guide for Lattice Diamond Users
2.2.1 3/31/2021 PDF 2.9 MB
Synopsys Synplify Pro for Lattice User Guide
12/20/2024 PDF 9 MB
Radiant Constraints Reference Guide
2026.1 6/26/2026 PDF 336.9 KB
Lattice Memory Mapped Interface (LMMI) and Lattice Interrupt Interface (LINTR) User Guide
FPGA-UG-02039 1.2 5/31/2022 PDF 1.7 MB
Programming Tools User Guide for Radiant Software 2026.1
2026.1 6/26/2026 PDF 3.9 MB
iCE40 UltraPlus I2C and SPI Hardened IP Usage Guide - Radiant Software
FPGA-TN-02053 1.2 12/21/2021 PDF 1.3 MB
iCE40 sysCLOCK PLL Design and Usage Guide
FPGA-TN-02052 1.3 8/26/2021 PDF 1.4 MB
Lattice Radiant Software 2026.1 Intellectual Property User Guide
2026.1 6/26/2026 PDF 452.1 KB
Lattice Radiant TCL User Guide
2026.1 6/26/2026 PDF 363 KB
Lattice Radiant Software 2026.1 User Guide
2026.1 6/26/2026 PDF 14.9 MB
Radiant MachXO4 Migration Guide
2026.1 6/26/2026 PDF 923.8 KB
TITLE NUMBER VERSION DATE FORMAT SIZE
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Lattice Radiant Known Issues
2026.1 6/26/2026 PDF 443.8 KB
TITLE NUMBER VERSION DATE FORMAT SIZE
Select All
Product Bulletin PB240501 - Radiant Support for SED in Nexus Platform
PB240501 1.0 6/4/2024 PDF 242.5 KB
Lattice Radiant 2025.2 Design Advisory
FPGA-DA-251201 1.0 12/11/2025 PDF 119.8 KB
Lattice Radiant Software and IP Licensing Updates
FPGA-PB-02030 1.2 3/25/2026 PDF 309.1 KB
Product Bulletin - IP End-of-Life (EOL) Notice 1H 2025
FPGA-PB-02023 1.0 11/24/2025 PDF 222.6 KB
TITLE NUMBER VERSION DATE FORMAT SIZE
Select All
Radiant Product Brochure
IO-264 1.0 2/27/2018 PDF 1.4 MB
TITLE NUMBER VERSION DATE FORMAT SIZE
Select All
Lattice Radiant 2026.1 Release Notes
2026.1 6/26/2026 PDF 388 KB
TITLE NUMBER VERSION DATE FORMAT SIZE
Select All
Lattice Radiant Post-Synthesis Reveal Debug Flow Tutorial
2026.1 6/26/2026 PDF 426.5 KB
Lattice Radiant Software Tutorial with CrossLink-NX (LIFCL)
3.2 7/11/2022 PDF 6.3 MB
Lattice Radiant Block-Based Design Tutorial
2026.1 6/26/2026 PDF 1.4 MB
Lattice Power Calculator Tutorial
2026.1 6/26/2026 PDF 1.8 MB
TITLE NUMBER VERSION DATE FORMAT SIZE
Select All
High Reliability & Functional Safety for FPGAs with Synplify & Radiant
WP0036 1.0 3/25/2024 PDF 2.3 MB
Rapid Prototype Work Flow with HDL Coder - 5G OFDM and Single Tone Modulation Use Case
WP0039 1.0 8/8/2024 PDF 1.8 MB
IoT Sensor Connectivity and Processing with Ultra-Low Power, Small Form-Factor FPGAs
1.0 4/3/2018 PDF 3 MB
TITLE NUMBER VERSION DATE FORMAT SIZE
Select All
Lattice Radiant Software 2026.1 Help
2026.1 6/26/2026 PDF 15.7 MB
TITLE NUMBER VERSION DATE FORMAT SIZE
Select All
Power Estimator for Radiant 2026.1 64-bit for Linux
2026.1 6/26/2026 ZIP 1.9 GB
Power Estimator for Radiant 2026.1 64-bit for Windows
2026.1 6/26/2026 ZIP 1.6 GB
Programmer Standalone 2026.1 64-bit for Linux
2026.1 6/26/2026 ZIP 198 MB
Reveal Standalone 2026.1 64-bit for Linux
2026.1 6/26/2026 ZIP 203 MB
FlexNet Utility License Files for Windows v11.19
11.19 6/28/2024 ZIP 101.1 MB
FlexNet Utility License Files for Linux v11.19
11.19 6/28/2024 TAZ 34 MB
HSM Signing Encrypting Script for Nexus – Linux
Access this document via a Technical Support Request after signing in to the Lattice website. Complete the request form via this link, please click here. 		6/28/2024 WEB
HSM Signing Encrypting Script for Nexus – Windows
Access this document via a Technical Support Request after signing in to the Lattice website. Complete the request form via this link, please click here. 		6/28/2024 WEB
Programmer Standalone 2026.1 64-bit for Windows
2026.1 6/26/2026 ZIP 175.8 MB
Reveal Standalone 2026.1 64-bit for Windows
2026.1 6/26/2026 ZIP 173 MB
Radiant 2026.1 64-bit for Windows
2026.1 6/26/2026 ZIP 3.7 GB
Radiant 2026.1 64-bit for Linux
2026.1 6/26/2026 ZIP 6.4 GB
Linux Installers MD5 Checksums 2026.1
2026.1 6/26/2026 ZIP 1.3 KB

*By clicking on the "Notify Me of Changes" button, you agree to receive notifications on changes to the document(s) you selected.

Radiant IP Modules Documentation

To view the full list of documents related to Propel IP Modules, please visit the Lattice IP Modules page.

License Types

Lattice Design Tools require a license to utilize the software. Download our Licensing User Guide for Windows and Linux or Read Licensing FAQ for more information.

Notice: If you are upgrading to Radiant 2024.1 or later and generated your Radiant license prior to June 2024, please generate a new license to get access to QuestaSim Lattice Edition included in Radiant.

Radiant Software Free License

The Lattice Radiant software offers leading-edge design and implementation tools optimized for our low-power FPGA architectures. The free license enables users to design and evaluate the performance of all Radiant supported devices.

Request Node-locked License

Request Floating License

Radiant Software Subscription License

The full Radiant license enables users to design and optimize solutions for all Radiant supported devices.

To purchase or renew a Software license, please go to the Online Store or contact a local sales representative or distributor.

If you have purchased a Software license and received a Software Serial Number, please go to our Subscription licensing form.

Software Evaluation License

Explore our powerful Software Tools crafted to enhance your productivity and enjoy the seamless integration and an intuitive interface that elevates your design process. Experience the complete suite of any of the Lattice Software Tools features for 60-days. Click Request Evaluation License to get started.

Done with the evaluation? Purchase the full subscription license in our Online Store or contact a local sales representative or distributor.

Licensing Support Table

Refer to below details on device support and features per license category.

  Free License Subscription License
Fee No Yes
Type Node-locked/Floating Node-locked/Floating
Period Annual Annual (60-day evaluation license available)
Version Support 2 Releases + 2 Updates 2 Releases + 2 Updates
Device coverage Lattice Avant (LAV-AT-E) * Lattice Avant (LAV-AT-E/G/X) *
MachXO4 (LFMXO4) MachXO4 (LFMXO4)
MachXO5-NX (LFMXO5-25) MachXO5-NX (LFMXO5-25)
MachXO5-NX (LFMXO5-100T) ** MachXO5-NX (LFMXO5-100T)
MachXO5-NX (LFMXO5-35) MachXO5-NX (LFMXO5-35)
MachXO5-NX (LFMXO5-35T) ** MachXO5-NX (LFMXO5-35T)
MachXO5-NX (LFMXO5-65) ** MachXO5-NX (LFMXO5-65)
MachXO5-NX (LFMXO5-65T) ** MachXO5-NX (LFMXO5-65T)
Certus-N2 (LN2-CT-ES) ** MachXO5-NX (LFMXO5-15D) *
CertusPro-NX (LFCPNX) ** MachXO5-NX (LFMXO5-55TD) *
Certus-NX (LFD2NX) MachXO5-NX (LFMXO5-55TDQ) *
CrossLink-NX (LIFCL) MachXO5-NX (LFMXO5-30TD) *
CrossLinkU-NX (LIFCL-33U) ** MachXO5-NX (LFMXO5-30TDQ) *
iCE40 UltraPlus (iCE40UP) Certus-N2 (LN2-CT-ES)
  CertusPro-NX (LFCPNX)
  Certus-NX (LFD2NX)
  CrossLink-NX (LIFCL)
  CrossLinkU-NX (LIFCL-33U)
  Certus-NX-RT (UT24C)
  CertusPro-NX-RT (UT24CP)
  iCE40 UltraPlus (iCE40UP)  
IP (since 2025.2) DSP DSP
Video Processing Video Processing
Video Connectivity Video Connectivity
Basic Peripheral Basic Peripheral
MIPI MIPI
DDR3 DDR3
USB23 USB23
  PCIe
  Ethernet 10G and below
  DDR4, LPDDR4, DDR5
OS Support Windows 11 Windows 11
RHEL 8.10 RHEL 8.10
RHEL 9.6 RHEL 9.6
Ubuntu 22.04 LTS Ubuntu 22.04 LTS
Ubuntu 24.04 LTS Ubuntu 24.04 LTS
Simulation Siemens QuestaSim Lattice FPGA Edition Siemens QuestaSim Lattice FPGA Edition
Synthesis Lattice Synthesis Engine Lattice Synthesis Engine
Synopsys SynplifyPro Lattice Edition Synopsys SynplifyPro Lattice Edition
     
Features License Required  
Power Calculator No. Bundled with tool.  
Reveal Analyzer No. Bundled with tool.  
Reveal Inserter No. Bundled with tool.  
Programmer No. Bundled with tool.  
Synthesis Yes. Bundled with license.  
Simulation Yes. Bundled with license.  

*Note:
Free License:
* = Evaluation Mode (Place & Route)
** = Evaluation Mode (time-limited bitstream)

Subscription License:
* = Contact Support for License

Questasim Lattice Edition Features

Feature Value Proposition Questa Lattice Edition
Fully Optimized Simulation User control over optimization for performance vs visibility trade-off Yes
OS Support Compute Environment Windows & Linux
Natively 64-bit Increased range of memory available for application enabling use of more complex simulation models. Yes
VHDL and Verilog Support VHDL-1993, VHDL-2008, Verilog, SystemVerilog Yes
Mixed Language Support Designs that contain VHDL, Verilog and SystemVerilog blocks Yes
SystemVerilog TB Support Support for SystemVerilog testbenches* Yes (Includes Assertions)
qrun Push-button compile and file management Yes
Interactive Debug Observe and control the execution of the simulation Yes
Advanced Visualizer Debug Helps to root-cause bugs faster Generates output for Visualizer use in Questasim Prime

* Does not support OVM/UVM or SystemVerilog Class Debug

Radiant Feature List

  • Integrated Design Environment and Source Editor – Easy design navigation and debugging with integrated tools for constraint editing, design analysis and floorplanning with an HDL source code editor with keyword highlighting support for VHDL, Verilog, SDC and Lattice constraint attributes
  • Process Toolbar & Message Console – Design flow process toolbar and common message console with message classification and filtering
  • Constraint Editors with Industry Standard Constraint Support – Integrated timing and design constraints, floorplanning and I/O planning tools with Synopsys Design Constraints (SDC)
  • IP Catalog with Industry Standard Encryption Support – Integrated interface to access the extensive on-line Lattice IP Catalog with available IEEE1735 Encryption
  • Multiple Implementations and Strategies – Design exploration with multiple implementations and optimization strategies
  • Design Cross Probing and On-Chip Debugging – Comprehensive, close-looped physical to logical design cross probing and signal-centric on-chip debug for real-time debug analysis with waveforms
  • Power Calculator – Accurate data driven graphical power calculation and estimation tool based on silicon performance data
  • Tcl Scripting – Flow automation and script control to streamline design operations
  • Simulation Wizard – Comprehensive guidance for simulation setup, execution, and analysis
  • Third-Party Tools – Siemens QuestaSim Lattice FPGA Edition, ModelSim® Lattice FPGA Edition and Synopsys Synplify Pro® for Lattice

Version History

Click here to see all Radiant Version History.

Videos

Available Videos
Video Title Time Size Abstract
What’s New in Lattice Radiant® 2025.2 1:37 76.0 MB Lattice Radiant 2025.2 focuses on improvement with verification cycle, design productivity and added value with subscription license bundled with IP.
Introduction to Lattice Radiant Software 8:32 47.6 MB Lattice Radiant Software Introductory Video featuring key easy design experience features.
Lattice Radiant Software Tool Flow - Part 1 14:43 55.9 MB Featuring the license software installation guide and technical support, creating new Radiant project and adding design input and source files, and how to customize an IP using the IP Catalog.
Lattice Radiant Software Tool Flow - Part 2 27:58 107.1 MB Featuring the use of Simulation Wizard for design simulation, steps on setting the timing and location assignments, how to process the design and the uses of debugging tools- Netlist Analyzer, Physical Designer, Cross Probing.
Lattice Radiant Software Tool Flow - Part 3 14:31 51.9 MB Featuring the steps on how to use the Power Calculator for analyzing power consumption, how to analyze the static timing through the Timing Analyzer and programming the FPGA using the Programmer, and the usage of Reveal Inserter for design debugging.
Setting up a Floating License Tutorial 5:43 25.4MB Instructional Video on how to setup a floating license on a server and how to setup environment variables on a client machine in order to access the server license.
Lattice Radiant Design Software Video Series -
 -
 The Lattice Radiant Design Software Video Series is a multi-part video series covering every aspect of FPGA design and implementation using Lattice Radiant Design Software. It is well suited for both experienced users wanting to learn all aspects of the tool or for new users wanting to get started quickly with the tool.

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