HiFive™ Unleashed (Discontinued) - SiFive Boards

Freedom Unleashed

Featuring the Freedom U540 (FU540) SoC, the world’s first Linux-capable, multi-core, RISC-V processor, this developer board marks a brand-new era for RISC-V software - the beginning of support for rich operating systems. With 3 execution modes (Machine, Supervisor, User), Sv39 Virtual Memory, 8GB of DDR4, Gigabit Ethernet, and a ChipLink expansion port, modern operating systems have an ideal RISC-V target. A 5th core (monitor core) is also available for real time applications. SiFive Mix+Match technology offers a potent combination of application and real-time processing. The SiFive Essential™ S51 (RV64IMAC) can service auxiliary functions and cooperate with the SiFive Essential U54-MC cluster, making this an ideal heterogeneous software development platform where Linux and an RTOS can co-exist.

Product Features

Advantages of HiFive
Unleashed

If you’re a serious software developer, kernel developer, or Linux enthusiast, we can think of a few reasons to use this board:

• Port software to the RISC‑V platform
• Evaluate the SiFive U54‑MC SoC
• Own the fastest RISC‑V SoC in the world
• Want multi-core, Linux-capable RISC‑V hardware
• Want to support open source hardware
• Need to create the next great thing!

HiFive Unleashed
Expansion Board

The HiFive Unleashed Expansion Board converts your HiFive Unleashed into a RISC-V Linux PC. It features a Microsemi PolarFire FPGA preprogrammed as a PCI Express Root Complex, allowing you to connect peripherals to the following:

Peripheral Connections

• x1 PCI Express connector
• x16 PCI Express connector with 4 lanes of PCIe connected
• SSD M.2 connector
• SATA connector (PCI Express to SATA Bridge)

Join the RISC-V Revolution