SiFive
RISC-V
Embedded Linux Boards
HiFive Unleashed
The world’s first RISC-V-based, Linux-capable development board
SiFive
RISC-V
Embedded Linux Boards
We founded SiFive to bring the power of open source to the semiconductor industry. We do this not only by supporting the RISC-V specification, but also by implementing the specification and getting usable chips into the hands of developers as quickly as we can. We did exactly that just over a year ago when we introduced the open source, Arduino-compatible HiFive1 dev board based on our Freedom Everywhere line of 32-bit microcontrollers. Today, we’re proud to be doing the same thing with our Freedom Unleashed 64-bit, Linux-capable system-on-chip (SoC) platform. Meet the HiFive Unleashed, the world’s first RISC-V-based, Linux-capable development board.
Industry skeptics have previously dismissed RISC-V as an academic project, low performance, and only for microcontrollers. HiFive Unleashed, featuring the SiFive Freedom U540 SoC, ends all of that. Linux and RISC-V were meant for each other, and the HiFive Unleashed dev board brings them together for the first time.
Here’s what’s actually on the HiFive Unleashed board:
The board measures is 120 mm x 90 mm. If you include the power button, which sticks out from the board, the dimensions are 129 mm x 90 mm.
The foundation of the HiFive Unleashed board is the Freedom U540 SoC:
RISC-V has been described as the "Linux" of processors. RISC-V is a free, open, extensible instruction set architecture (ISA) invented by the co-founders of SiFive. The RISC-V specification is now maintained by the nonprofit RISC-V Foundation, whose membership has increased more than six-fold since 2015 and now consists of over 100 members, including some of the largest companies in the world.
We first publicly demonstrated this board on February 3, 2018 at FOSDEM. Similar to our previous board, the HiFive1, we’re building our initial batches locally and will test each board ourselves.
Crowd Supply will be handling all fulfillment and logistics. As such, all boards will be shipping from Portland, Oregon in the US. See The Crowd Supply Guide for more information on their ordering and shipping policies.
Our early boards are up and running! We are still characterizing and bringing up the board, so the final specs may change slightly. But the silicon and board are in great shape and we can’t wait to see it in the hands of developers!
Produced by SiFive in San Mateo, CA.
Sold and shipped by Crowd Supply.
Join the revolution! Your early support will help tremendously and you'll be rewarded with the world's first and only Linux-capable, RISC-V-based development board.
Absolutely can't wait to get your hands on the world's first and only Linux-capable, RISC-V-based dev board? Then grab one of these limited-edition boards with delivery slated for the end of March. Only 75 early access boards available.
SiFive is the leading provider of processor cores, accelerators, and SoC IP to create domain-specific architecture based on the free and open RISC-V instruction set architecture. SiFive offers scalable, configurable processor cores pre-integrated with security, trace, and debug features for workload-specific accelerator designs. Founded by the inventors of RISC-V, SiFive has 15 design centers worldwide and backing from Sutter Hill Ventures, SK Hynix, Qualcomm Ventures, Western Digital, Intel Capital, Spark Capital, Osage University Partners, and Prosperity7 Ventures.
