Chip design, reimagined.

Introducing a fast, affordable, and efficient new way to design silicon chips.

A new way of building custom silicon.

  • 01. Design

    Choose the base SoC that suits your application. Create variations using a rich library of IP from our DesignShare Partners — or onboard your own IP. Save as many chip designs as you like.

  • 02. Prototype

    Run your application code on virtualized chips. Iterate until you get the performance that’s right for your product.

  • 03. Order

    Receive sample chips within weeks — at a deep discount. With SiFive, there are no upfront IP costs until you need production quantities.

Base SoCs

The starting points.

FE Freedom Everywhere

Designed for embedded microcontrollers, IoT, wearables, and more.

TSMC 180nm process

Low Power MCU
General-purpose embedded MCU
Intelligent Sensor
Hub for analog & digital sensors
U2F Security Key
Key for 2-factor authentication

FU Freedom Unleashed

Unix-capable SoCs suitable for machine learning, storage, networking, and more.

TSMC 28nm process

Application Processor
Linux-ready with DDR3/DDR4 controller
SSD Controller
High performance NVMe FLASH controller
AI Camera SoC
Intelligent deep neural network camera processor
The Beginning

Let’s get real.

Introducing our first silicon proof points — built with the same technology that's behind the SiFive Chip Designer.
Freedom Everywhere

FE310

The FE310 is the first member of the Freedom Everywhere family of customizable SoCs. The FE310 was designed from the Low-Power MCU base SoC and features the SiFive E31 Standard Core.

Speed

320+ MHz

Among the fastest on the market

Performance

1.61 DMIPs/MHz

FE310 Key Features

E31 Standard Core

  • RV32I Base Integer Instruction Set, Version 2.0
  • “M” Standard Extension for Integer Multiplication and Division, Version 2.0
  • “A” Standard Extension for Atomic Instructions, Version 2.0
  • “C” Standard Extension for Compressed Instructions, Version 1.9
  • RISC‑V Privileged ISA Specification, Version 1.9.1
  • RISC‑V External Debug Support, Version 0.11

Additional Features

  • 16KB L1 Instruction Cache
  • 16KB Data SRAM Scratchpad
  • Hardware multiply/divide
  • Debug module
  • OTP non-volatile memory
  • Flexible clock generation with on-chip oscillators and PLLs
  • Peripherals including UARTs, QSPI, PWMs, and timers
  • Multiple power domains + low-power standby mode
Freedom Unleashed

FU540

The FU540 is the first member of the Freedom Unleashed family of customizable SoCs. The FU540 was designed from the Application Processor base SoC and features the SiFive U54-MC Standard Core.

Speed

1.5 GHz+

4+1 Multi-Core Coherent Configuration

Architecture

64-bit

DDR4 with ECC

FU540 Key Features

TSMC 28nm process

U54-MC Standard Core

  • 4× U54 RISC‑V Cores
  • 32 KiB 8-way L1 I-cache
  • 32 KiB 8-way L1 D-cache
  • 4× E51 RISC‑V Cores
  • 16 KiB 2-way L1I-cache
  • 8 KiB Data (DTIM).

Additional Features

  • 1x E51 RV64IMAC Management Core
  • Coherent 2 MB L2 Cache
  • 64-bit DDR4 with ECC
  • 1x Gigabit Ethernet
  • Built on TSMC 28nm process
  • Linux-capable RISC‑V SoC
  • 4x U54 RV64GC Application Cores
  • Sv39 Virtual Memory Support
Overview

Freedom Platform

Welcome to a fundamentally new approach to designing and producing custom chips. Verified base SoCs provide the agility to quickly and cost-effectively customize designs, unleashing the power and flexibility of custom silicon to businesses large and small.

Platform Families

Freedom Everywhere

Designed for embedded microcontrollers, IoT, wearables, and more.

TSMC 180nm process

Freedom Unleashed

Unix-capable SoCs suitable for machine learning, storage, networking, and more.

TSMC 28nm process

What People
are Saying

The real benefit of RISC‑V is that it could enable companies to build chips that better meet their needs.

Klint Finley — Wired Business

Sutter Hill Ventures

SiFive is providing innovative solutions that will fundamentally change the semiconductor industry.

Stefan Dyckerhoff — Sutter Hill Ventures, Managing Director

RISC‑V offers a fresh approach that has the potential to help reduce SoC development time and cost significantly.

Raja Koduri — GM Edge Computing Solutions, Chief Architect, Intel

Custom silicon is going to be a big theme going forward as each use case may carry different needs. ...One-size-fits-all [chips] might not hit each sweet spot. That is the hole that a company like SiFive could fill.

Matthew Lynley — TechCrunch