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 custom SoC 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
Intelligent Sensor
U2F Security Key
FU Freedom Unleashed
Unix-capable SoCs suitable for machine learning, storage, networking, and more.
TSMC 28nm process
Application Processor
SSD Controller
AI Camera SoC
The Beginning
Let’s get real.
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 0.13
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
- 1× S5 RISC‑V Core
- 16 KiB 2-way L1 I-cache
- 8 KiB Data (DTIM).
Additional Features
- 1x S5 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
“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