Freedom Everywhere

HiFive1 Rev B

HiFive1 Rev B is an upgrade to our low-cost development board featuring the Freedom E310. It’s the best way to start prototyping and developing your RISC‑V applications.

HiFive1 Rev B Features
and Specifications

Microcontroller
Operating Voltage

3.3 V and 1.8 V

Input Voltage

5 V USB or 7-12 VDC Jack

IO Voltage

3.3 V

Digital I/O Pins

19

PWM Pins

9

SPI Controllers/HW CS Pins

1/3

UART

2

I2C

1

Networking

WiFi/BT (off-chip)

External Interrupt Pins

19

External Wakeup Pins

1

Flash Memory

32 Mbit Off-Chip (ISSI SPI Flash)

Host Interface (microUSB)

Program, Debug, and Serial Communication

Debug

Segger J-Link, drag/drop code download

Weight

22 g

SoC

Freedom E310

FE310-G002Learn More

Dimensions

68 mm

Long

51 mm

Wide

Why buy the HiFive1?

If you’re a software developer, system architect, hacker, or maker, we can think of a few reasons to buy this board:

  • Get the fastest Arduino-compatible RISC‑V board
  • Develop on the RISC‑V platform
  • Customize your own microcontroller
  • Support open source hardware
  • Create the next great thing!
Pre-order Rev B ($59)

What People
are Saying

For those following the RISC‑V space, SiFive’s new Freedom E310 is a long-awaited milestone.

William Wong — Technical Editor, Penton Media

Sutter Hill Ventures

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

Stefan Dyckerhoff — Sutter Hill Ventures, Managing Director