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LoFive

Tiny RISC-V Microcontroller Board

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Small breadboard friendly development board using the SiFive FE310 RISC-V Microcontroller.

Specifications

  • MCU – SiFive Freedom E310 (FE310) 32-bit RV32IMAC processor @ up to 320+ MHz (1.61 DMIPS/MHz)
  • Storage - 128-Mbit SPI flash (ISSI IS25LP128)
  • Expansion - 2x 14-pin headers with JTAG, GPIO, PWM, SPI, UART, 5V, 3.3V and GND
  • Misc - 1x reset button, 16 MHz crystal
  • Power Supply - 5V via pin 1 on header; Operating Voltage: 3.3 V and 1.8 V
  • Dimensions - 38 x 18 mm (estimated)
  • License - CERN Open Hardware Licence v1.2

  • 1 × FE310-G000 SiFive Freedom E310
  • 1 × IS25LP128-JBLE 128 Mbit SPI Flash
  • 1 × SPX3819M5-L-3-3 Power Management ICs / Linear Voltage Regulators and LDOs
  • 1 × SPX3819M5-L-1-8 Power Management ICs / Linear Voltage Regulators and LDOs
  • 1 × SN74LVC1G07 Logic ICs / Gates and Inverters

View all 13 components

View all 4 project logs

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Discussions

Adam Vadala-Roth wrote 08/29/2017 at 03:10 point

very awesome michael!!!! Is it easy to get samples of the chip?

  Are you sure? yes | no

Michael Welling wrote 08/29/2017 at 20:04 point

Not too bad. I just had to create the design and ask nicely.

A finished design helps.

  Are you sure? yes | no

Anders Dam Kofoed wrote 08/20/2017 at 16:39 point

Cool project. I have their first board. 

Can we buy these fully assembled from you? If yes, what price?

  Are you sure? yes | no

Michael Welling wrote 08/20/2017 at 17:03 point

I haven't assembled any quite yet. That is coming up next week. I will post when/if they are available.

  Are you sure? yes | no

Stephen Newberry wrote 08/20/2017 at 01:51 point

Very nice. I really wanted to get a project going using this chip, so I emailed sifive at their listed email address to ask about availability. This was almost two months ago... still unanswered. Looking forward to seeing how this goes.

  Are you sure? yes | no

Michael Welling wrote 08/20/2017 at 17:12 point

I think that it is still a little early for public availability.

  Are you sure? yes | no

Stephen Newberry wrote 09/06/2017 at 01:00 point

Just an update - I did receive a reply from the company and they will be available soon on CrowdSupply. I didn't want anyone reading this to be misled - thanks for sharing your design!

  Are you sure? yes | no

arnaud.durand wrote 08/20/2017 at 00:32 point

Where do you source FE310 MCUs? I cannot find any supplier (if we omit desoldering from HiFive1).

  Are you sure? yes | no

Michael Welling wrote 08/20/2017 at 01:18 point

Engineering samples only for now.

  Are you sure? yes | no

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