risc-v News - Page 50 of 50 - CNX Software

May 5, 2017 by Jean-Luc Aufranc (CNXSoft) - 4 Comments

SiFive Launches 32-bit E31 Coreplex & 64-bit E51 Coreplex RISC-V Processors, Reveals Pricing

SiFive unveiled their Freedom U500 and E500 open source RISC-V SoCs last year, and a little layer launched HiFive1 Arduino compatible development board based on SiFive Freedom E310 processor. The company has now launched their non-open source Coreplex IP also based on RISC-V ISA with the 32-bit E31 Coreplex and 64-bit E51 Coreplex, and explained details about pricing. Some of the key features of the processors are listed below: E31 Coreplex 32-bit RV32IMAC core @ 900 to 1.5 GHz (with 28nm process) Advanced Memory Subsystem – 16KB, 2-way Instruction Cache, Instruction Tightly Integrated Memory (ITIM) option, up to 64KB Data Tightly Integrated Memory (DTIM) support Up to 16 local interrupts with vectored addresses Performance – 1.61 DMIPS/MHz ; 2.73 Coremark/MHz Power Consumption 28nm HPC process – Core only: 150 DMIPS/mW ; Coreplex: 41 DMIPS/mW 55nm LP process – Core only: 95 DMIPS/mW; Coreplex: 16 DMIPS/mW Applications: Edge Computing, Smart IoT […]

November 30, 2016November 30, 2016 by Jean-Luc Aufranc (CNXSoft) - 8 Comments

$59 HiFive1 Arduino Compatible Board is Powered by Sifive Open Source RISC-V MCU (Crowdfunding)

Royalty-free RISC-V instruction sets has been getting in the news in the last few years with various MMU designs from companies or projects like lowRISC, PULPino, and SiFive, and recently there are been rumors that Samsung may use RISC-V in their future IoT SoCs. Many projects are still in progress, and while you can get involved in OnChip Open-V MCU crowdfunding campaign to their get the MCU or a development board, the cost for the MCU ($49) and development board ($99) is a little on the high side, and delivery is expected in 2018 for most rewards. SiFive appears to have a more interesting open source RISC-V solution with HiFive1 Arduino compatible board going for $59 and slated to ship between December 2016 and February 2017. HiFive1 development board specifications: MCU – SiFive Freedom E310 (FE310) 32-bit RV32IMAC processor @ up to 320+ MHz (1.61 DMIPS/MHz) Storage – 128 Mbit […]

November 23, 2016 by Jean-Luc Aufranc (CNXSoft) - 11 Comments

OnChip Open-V Open Source 32-bit RISC-V Processor Launched on CrowdSupply

Open source hardware gives mostly full control over software and hardware, but there are different levels of openess, with some companies wrongly claiming their product to be open source hardware – with a nice accompanying logo – once they dump some source code somewhere and publish the PDF schematics, while others are doing it right with the release of schematics and PCB layout in source format, as well as software and proper documentation. However even for the latter group, the actual chips are closed source bought directly from silicon vendors or their distributors. So the good news is that you now have the opportunity to bring the meaning of open source hardware to a whole new level thanks to OnChip Open-V 32-bit processor that is open source, and getting launched on Crowd Supply crowdfunding platform. OnChip Open-V is based on RISC-V (pronounced “risk-five”), comes with peripherals, and should be competitive […]