UK chip firm XMOS picks RISC-V for next-gen microcontrollers

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Fabless maker goes for open-source chip architecture, with actual chips schedueld to ship late 2023

British chip company XMOS has revealed its latest xcore high-performance microcontrollers are to be built around the RISC-V open standard instruction set architecture, in the hopes of opening up the silicon to a wider range of embedded system designers.in San Jose, which starts today, the fourth generation of xcore chips will ditch the proprietary instruction set architecture the company used until now.

As microcontrollers, the xcore chips are used in embedded applications, providing the compute power inside a range of devices from smart TVs to audio kit to network appliances or industrial robotics. Unlike some, XMOS designed its chips around high performance and implementing functions in real-time software rather than adding dedicated hardware modules around the processor cores.

While the xcore 400 family will execute the RISC-V instruction set, this has effectively been grafted onto the existing architecture to produce the new generation, Lippett claimed, with some minor changes such as increasing the register file size to that implied by the RISC-V instructions.

 

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