Trikarenos is a RISC-V-based totally chip for miniaturized space missions

Trikarenos is a RISC-V-based totally chip for miniaturized space missions - Who manufactures RISC-V processors - RISC-V CPU

Last updated 15 month ago

Space
Hardware
radiation
risc-v

Trikarenos is a RISC-V-based totally chip for miniaturized space missions



Forward-searching: Very few electronic devices used here on Earth can continue to exist once they depart the planet's cushty environment. Processors, specially, ought to be designed to face up to the harsh situations of outer area, consisting of radiation and near-absolute 0 temperatures. It appears that RISC-V may want to assist address this project.

Researchers at the Swiss public college ETH Zurich have advanced Trikarenos, a RISC-V-primarily based microcontroller designed to function reliably in harsh environments like area. Trikarenos can resist radiation-prompted unmarried event upsets (SEUs), which might be modifications inside the nation of a micro-digital device due to a unmarried ionizing particle. Additionally, it can supply performance degrees similar to traditional "area chips" while ingesting most effective a fragment of the equal strength budget.

Common countermeasures to space situations generally rely upon proprietary, radiation-hardened technologies, low-density production nodes, and substantial replication, as explained by the researchers. These factors make a contribution to excessive expenses and low levels of performance and efficiency. Trikarenos pursuits to address these demanding situations with a 32-bit RISC-V CPU structure and "superior" 28nm production technology provided by TSMC.

The 28nm node has tested resilience to the "unfavourable consequences" of radiation-prompted SEU occasions, according to the researchers, and it offers unprecedented tiers of performance as compared to previous designs. Trikarenos utilizes the ultra-low energy PULPissimo microcontroller structure, that's open source, similar to the RISC-V CPU architecture.

The chip consists of three RISC-V-based Ibex computing cores, each clocked at speeds of as much as 270 MHz, and they're furnished with records via 8 SRAM banks, every with 256 KB of reminiscence. These three cores perform in a "triple-center lockstep" configuration, in which each center plays the equal operation concurrently. In the occasion of an SEU event corrupting one of the cores, a vote similar to the one depicted in Minority Report might determine the suitable operation output.

Other architectural elements designed to decorate radiation tolerance include incorporated redundancy, blunders-correcting reminiscence banks, and a "memory scrubber" that continuously reads every reminiscence deal with to accurate any correctable errors. Additionally, the three Ibex cores are bodily separated via a 20-micrometer hole around each middle.

The three-center design gives expanded fault tolerance but may also impact the ability performance of the controller. Nevertheless, the layout appears capable of handing over overall performance degrees similar to the PowerPC-based RAD750 chip, which has been in use for 2 many years and continues to be employed by foremost space groups for their maximum complex missions, which include the James Webb Space Telescope. In the coming years, NASA intends to update RAD750 with a high-overall performance RISC-V CPU designed through SiFive.

In assessment to RAD750, which consumes five watts of strength, Trikarenos can attain the identical computing effects with just 15.7 milliwatts, making it nice for energy-limited missions like CubeSat satellite tv for pc launches. If excessive reliability is not a demand, the three cores can perform in parallel, imparting 300 percent the performance of a triple-core lockstep design.

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