Tag: 上海娱乐地图2019

ST: STM32G4 MCUs with new mathematical accelerators increase speed, save energy

first_imgAs the latest smart electronic products add extra sensor-driven features and adopt higher-efficiency power technologies such as silicon carbide or gallium nitride to save energy, STMicroelectronics has unleashed its next generation of microcontrollers with the performance to manage them.Targeted at advanced digital power applications and consumer and industrial appliances, the new STM32G4 microcontrollers introduce two new hardware mathematical accelerators to boost processing of applications using Cordic and Filtering functions among a range of features to support increased performance and energy efficiency. Dedicated to speeding calculations such as trigonometry for energy-saving motor controls in appliances or air conditioners and filtering for signal conditioning or digital power control, the accelerators compute results faster and more efficiently than the general-purpose main processor. This offloading also frees the core to receive more sensor data and control additional user functions.Further new features include higher-resolution power conversion timers with various built-in functions that offload the CPU and ease developers’ lives. There are also higher-performing analog peripherals and converters, ultra-speed connections for lightning-fast response to external events, and support for the latest USB-C interface with Power Delivery that allows fast charging or conveniently powering devices up to 100W.The STM32G4 series builds on existing innovations created by ST to boost performance and efficiency, such as the ART Accelerator and CCM-SRAM Routine Booster. These, respectively, enhance dynamic and static memory-cache performance for superior whole-application and real-time performance on an efficient power budget.ST’s new hardware mathematical accelerators up the ante once again, introducing a Filter-Math Accelerator (FMAC) and dedicated CORDIC engine. These new peripherals deliver faster results for rotational and vector trigonometry used in motor control, as well as general logarithmic, hyperbolic, and exponential functions, IIR/FIR filtering for signal conditioning or the 3p/3z controller in digital power supplies, and vector functions such as convolution and correlation. The STM32G4 series is built on a high-speed 170MHz implementation of the Arm Cortex-M4 core, with floating-point unit and DSP extensions, benchmarked at 213DMIPS and 550 CoreMark. There are also power-saving innovations throughout, from the advanced process technology and architectural features to advanced peripheral sleep/wakeup management.The new STM32G4 series thus complements the existing STM32F3 series bringing three times more performance, new devices up to 125°C ambient temperature grade, dual-bank memories for live firmware upgrade, and new package options including LQFP80 and LQFP128. Robust against disturbances, the STM32G4 is particularly immune against Fast Transient Bursts, reaching the highest level — 5, which means practically more than 4kV on the equipment (IEC 61000-4-4).To assist development, ST has already extended the STM32 development ecosystem with affordable Nucleo boards (NUCLEO-G474RE and NUCLEO-G431RB) and full-featured evaluation boards (STM32G474E-EVAL and STM32G484E-EVAL with crypto) for STM32G4 MCUs and the STM32CubeG4 software pack. There are also a dedicated Motor Control Nucleo pack (P-NUCLEO-IHM03) and software development kits (X-CUBE-MCSDK v5.4), and the online motor-control tool, ST-MC-SUITE, that helps users browse the ecosystem to find and organize the resources they need for their projects.Share this:TwitterFacebookLinkedInMoreRedditTumblrPinterestWhatsAppSkypePocketTelegram Tags: Chips & Components Continue Reading Previous ADLINK: deploy AI from edge to cloud with Edge AI Solutions and the NVIDIA EGX platformNext Advantech takes accelerated computing from the Cloud to the Edge with NVIDIAlast_img read more

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That stuff lives with you Juror advocate sympathizes with triplemurder jury

first_imgLETHBRIDGE, Alta. – The jury in gruesome Alberta triple murder trial has a difficult road ahead even after they finish their deliberations, says a former juror who suffered post-traumatic stress disorder from his time in the jury box.Deliberations are to begin Wednesday in the case of Derek Saretzky, 24, who is charged with first-degree murder in the September 2015 deaths of Terry Blanchette, his two-year-old daughter Hailey Dunbar-Blanchette and Hanne Meketech, who was killed five days before the father and daughter.“It’s a pretty awful one. I get about three-quarters through an article and I think, you know what, that’s enough,” said jurors’ rights advocate Mark Farrant in an interview with The Canadian Press from Toronto.Farrant spent five months at the 2014 trial of Farshad Badakhshan, who was ultimately convicted of murdering his 23-year-old girlfriend, Carina Petrache.Farrant was later diagnosed with PTSD and has become an outspoken advocate for the need to provide counselling for jurors hearing horrific cases.He said the jurors at the Saretzky trial have been bombarded with horrific images of blood and death. When some of the graphic evidence was shown during the trial, some jurors broke into tears and needed a break before they could continue.That takes its toll every day, Farrant said.“It’s impossible not to take that home with you. That stuff lives with you. You are so wrapped up in that case, I would be surprised if you are thinking about anything else,” said Farrant.“Especially in a case as disturbing and heinous as the one involving Saretzky. I can’t imagine that they wouldn’t be wrapped up in that.”The jury has heard a video confessions where the accused told police he bludgeoned and stabbed both Blanchette and Meketech. He also admitted to choking the little girl and then dismembering, cannibalizing and burning her body.Although no real motive emerged during the trial, Saretzky told police he was being told by the devil to do bad things.He has pleaded not guilty to three charges of first-degree murder and to a count of causing an indignity to the girl’s body.Court has heard Saretzky knew all three victims, as well as Hailey’s mother, Cheyenne Dunbar, who he claimed to have dated. Dunbar testified that they were only friends.Farrant said a jury has to separate emotion from the simple facts of the case.“You might feel through the case a number of emotions — revulsion, you might feel hostility toward that person and anger — but really you can’t let that cloud what you do at the end of the day.”Fourteen jurors have heard all the evidence, but in the end only 12 will determine guilt. Farrant feels sympathy for the two alternates who are dismissed.“I’ve heard that from a number of jurors saying that in some ways is barbaric. The feeling that I sat through months and months of this and am told through a lottery that I’m not the one to see this through,” Farrant said.Farrant said jurors shouldn’t wait to seek counselling once the case is over.— Follow @BillGraveland on Twitterlast_img read more

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