MCUs add math accelerators

Targeted at advanced digital power applications and consumer and industrial appliances, STMicroelectronics’ 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.

ST’s new hardware mathematical accelerators introduce 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.

>> Read the complete article originally published on our sister site, Power Electronic News: “ST: STM32G4 MCUs dedicated to speeding calculations.”

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