ST Launches STM32G4 Microcontrollers with Dedicated Math Accelerators to Boost Performance and Energy Efficiency

STMicroelectronics, a global leader in microcontrollers, unveils the STM32G4 series—engineered to power next‑generation smart appliances, industrial automation, and digital power systems with unparalleled performance and energy efficiency.

At the heart of the new family are two dedicated hardware mathematical accelerators: the Filter‑Math Accelerator (FMAC) and a CORDIC engine. These peripherals accelerate trigonometric, logarithmic, exponential, IIR/FIR filtering, and vector operations—critical for motor control, signal conditioning, and digital power supply regulation—allowing the Cortex‑M4 core to focus on sensor fusion and higher‑level control.

Additional performance boosters include high‑resolution power‑conversion timers that offload the CPU, enhanced analog peripherals, ultra‑fast peripheral interfaces for rapid external event handling, and full support for the latest USB‑C Power Delivery, enabling 100W fast charging and powering.

The STM32G4 builds on ST’s proven efficiency tools, such as the ART Accelerator and CCM‑SRAM Routine Booster, which improve dynamic and static memory cache performance for real‑time, low‑power applications.

Powered by a 170 MHz Arm Cortex‑M4 core with a floating‑point unit and DSP extensions, the series achieves 213 DMIPS and 550 CoreMark benchmarks. Integrated power‑saving features—from advanced process technology to intelligent peripheral sleep/wake‑up management—ensure a low energy footprint across all operating modes.

Compared to the STM32F3 line, the STM32G4 delivers roughly three times the performance, supports up to 125 °C ambient operation, offers dual‑bank memory for live firmware upgrades, and is available in robust LQFP80 and LQFP128 packages. Its immunity rating reaches level 5, tolerating transient bursts above 4 kV (IEC 61000‑4‑4).

To streamline development, ST has expanded its ecosystem with affordable Nucleo boards (NUCLEO‑G474RE, NUCLEO‑G431RB) and feature‑rich evaluation boards (STM32G474E‑EVAL, STM32G484E‑EVAL with crypto). The STM32CubeG4 software suite, X‑CUBE‑MCSDK v5.4, and the online ST‑MC‑SUITE motor‑control tool provide comprehensive resources for rapid prototyping and deployment.