STMicroelectronics has introduced its new STM32G5 series of mixed-signal microcontrollers (MCUs), doubling the compute performance of its previous-generation STM32G4 lineup to tackle real-time power conversion in AI datacenters and multi-axis motor control in humanoid robotics.
In production now starting at $1.0340 for 10,000-unit orders, the Arm Cortex-M33-based family runs at 280 MHz (delivering 420 DMIPS and 1136 CoreMark) and integrates Post-Quantum Cryptography (PQC) support alongside new digital-power and motor-control peripherals. STMicroelectronics also confirmed that dual-core variants will expand the single-core portfolio in 2027.
As GPU clusters push datacenter rack power toward 1 MW and total peak facility demands toward 2 GW by 2030, even marginal gains in power conversion efficiency translate into major reductions in energy loss and cooling overhead.
To address this, the STM32G5 is the first ST microcontroller to feature an enhanced 12-channel high-resolution timer.
This sharper timing allows power-supply designers to run dynamic reconfiguration algorithms that adapt to fluctuating server workloads, while supporting the high switching frequencies required by wide-bandgap silicon carbide (SiC) and gallium nitride (GaN) devices.
Beyond datacenter racks, renewable energy grids, industrial drives, and commercial drones, ST is targeting the rapid rise of physical AI and robotics. Humanoid robotic hands alone can pack up to 20 motors into a tight space, requiring fast, high-torque, multi-axis coordination for smooth movement.
Patrick Aidoune, General Manager of STMicroelectronics’ General Purpose and Automotive Microcontrollers Division, noted that the series is designed to make physical AI compute performance embeddable and accessible while improving sustainability, safety, and security.
To cut down on external glue logic and simplify board layouts, ST integrated a new on-chip programmable logic array (PLAy) alongside a dedicated position encoder (POSENC), motor-control timers, I/D cache, routine booster accelerators, and rich analog blocks including 12-bit ADCs, 12-bit DACs, op-amps, and ultra-fast comparators.
On the security front, the STM32G5 pairs Arm TrustZone IP with proprietary STM32Trust capabilities to meet stringent datacenter compliance standards.
Key security features include:
- Cryptographic and PQC readiness: An advanced cryptographic engine supporting ST’s Post-Quantum Cryptography libraries, side-channel attack resistance, and secure key storage.
- Hardware root of trust: An immutable Root of Trust (STiRoT) enabling secure boot, secure firmware updates, tamper detection, provisioning, and full lifecycle security management.
Developers can jumpstart designs using ST’s updated STM32CubeMX2 configuration tool, which adds live code previews and the memory-optimized STM32Cube HAL2 abstraction layer.
Hardware and software ecosystem support includes the NUCLEO-G564RE Nucleo board, the B-G564E-MC1S Motor Control Discovery Kit, the B-G564E-DPOW1 Digital Power Discovery Kit, X-CUBE-DPOWER libraries, and the X-CUBE-MCSDK motor-control SDK.
The STM32G5 series spans performance and high-resolution product lines with 64 KB to 512 KB of on-chip Flash in packages ranging from compact QFN32 to LQFP128 including a thermally enhanced exposed-pad LQFP option tailored for demanding datacenter power profiles.
Leadership Comments
“Digital power is at the heart of our mission to deliver innovative, clean, and energy-efficient solutions for a better tomorrow, and it requires control platforms that can keep pace with increasingly complex systems,” said Andy Hsiao, Senior Commodity Buyer, 
PSBG Materials Division at Delta Electronics. “The combination of processing power, integrated peripherals, and built-in security makes it a strong option for our designs, helping deliver lower energy losses, a smaller footprint, and higher reliability in demanding AI and EV applications.”
“In humanoid robotics, dexterity depends on combining strength, precision, sensing and real-time control in an extremely compact space,” said Paul Tian, CEO of Ruiyan Intelligent. “The STM32G5 delivers more than twice the performance of the previous generation, more peripheral support and stronger built-in security needed to control more motors, respond faster when speed and precision matter, and integrate more sensors into the robotic hand.”
More technical details are available at www.st.com/stm32g5.
