STM32G5 puts 111 ps timing and mixed signal control around a 280 MHz Cortex-M33

STMicroelectronics has launched the STM32G5, combining a 280 MHz Arm Cortex-M33 with a 12 channel timer offering 111 ps resolution. The mixed signal MCU family also adds a position encoder, 16 programmable logic elements and a 12 bit ADC running at up to 5 Msps, compared with 4 Msps in the previous generation.^[1][2]

For digital power and motor control, those blocks allow current and voltage sampling, position feedback and PWM generation to be handled within the MCU. A comparator with a quoted 20 ns propagation delay supports fast hardware responses, while two Filter Mathematical Accelerators perform filtering alongside the processor. The programmable logic provides another way to handle signals without passing every operation through firmware.^[1]

The ADC includes a pseudo-differential mode intended to improve signal-to-noise performance. ST also provides I3C and USB Full Speed interfaces, with TrustZone separating secure code and assets from the rest of the application.^[1]

ST reports 1,136 CoreMark at 280 MHz, against 569 for the STM32G4’s 170 MHz Cortex-M4. Memory options extend to 512 KB of flash, including a dual bank arrangement for firmware updates, with 96 KB of data flash and SRAM protected by ECC. Packages with exposed pads provide a thermal path into the PCB, and dual core STM32G5D devices are planned for production in 2027.^[1]

The NUCLEO-G564RE board and B-G564E-DPOW1 and B-G564E-MC1S Discovery kits cover initial evaluation, digital power and motor control respectively. Updated X-CUBE-DPOWER and X-CUBE-MCSDK packages include examples for the new peripherals, supported by STM32CubeMX2 and HAL2.^[1]

Sources

1. STMicroelectronics, STM32G5 launch and peripheral detail, 3 November 2026
2. STMicroelectronics, STM32G5 series product page

Macro photograph of gold chip contacts. Illustrative electronics photograph. Photo: Andrew Dawes / Unsplash. Photo source. Free Unsplash licence.