Product Launchhsp acceleratorcortex m33energy harvestingstm32
STMicroelectronics Adds HSP to STM32U3 Microcontrollers
7.8
STMicroelectronics introduced two new STM32U3 microcontrollers, the STM32U3B5 and STM32U3C5, offering up to 640 KB SRAM, 2 MB flash, and a hardware signal processor (HSP) accelerator for on-device AI and energy-harvesting operation. Both run an Arm Cortex-M33 at up to 96 MHz with near-threshold operation down to 0.65 V, expanded interfaces, and security features, and will be shown in a batteryless Nucleo camera demo at Embedded World 2026.
Key Points
- 1Introduce STM32U3B5/C5 MCUs with HSP accelerator, up to 640 KB SRAM and 2 MB flash
- 2Deliver HSP gains: 13× performance vs Cortex-M33 and 9× better efficiency vs STM32U5
- 3Enable batteryless edge AI use cases like person detection on energy-harvesting Nucleo demos
Scoring Rationale
Official product release with notable HSP energy‑efficiency gains, but advances are incremental within established MCU market.
Practice interview problems based on real data
1,625 SQL & Python problems across 15 industry datasets — the exact type of data you work with.
Try 250 free problems
