STM32N6

The first high-performance STM32 MCU with AI acceleration

The STM32N6x5xx and STM32N6x7xx devices are based on the high-performance Arm® Cortex®-M55, operating at a frequency up to 800 MHz.

The Cortex®-M55 core features the Arm® Helium™ vector processing technology. On top of standard microcontroller tasks, this core enables energy-efficient digital signal processing. The Cortex®-M55 is equipped with a floating-point unit (FPU) that supports single- and half-precision (IEEE 754 compliant) data-processing. The Cortex®-M55 includes a 32-Kbyte ICACHE, a 32-Kbyte DCACHE, as well as 128-Kbyte data TCM RAM and 64-Kbyte instruction TCM RAM with ECC for critical real-time routines.

These microcontrollers have TrustZone®-aware support and a memory protection unit (MPU) for enhanced application security. A secure boot ROM ensures secure booting from external interfaces.

The devices embed a 4.2-Mbyte contiguous SRAM organized in several banks, an 8-Kbyte backup SRAM active in VBAT mode, and a flexible external memory controller (FMC) for static memories, XSPI 8-/16-bit configurations.

The STM32N6x7xx devices feature an ST Neural-ART accelerator, running at a maximum frequency of 1 GHz, and providing 600 Gops using optimized hardware units for DNN (deep-neural network) inference functions to optimize power efficiency. Dedicated streaming engines are integrated into it to optimize data flow and minimize internal buffer usage and power. The accelerator supports on-the-fly weight decompression and real-time data encryption and decryption.

The Neo-Chrom graphic accelerator ensures efficient 2.5D graphic processing, by providing hardware acceleration for functions like scaling, using high-quality interpolation, free rotation, alpha blending, texture mapping, and perspective transformation.
 

Features

• Dedicated embedded Neural Processing Unit: 600 GOPS NPU, 3 TOPS/W power consumption
• Arm® Cortex®- M55 core: 1280 DMPIS/ 3360 CoreMark
• Available in 6 packages ranging from 169 to 264 pins
• Ideal for edge AI or graphics applications: 4.2 MB contiguous embedded RAM
• Extended multimedia capabilities: 2.5D graphics accelerator, H264 encoder, JPEG encoder/decoder
• Computer vision pipeline: MIPI CSI-2, camera I/F, Image signal processor
• Target SESIP3 and PSA Level 3 certifications 

Applications

• Smart Farming: Edge AI and Sensing for Farming 
• Smart industry: visual anomaly detection
• Smart city: building automation
• Smart home: event detection
• AI & Computing

Benefits

• Dedicated embedded neural processing unit
• Extended security features
• Computer vision pipeline
• Embedded RAM
• Extended multimedia capabilities

Block diagram