STM32N657X0H3Q

STM32N657X0H3Q is a high-performance microcontroller from STMicroelectronics' STM32N6 series in a VFBGA-264 package (14 x 14 mm), built on an Arm Cortex-M55 at 800 MHz with ST's Neural-ART accelerator for edge-AI inference, an internal SMPS (the Q suffix in ST's ordering scheme) and an industrial -40 to +125 C rating. ST's datasheet DS14791 (Rev 9) is production data, and the ST eStore lists this exact order code as Active and in stock. Selection advice: the X0 code is the 264-ball variant - the L0 code (STM32N657L0H3Q) packs the same series into a smaller 223-ball 10 x 10 mm footprint, so choose by board density and routing escape, and decode the full string against DS14791 section 7 before release because ball count, Flash option and temperature grade all ride on individual characters. Parameters verified against ST documentation.