ARM Microcontrollers - MCU

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STM32U3 Ultra-Low-Power 32-Bit Microcontrollers

STMicroelectronics STM32U3 Ultra-Low-Power Arm^® Cortex^®-M33 32-Bit Microcontrollers with TrustZone^® and a Floating-Point Unit (FPU) operate at up to 96MHz. The single‑precision FPU supports all the Arm single‑precision data‑processing instructions and data types. The Cortex-M33 core also implements a full set of digital signal processing (DSP) instructions and a memory protection unit (MPU) that enhances application security. Based on near-threshold voltage technology, the STM32U3 devices reduce the active consumption down to 10µA/MHz, resulting in far longer battery life for any application.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (PEN) Filter the results in the table by unit price based on your quantity.	Qty.	Series	Package / Case	Minimum Operating Temperature	Maximum Operating Temperature	Packaging
ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M33 with TrustZone MCU, 96 MHz, 2 MB flash, 640 KB RAM, HSP, I3C, SMPS STM32U3B5ZIT6Q STMicroelectronics 1: S/ 44.26 417In Stock New Product	Mfr. Part # STM32U3B5ZIT6Q Mouser Part # 511-STM32U3B5ZIT6Q New Product	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M33 with TrustZone MCU, 96 MHz, 2 MB flash, 640 KB RAM, HSP, I3C, SMPS Learn More about STMicroelectronics stm32u3 mcus	Datasheet	417In Stock	S/ 44.26 S/ 34.53	Min.: 1 Mult.: 1 Max.: 20	STM32U3	LQFP-144	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M33 with TrustZone MCU, 96 MHz, 2 MB flash, 640 KB RAM, HSP, I3C, SMPS, crypto STM32U3C5RIT6Q STMicroelectronics 1: S/ 36.82 986In Stock New Product	Mfr. Part # STM32U3C5RIT6Q Mouser Part # 511-STM32U3C5RIT6Q New Product	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M33 with TrustZone MCU, 96 MHz, 2 MB flash, 640 KB RAM, HSP, I3C, SMPS, crypto Learn More about STMicroelectronics stm32u3 mcus	Datasheet	986In Stock	S/ 36.82 S/ 28.53 S/ 25.22 S/ 23.63 View S/ 22.27 S/ 22.03	Min.: 1 Mult.: 1	STM32U3				Tray
ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M33 with TrustZone MCU, 96 MHz, 2 MB flash, 640 KB RAM, HSP, I3C, SMPS STM32U3B5CIT6 STMicroelectronics 1: S/ 36.20 100In Stock 1,500Expected 10/29/2026 New Product	Mfr. Part # STM32U3B5CIT6 Mouser Part # 511-STM32U3B5CIT6 New Product	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M33 with TrustZone MCU, 96 MHz, 2 MB flash, 640 KB RAM, HSP, I3C, SMPS Learn More about STMicroelectronics stm32u3 mcus	Datasheet	100In Stock 1,500Expected 10/29/2026	S/ 36.20 S/ 27.91 S/ 24.72	Min.: 1 Mult.: 1 Max.: 25	STM32U3				Tray
ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M33 with TrustZone MCU, 96 MHz, 2 MB flash, 640 KB RAM, HSP, I3C, SMPS STM32U3B5CIT6Q STMicroelectronics 1: S/ 34.14 90In Stock New Product	Mfr. Part # STM32U3B5CIT6Q Mouser Part # 511-STM32U3B5CIT6Q New Product	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M33 with TrustZone MCU, 96 MHz, 2 MB flash, 640 KB RAM, HSP, I3C, SMPS Learn More about STMicroelectronics stm32u3 mcus	Datasheet	90In Stock	S/ 34.14 S/ 26.43	Min.: 1 Mult.: 1 Max.: 20	STM32U3	LQFP-48	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M33 with TrustZone MCU, 96 MHz, 2 MB flash, 640 KB RAM, HSP, I3C, SMPS STM32U3B5CIU6 STMicroelectronics 1: S/ 34.14 90In Stock New Product	Mfr. Part # STM32U3B5CIU6 Mouser Part # 511-STM32U3B5CIU6 New Product	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M33 with TrustZone MCU, 96 MHz, 2 MB flash, 640 KB RAM, HSP, I3C, SMPS Learn More about STMicroelectronics stm32u3 mcus	Datasheet	90In Stock	S/ 34.14 S/ 26.43	Min.: 1 Mult.: 1 Max.: 20	STM32U3	UFQFPN-48	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M33 with TrustZone MCU, 96 MHz, 2 MB flash, 640 KB RAM, HSP, I3C, SMPS STM32U3B5CIU6Q STMicroelectronics 1: S/ 34.14 89In Stock New Product	Mfr. Part # STM32U3B5CIU6Q Mouser Part # 511-STM32U3B5CIU6Q New Product	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M33 with TrustZone MCU, 96 MHz, 2 MB flash, 640 KB RAM, HSP, I3C, SMPS Learn More about STMicroelectronics stm32u3 mcus	Datasheet	89In Stock	S/ 34.14 S/ 26.43	Min.: 1 Mult.: 1 Max.: 20	STM32U3	UFQFPN-48	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M33 with TrustZone MCU, 96 MHz, 2 MB flash, 640 KB RAM, HSP, I3C, SMPS STM32U3B5RIT6 STMicroelectronics 1: S/ 35.69 90In Stock New Product	Mfr. Part # STM32U3B5RIT6 Mouser Part # 511-STM32U3B5RIT6 New Product	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M33 with TrustZone MCU, 96 MHz, 2 MB flash, 640 KB RAM, HSP, I3C, SMPS Learn More about STMicroelectronics stm32u3 mcus	Datasheet	90In Stock	S/ 35.69 S/ 27.68	Min.: 1 Mult.: 1 Max.: 20	STM32U3	LQFP-64	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M33 with TrustZone MCU, 96 MHz, 2 MB flash, 640 KB RAM, HSP, I3C, SMPS STM32U3B5RIT6Q STMicroelectronics 1: S/ 35.69 98In Stock New Product	Mfr. Part # STM32U3B5RIT6Q Mouser Part # 511-STM32U3B5RIT6Q New Product	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M33 with TrustZone MCU, 96 MHz, 2 MB flash, 640 KB RAM, HSP, I3C, SMPS Learn More about STMicroelectronics stm32u3 mcus	Datasheet	98In Stock	S/ 35.69 S/ 27.68	Min.: 1 Mult.: 1 Max.: 20	STM32U3	LQFP-64	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M33 with TrustZone MCU, 96 MHz, 2 MB flash, 640 KB RAM, HSP, I3C, SMPS, crypto STM32U3C5CIT6 STMicroelectronics 1: S/ 35.27 81In Stock New Product	Mfr. Part # STM32U3C5CIT6 Mouser Part # 511-STM32U3C5CIT6 New Product	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M33 with TrustZone MCU, 96 MHz, 2 MB flash, 640 KB RAM, HSP, I3C, SMPS, crypto Learn More about STMicroelectronics stm32u3 mcus	Datasheet	81In Stock	S/ 35.27 S/ 27.33 S/ 24.13 S/ 23.12 View S/ 22.07 S/ 21.45 S/ 21.18 S/ 20.79	Min.: 1 Mult.: 1	STM32U3				Tray
ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M33 with TrustZone MCU, 96 MHz, 2 MB flash, 640 KB RAM, HSP, I3C, SMPS, crypto STM32U3C5CIT6Q STMicroelectronics 1: S/ 35.27 99In Stock New Product	Mfr. Part # STM32U3C5CIT6Q Mouser Part # 511-STM32U3C5CIT6Q New Product	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M33 with TrustZone MCU, 96 MHz, 2 MB flash, 640 KB RAM, HSP, I3C, SMPS, crypto Learn More about STMicroelectronics stm32u3 mcus	Datasheet	99In Stock	S/ 35.27 S/ 27.33 S/ 24.13 S/ 23.12 View S/ 22.07 S/ 21.45 S/ 21.18 S/ 20.79	Min.: 1 Mult.: 1	STM32U3				Tray
ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M33 with TrustZone MCU, 96 MHz, 2 MB flash, 640 KB RAM, HSP, I3C, SMPS, crypto STM32U3C5CIU6 STMicroelectronics 1: S/ 35.27 89In Stock New Product	Mfr. Part # STM32U3C5CIU6 Mouser Part # 511-STM32U3C5CIU6 New Product	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M33 with TrustZone MCU, 96 MHz, 2 MB flash, 640 KB RAM, HSP, I3C, SMPS, crypto Learn More about STMicroelectronics stm32u3 mcus	Datasheet	89In Stock	S/ 35.27 S/ 27.33 S/ 24.13 S/ 23.12 View S/ 22.03 S/ 21.41 S/ 21.18 Quote	Min.: 1 Mult.: 1	STM32U3				Tray
ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M33 with TrustZone MCU, 96 MHz, 2 MB flash, 640 KB RAM, HSP, I3C, SMPS, crypto STM32U3C5CIU6Q STMicroelectronics 1: S/ 35.27 100In Stock New Product	Mfr. Part # STM32U3C5CIU6Q Mouser Part # 511-STM32U3C5CIU6Q New Product	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M33 with TrustZone MCU, 96 MHz, 2 MB flash, 640 KB RAM, HSP, I3C, SMPS, crypto Learn More about STMicroelectronics stm32u3 mcus	Datasheet	100In Stock	S/ 35.27 S/ 27.33 S/ 24.13	Min.: 1 Mult.: 1 Max.: 25	STM32U3				Tray
ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M33 with TrustZone MCU, 96 MHz, 2 MB flash, 640 KB RAM, HSP, I3C, SMPS, crypto STM32U3C5RIT6 STMicroelectronics 1: S/ 36.82 55In Stock 960Expected 10/29/2026 New Product	Mfr. Part # STM32U3C5RIT6 Mouser Part # 511-STM32U3C5RIT6 New Product	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M33 with TrustZone MCU, 96 MHz, 2 MB flash, 640 KB RAM, HSP, I3C, SMPS, crypto Learn More about STMicroelectronics stm32u3 mcus	Datasheet	55In Stock 960Expected 10/29/2026	S/ 36.82 S/ 28.53 S/ 25.22 S/ 23.63 View S/ 22.27 S/ 22.03	Min.: 1 Mult.: 1	STM32U3				Tray
ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M33 with TrustZone MCU, 96 MHz, 2 MB flash, 640 KB RAM, HSP, I3C, SMPS, crypto STM32U3C5ZIT6Q STMicroelectronics 1: S/ 45.35 78In Stock New Product	Mfr. Part # STM32U3C5ZIT6Q Mouser Part # 511-STM32U3C5ZIT6Q New Product	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M33 with TrustZone MCU, 96 MHz, 2 MB flash, 640 KB RAM, HSP, I3C, SMPS, crypto Learn More about STMicroelectronics stm32u3 mcus	Datasheet	78In Stock	S/ 45.35 S/ 35.42 S/ 31.06	Min.: 1 Mult.: 1 Max.: 25	STM32U3				Tray
ARM Microcontrollers - MCU Ultra-low-power with FPU Arm Cortex-M33 MCU 96 MHz with 512 Kbytes STM32U375CET6Q STMicroelectronics 1: S/ 21.80 1,921In Stock New Product	Mfr. Part # STM32U375CET6Q Mouser Part # 511-STM32U375CET6Q New Product	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power with FPU Arm Cortex-M33 MCU 96 MHz with 512 Kbytes Learn More about STMicroelectronics stm32u3 mcus	Datasheet	1,921In Stock	S/ 21.80 S/ 16.58 S/ 14.52 S/ 13.86 View S/ 13.04 S/ 11.99 Quote	Min.: 1 Mult.: 1	STM32U3				Tray
ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 96 MHz 1 Mbyte of Flash STM32U375CGU6Q STMicroelectronics 1: S/ 27.99 2,733In Stock New Product	Mfr. Part # STM32U375CGU6Q Mouser Part # 511-STM32U375CGU6Q New Product	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 96 MHz 1 Mbyte of Flash Learn More about STMicroelectronics stm32u3 mcus	Datasheet	2,733In Stock	S/ 27.99 S/ 21.45 S/ 18.84 S/ 18.02 View S/ 17.13 S/ 16.31 S/ 15.38 S/ 14.91	Min.: 1 Mult.: 1	STM32U3				Tray
ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 96 MHz 1 Mbyte of Flash STM32U375KGU6 STMicroelectronics 1: S/ 27.05 1,375In Stock 2,940Expected 11/23/2026 New Product	Mfr. Part # STM32U375KGU6 Mouser Part # 511-STM32U375KGU6 New Product	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 96 MHz 1 Mbyte of Flash Learn More about STMicroelectronics stm32u3 mcus	Datasheet	1,375In Stock 2,940Expected 11/23/2026	S/ 27.05 S/ 20.75 S/ 18.26 S/ 17.44 View S/ 16.15 S/ 15.61 S/ 14.01 Quote	Min.: 1 Mult.: 1	STM32U3				Tray
ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 96 MHz 1 Mbyte of Flash STM32U375RGI6Q STMicroelectronics 1: S/ 28.65 2,878In Stock New Product	Mfr. Part # STM32U375RGI6Q Mouser Part # 511-STM32U375RGI6Q New Product	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 96 MHz 1 Mbyte of Flash Learn More about STMicroelectronics stm32u3 mcus	Datasheet	2,878In Stock	S/ 28.65 S/ 22.03 S/ 19.38 S/ 18.57 View S/ 18.26 S/ 16.78 S/ 15.88 S/ 15.80 Quote	Min.: 1 Mult.: 1	STM32U3				Tray
ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 96 MHz 1 Mbyte of Flash STM32U375RGT6 STMicroelectronics 1: S/ 30.09 1,956In Stock New Product	Mfr. Part # STM32U375RGT6 Mouser Part # 511-STM32U375RGT6 New Product	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 96 MHz 1 Mbyte of Flash Learn More about STMicroelectronics stm32u3 mcus	Datasheet	1,956In Stock	S/ 30.09 S/ 22.19 S/ 20.16 S/ 18.26 View S/ 18.10 S/ 16.74	Min.: 1 Mult.: 1	STM32U3				Tray
ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 96 MHz 1 Mbyte of Flash STM32U375RGT6Q STMicroelectronics 1: S/ 29.66 1,368In Stock New Product	Mfr. Part # STM32U375RGT6Q Mouser Part # 511-STM32U375RGT6Q New Product	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 96 MHz 1 Mbyte of Flash Learn More about STMicroelectronics stm32u3 mcus	Datasheet	1,368In Stock	S/ 29.66 S/ 22.46 S/ 20.05 S/ 17.91 S/ 14.71	Min.: 1 Mult.: 1	STM32U3				Tray
ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 96 MHz 1 Mbyte of Flash STM32U375VET6 STMicroelectronics 1: S/ 30.32 885In Stock New Product	Mfr. Part # STM32U375VET6 Mouser Part # 511-STM32U375VET6 New Product	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 96 MHz 1 Mbyte of Flash Learn More about STMicroelectronics stm32u3 mcus	Datasheet	885In Stock	S/ 30.32 S/ 21.18 S/ 20.20 S/ 17.67 View S/ 16.31 S/ 15.18 S/ 14.99 Quote	Min.: 1 Mult.: 1	STM32U3				Tray
ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 96 MHz 1 Mbyte of Flash STM32U375VGT6 STMicroelectronics 1: S/ 31.37 630In Stock New Product	Mfr. Part # STM32U375VGT6 Mouser Part # 511-STM32U375VGT6 New Product	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 96 MHz 1 Mbyte of Flash Learn More about STMicroelectronics stm32u3 mcus	Datasheet	630In Stock	S/ 31.37 S/ 24.21 S/ 21.33 S/ 20.86 View S/ 20.82 S/ 19.31 S/ 17.98 Quote	Min.: 1 Mult.: 1	STM32U3				Tray
ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 96 MHz 1 Mbyte of Flash STM32U375VGT6Q STMicroelectronics 1: S/ 31.37 1,063In Stock New Product	Mfr. Part # STM32U375VGT6Q Mouser Part # 511-STM32U375VGT6Q New Product	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 96 MHz 1 Mbyte of Flash Learn More about STMicroelectronics stm32u3 mcus	Datasheet	1,063In Stock	S/ 31.37 S/ 24.21 S/ 20.55 S/ 20.20 View S/ 19.93 S/ 19.23 S/ 18.14 Quote	Min.: 1 Mult.: 1	STM32U3				Tray
ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 96 MHz 1 Mbyte of Flash STM32U385CGT6 STMicroelectronics 1: S/ 27.52 789In Stock New Product	Mfr. Part # STM32U385CGT6 Mouser Part # 511-STM32U385CGT6 New Product	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 96 MHz 1 Mbyte of Flash Learn More about STMicroelectronics stm32u3 mcus	Datasheet	789In Stock	S/ 27.52 S/ 21.14 S/ 18.57 S/ 17.79 View S/ 17.48 S/ 16.43 S/ 16.39	Min.: 1 Mult.: 1	STM32U3				Tray
ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 96 MHz 1 Mbyte of Flash STM32U385CGT6Q STMicroelectronics 1: S/ 27.52 1,542In Stock New Product	Mfr. Part # STM32U385CGT6Q Mouser Part # 511-STM32U385CGT6Q New Product	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power FPU Arm Cortex-M33 Trust Zone, MCU 96 MHz 1 Mbyte of Flash Learn More about STMicroelectronics stm32u3 mcus	Datasheet	1,542In Stock	S/ 27.52 S/ 21.14 S/ 18.57 S/ 17.79 View S/ 16.93 S/ 16.43 S/ 16.39	Min.: 1 Mult.: 1	STM32U3				Tray

STM32U3 Ultra-Low-Power 32-Bit Microcontrollers

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