STM32 32-Bit Arm® Cortex®-M MCUs

STMicroelectronics STM32 32-Bit Arm® Cortex®-M MCUs are based on the Arm Cortex-M processor and designed to offer new degrees of freedom to MCU users. The MCUs offer a 32-bit product range that combines very high performance, real-time capabilities, digital signal processing, and low-power, low-voltage operation. This is achieved while maintaining full integration and ease of development. 

Types of Microcontrollers - MCU
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Description Datasheet Availability Pricing (CAD) Filter the results in the table by unit price based on your quantity.
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Supply Voltage - Max
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STMicroelectronics ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M0+ MCU 64 Kbytes of Flash , 32 MHz CPU, USB, AES
Datasheet
544In Stock
Min.: 1
Mult.: 1

SMD/SMT UFQFPN-32 ARM Cortex M0+ 32 bit 32 MHz 64 kB 8 kB 12 bit 27 I/O 1.8 V 3.6 V + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU Ultra-low-power 32-bit Value Line Arm Cortex-M3 MCU 256 Kbytes of Flash 32 MHz C
Datasheet
413In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

SMD/SMT LQFP-64 ARM Cortex M3 32 bit 32 MHz 256 kB 16 kB 12 bit 51 I/O 1.8 V 3.6 V + 85 C Reel, Cut Tape, MouseReel
STMicroelectronics ARM Microcontrollers - MCU Ultra Low M3 ARM 256 Kbytes 32 MHz
Datasheet
149In Stock
960Expected 2026-04-16
Min.: 1
Mult.: 1

SMD/SMT LQFP-64 ARM Cortex M3 32 bit 32 MHz 256 kB 32 kB 12 bit 51 I/O 1.65 V 3.6 V + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU 32BIT CORTEX M3 256K Flash 6KB RAM
Datasheet
121In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

SMD/SMT LQFP-64 ARM Cortex M3 32 bit 24 MHz 256 kB 24 kB 12 bit 51 I/O 2 V 3.6 V + 85 C Reel, Cut Tape, MouseReel
STMicroelectronics ARM Microcontrollers - MCU High-performance Arm Cortex-M3 MCU 1 Mbyte of Flash , 120 MHz CPU, ART Accel
Datasheet
44In Stock
Min.: 1
Mult.: 1

SMD/SMT LQFP-64 ARM Cortex M3 32 bit 120 MHz 1 MB 128 kB 12 bit 51 I/O 1.8 V 3.6 V + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU 32-Bit ARM Cortex 32kb Low Power MCU
Datasheet
297In Stock
Min.: 1
Mult.: 1

ARM Cortex M3 32 bit 1.65 V 3.6 V + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU 32-Bit Arm Cortex M3 64kb Ultralow Power
Datasheet
197In Stock
Min.: 1
Mult.: 1

SMD/SMT ARM Cortex M3 32 bit 32 MHz 64 kB 10 kB 12 bit 51 I/O 1.8 V 3.6 V + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU Entry-level ARM Cortex-M0 MCU 64Kb
Datasheet
213In Stock
Min.: 1
Mult.: 1

SMD/SMT LQFP-64 ARM Cortex M0 32 bit 48 MHz 64 kB 8 kB 12 bit 55 I/O 2 V 3.6 V + 105 C
STMicroelectronics ARM Microcontrollers - MCU 32-Bit ARM Cortex 64 Kbyte Value Line
Datasheet
28In Stock
Min.: 1
Mult.: 1

SMD/SMT ARM Cortex M3 32 bit 24 MHz 64 kB 8 kB 12 bit 37 I/O 2 V 3.6 V + 105 C Tray
STMicroelectronics ARM Microcontrollers - MCU 32BIT Cortex M3 H/D ACCESS USB MCU
Datasheet
100In Stock
Min.: 1
Mult.: 1

SMD/SMT LQFP-144 ARM Cortex M3 32 bit 36 MHz 256 kB 32 kB 12 bit 112 I/O 2 V 3.6 V + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU ARM M4 512 FLASH 168 Mhz 192kB SRAM
Datasheet
89In Stock
Min.: 1
Mult.: 1

SMD/SMT LQFP-144 ARM Cortex M4 32 bit 168 MHz 512 kB 192 kB 3 x 12 bit 114 I/O 1.8 V 3.6 V + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU Hi-performance DSP FPU ARM CortexM4 MCU
Datasheet
29In Stock
Min.: 1
Mult.: 1

SMD/SMT BGA-176 ARM Cortex M4 32 bit 180 MHz 2 MB 260 kB 12 bit 140 I/O 1.7 V 3.6 V + 105 C Tray
STMicroelectronics ARM Microcontrollers - MCU DSP FPU ARM CortexM4 2Mb Flash 180MHz
Datasheet
43In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,500

SMD/SMT BGA-176 ARM Cortex M4 32 bit 180 MHz 2 MB 260 kB 12 bit 140 I/O 1.7 V 3.6 V + 85 C Reel, Cut Tape, MouseReel
STMicroelectronics ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M3 MCU 256 Kbytes of Flash 32 MHz CPU, USB, 2xOp-amp
Datasheet
3In Stock
Min.: 1
Mult.: 1

UFQPFN-48 1.65 V 3.6 V Tray
STMicroelectronics ARM Microcontrollers - MCU Value Line ARM 32Bit 64kB Flash 48-Pin
Datasheet
1,012In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,400

SMD/SMT ARM Cortex M3 32 bit 24 MHz 64 kB 8 kB 12 bit 37 I/O 2 V 3.6 V + 105 C Reel, Cut Tape, MouseReel
STMicroelectronics ARM Microcontrollers - MCU 32-Bit ARM Cortex 512 Kbyte Value Line
Datasheet
491In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

SMD/SMT LQFP-64 ARM Cortex M3 32 bit 24 MHz 512 kB 32 kB 12 bit 51 I/O 2 V 3.6 V + 85 C Reel, Cut Tape, MouseReel
STMicroelectronics ARM Microcontrollers - MCU 32BIT Cortex M3 Access Line
Datasheet
975In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,400

SMD/SMT LQFP-48 ARM Cortex M3 32 bit 36 MHz 128 kB 16 kB 12 bit 37 I/O 2 V 3.6 V + 85 C Reel, Cut Tape, MouseReel
STMicroelectronics ARM Microcontrollers - MCU Mainstream Connectivity line, Arm Cortex-M3 MCU 256 Kbytes of Flash 72 MHz CPU,
Datasheet
515In Stock
Min.: 1
Mult.: 1

SMD/SMT LQFP-100 ARM Cortex M3 32 bit 72 MHz 256 kB 64 kB 12 bit 80 I/O 2 V 3.6 V + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU 32BIT ARM Cortex M3 Connectivity 512kB
Datasheet
218In Stock
Min.: 1
Mult.: 1

SMD/SMT LQFP-144 ARM Cortex M3 32 bit 120 MHz 512 kB 128 kB 12 bit 114 I/O 1.8 V 3.6 V + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU ARM M4 1024 FLASH 168 Mhz 192kB SRAM
Datasheet
23,031On Order
Min.: 1
Mult.: 1

SMD/SMT LQFP-64 ARM Cortex M4 32 bit 168 MHz 1 MB 192 kB 12 bit 51 I/O 1.8 V 3.6 V + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU ARM M4 1024 FLASH 168 Mhz 192kB SRAM
Datasheet
1,915Expected 2026-04-06
Min.: 1
Mult.: 1

SMD/SMT UFBGA-176 ARM Cortex M4 32 bit 168 MHz 1 MB 192 kB 12 bit 140 I/O 1.8 V 3.6 V + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU 32B Cortex-M3 LCD 384Kb Flsh 32MHz CPU
Datasheet
190In Stock
Min.: 1
Mult.: 1

SMD/SMT LQFP-100 ARM Cortex M3 32 bit 32 MHz 256 kB 32 kB 12 bit 83 I/O 1.8 V 3.6 V + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU Cortex M0 32kB 48MHz Motor CTRL SRAM MCU
Datasheet
2,940Expected 2026-07-20
Min.: 1
Mult.: 1

SMD/SMT UFQFPN-28 ARM Cortex M0 32 bit 48 MHz 32 kB 4 kB 12 bit 23 I/O 2 V 3.6 V + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU 32BIT Cortex M3 H/D ACCESS USB MCU
Datasheet
1,912Expected 2026-03-17
Min.: 1
Mult.: 1

SMD/SMT LQFP-64 ARM Cortex M3 32 bit 36 MHz 256 kB 32 kB 12 bit 51 I/O 2 V 3.6 V + 85 C Tray

STMicroelectronics ARM Microcontrollers - MCU 32-Bit ARM Cortex MED Density 128kb PL
Datasheet
2,896Expected 2026-07-14
Min.: 1
Mult.: 1

SMD/SMT VFQFPN-36 ARM Cortex M3 32 bit 72 MHz 128 kB 20 kB 12 bit 26 I/O 2 V 3.6 V + 105 C Tray