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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STMicroelectronics ARM Microcontrollers - MCU 32BIT Cortex 64/25 CONNECTIVITY LINE M3
Datasheet
538In Stock
Min.: 1
Mult.: 1

SMD/SMT LQFP-100 ARM Cortex M3 32 bit 72 MHz 128 kB 64 kB 12 bit 80 I/O 2 V 3.6 V + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU STM32F105 Conn Line M3 256kB 72 MHz MCU
Datasheet
1,739In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

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 Reel, Cut Tape, MouseReel
STMicroelectronics ARM Microcontrollers - MCU Mainstream Connectivity line, Arm Cortex-M3 MCU 256 Kbytes of Flash 72 MHz CPU,
Datasheet
474In 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 + 105 C Tray
STMicroelectronics ARM Microcontrollers - MCU 32-Bit ARM Cortex 128kb Connectivity
Datasheet
1,490In Stock
Min.: 1
Mult.: 1

SMD/SMT LQFP-64 ARM Cortex M3 32 bit 120 MHz 128 kB 64 kB 12 bit 51 I/O 1.8 V 3.6 V + 105 C Tray
STMicroelectronics ARM Microcontrollers - MCU 32BIT ARM Cortex M3 Connectivity 256kB
Datasheet
1,251In Stock
Min.: 1
Mult.: 1

SMD/SMT LQFP-64 ARM Cortex M3 32 bit 120 MHz 256 kB 96 kB 12 bit 51 I/O 1.8 V 3.6 V + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU High-performance Arm Cortex-M3 MCU 256 Kbytes of Flash , 120 MHz CPU, ART Accel
Datasheet
785In Stock
Min.: 1
Mult.: 1

SMD/SMT LQFP-64 ARM Cortex M3 32 bit 120 MHz 256 kB 96 kB 12 bit 51 I/O 1.8 V 3.6 V + 105 C Tray
STMicroelectronics ARM Microcontrollers - MCU 32BIT ARM Cortex M3 Connectivity 512kB
Datasheet
36In Stock
960On Order
Min.: 1
Mult.: 1

SMD/SMT LQFP-64 ARM Cortex M3 32 bit 120 MHz 512 kB 128 kB 12 bit 51 I/O 1.8 V 3.6 V + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU High-performance Arm Cortex-M3 MCU 512 Kbytes of Flash , 120 MHz CPU, ART Accel
Datasheet
653In Stock
Min.: 1
Mult.: 1

LQFP-64 Tray
STMicroelectronics ARM Microcontrollers - MCU 32BIT ARM Cortex M3 Connectivity 128kB
Datasheet
282In Stock
Min.: 1
Mult.: 1

SMD/SMT LQFP-100 ARM Cortex M3 32 bit 120 MHz 128 kB 64 kB 12 bit 82 I/O 1.8 V 3.6 V + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU 32BIT ARM Cortex M3 Connectivity 512kB
Datasheet
1,768In Stock
Min.: 1
Mult.: 1

SMD/SMT LQFP-100 ARM Cortex M3 32 bit 120 MHz 512 kB 128 kB 12 bit 82 I/O 1.8 V 3.6 V + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU 32BIT ARM Cortex M3 Connectivity 1024kB
Datasheet
449In Stock
Min.: 1
Mult.: 1

SMD/SMT LQFP-100 ARM Cortex M3 32 bit 120 MHz 1 MB 132 kB 12 bit 82 I/O 1.8 V 3.6 V + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU Hi-perf ARM Cortex M3 MCU 512Kb
Datasheet
295In 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 + 105 C Tray
STMicroelectronics ARM Microcontrollers - MCU 32-Bit ARM Cortex M3 CAM 1024 kB
Datasheet
667In Stock
Min.: 1
Mult.: 1

SMD/SMT BGA-176 ARM Cortex M3 32 bit 120 MHz 1 MB 128 kB 12 bit 140 I/O 1.8 V 3.6 V + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU 32BIT ARM Cortex M3 Connectivity 1024kB
Datasheet
407In Stock
Min.: 1
Mult.: 1

SMD/SMT LQFP-176 ARM Cortex M3 32 bit 120 MHz 1 MB 128 kB 12 bit 140 I/O 1.8 V 3.6 V + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU Hi-perf ARM Cortex M3 MCU 1 Mb
Datasheet
320In Stock
Min.: 1
Mult.: 1

SMD/SMT LQFP-176 ARM Cortex M3 32 bit 120 MHz 1 MB 128 kB 12 bit 140 I/O 1.8 V 3.6 V + 105 C Tray
STMicroelectronics ARM Microcontrollers - MCU ARM Cortex-M3 MCU 1Mb Flash 120MHz
Datasheet
313In Stock
2,000Expected 24/4/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

SMD/SMT LQFP-100 ARM Cortex M3 32 bit 120 MHz 1 MB 132 kB 12 bit 82 I/O 1.8 V 3.6 V + 85 C Reel, Cut Tape, MouseReel
STMicroelectronics ARM Microcontrollers - MCU 32BIT ARM Cortex M3 Connectivity 1024kB
Datasheet
160In Stock
Min.: 1
Mult.: 1

SMD/SMT LQFP-144 ARM Cortex M3 32 bit 120 MHz 1 MB 128 kB 12 bit 114 I/O 1.8 V 3.6 V + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU 32BIT ARM Cortex M3 Connectivity 1024kB
Datasheet
241In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 500

SMD/SMT LQFP-144 ARM Cortex M3 32 bit 120 MHz 1 MB 128 kB 12 bit 114 I/O 1.8 V 3.6 V + 85 C Reel, Cut Tape, MouseReel
STMicroelectronics ARM Microcontrollers - MCU 32-Bit ARM Cortex 1024kb Connectivity
Datasheet
397In Stock
Min.: 1
Mult.: 1

SMD/SMT LQFP-144 ARM Cortex M3 32 bit 120 MHz 1 MB 128 kB 12 bit 114 I/O 1.8 V 3.6 V + 105 C Tray
STMicroelectronics ARM Microcontrollers - MCU 32BIT ARM Cortex M3 Connectivity 512kB
Datasheet
1,028In Stock
Min.: 1
Mult.: 1

SMD/SMT LQFP-64 ARM Cortex M3 32 bit 120 MHz 512 kB 128 kB 12 bit 51 I/O 1.8 V 3.6 V + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU 32BIT ARM Cortex M3 Connectivity 1024kB
Datasheet
504In 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 32BIT ARM Cortex M3 Connectivity 1024kB
Datasheet
233In Stock
Min.: 1
Mult.: 1

SMD/SMT LQFP-100 ARM Cortex M3 32 bit 120 MHz 1 MB 128 kB 12 bit 82 I/O 1.8 V 3.6 V + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU 32BIT ARM Cortex M3 Connectivity 1024kB
Datasheet
605In Stock
Min.: 1
Mult.: 1

SMD/SMT LQFP-144 ARM Cortex M3 32 bit 120 MHz 1 MB 128 kB 12 bit 114 I/O 1.8 V 3.6 V + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU 32BIT ARM Cortex M3 Connectivity 512kB
Datasheet
186In Stock
Min.: 1
Mult.: 1

SMD/SMT LQFP-100 ARM Cortex M3 32 bit 120 MHz 512 kB 128 kB 12 bit 82 I/O 1.8 V 3.6 V + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU Mainstream Mixed signals MCUs Arm Cortex-M4 core DSP & FPU, 64 Kbytes of Flash 7
Datasheet
1,745In Stock
Min.: 1
Mult.: 1

SMD/SMT LQFP-48 ARM Cortex M4 32 bit 72 MHz 64 kB 16 kB 12 bit 37 I/O 2 V 3.6 V + 85 C Tray