ARM Cortex M3 Core Microcontrollers - MCU

Types of Microcontrollers - MCU
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Description Datasheet Availability Pricing (USD) Filter the results in the table by unit price based on your quantity.
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Data Bus Width
Maximum Clock Frequency
Program Memory Size
Data RAM Size
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Supply Voltage - Max
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STMicroelectronics ARM Microcontrollers - MCU 32BIT Cortex M3 384Kb Flash MCU
Datasheet
2,208Expected 2026/11/27
Min.: 1
Mult.: 1

SMD/SMT BGA-144 ARM Cortex M3 32 bit 72 MHz 384 kB 64 kB 12 bit 112 I/O 2 V 3.6 V + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU 32BIT Cortex M3 STM32F103 Eval BRD
Datasheet
2,206Expected 2026/09/21
Min.: 1
Mult.: 1

SMD/SMT BGA-144 ARM Cortex M3 32 bit 72 MHz 512 kB 64 kB 12 bit 112 I/O 2 V 3.6 V + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU 32BIT Cortex 64/25 CONNECTIVITY LINE M3
Datasheet
3,689On Order
Min.: 1
Mult.: 1

SMD/SMT LQFP-64 ARM Cortex M3 32 bit 72 MHz 128 kB 64 kB 12 bit 51 I/O 2 V 3.6 V + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU Ultra-low-power 32-bit Value Line Arm Cortex-M3 MCU 64 Kbytes of Flash 32 MHz CP
Datasheet
4,800On Order
Min.: 1
Mult.: 1

SMD/SMT LQFP-64 ARM Cortex M3 32 bit 32 MHz 64 kB 8 kB 12 bit 51 I/O 1.8 V 3.6 V + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M3 MCU 128 Kbytes of Flash , 32 MHz CPU, USB
Datasheet
4,499On Order
MouseReel Available
Min.: 1
Mult.: 1
: 2,400

SMD/SMT LQFP-48 ARM Cortex M3 32 bit 32 MHz 128 kB 16 kB 12 bit 37 I/O 1.8 V 3.6 V + 85 C Reel, Cut Tape, MouseReel
STMicroelectronics ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M3 MCU 512 Kbytes of Flash 32 MHz CPU, USB, 2xOp-amp
Datasheet
2,496Expected 2026/12/10
Min.: 1
Mult.: 1

SMD/SMT BGA-132 ARM Cortex M3 32 bit 32 MHz 512 kB 80 kB 12 bit 109 I/O 1.65 V 3.6 V + 85 C Tray
Infineon Technologies ARM Microcontrollers - MCU PSOC 5LP ANLOG 67MHZ,256K FLASH
Datasheet
3,133Expected 2026/09/24
Min.: 1
Mult.: 1

SMD/SMT TQFP-100 ARM Cortex M3 32 bit 67 MHz 256 kB 64 kB 12 bit 72 I/O 1.71 V 1.89 V + 85 C Tray
Infineon Technologies ARM Microcontrollers - MCU MM-LEGACY PSOC135
Datasheet
1,997Expected 2026/09/17
Min.: 1
Mult.: 1
: 2,000

SMD/SMT WLCSP-99 ARM Cortex M3 32 bit 80 MHz 256 kB 64 kB 12 bit 62 I/O 1.71 V 1.89 V + 85 C Reel, Cut Tape
Infineon Technologies ARM Microcontrollers - MCU 256K Flash 64K SRAM PSoC 5LP
Datasheet
6,397On Order
Min.: 1
Mult.: 1

SMD/SMT TQFP-100 ARM Cortex M3 32 bit 67 MHz 256 kB 64 kB 12 bit 62 I/O 1.71 V 1.89 V + 85 C Tray

Infineon Technologies ARM Microcontrollers - MCU 256K Flash 64K SRAM PSoC 5LP
Datasheet
1,459Expected 2026/10/08
Min.: 1
Mult.: 1

SMD/SMT QFN-68 ARM Cortex M3 32 bit 67 MHz 256 kB 64 kB 12 bit 48 I/O 1.71 V 1.89 V + 85 C Tray

Infineon Technologies ARM Microcontrollers - MCU 256K Flash 64K SRAM PSoC 5LP
Datasheet
996On Order
Min.: 1
Mult.: 1

SMD/SMT QFN-68 ARM Cortex M3 32 bit 67 MHz 256 kB 64 kB 12 bit 48 I/O 1.71 V 1.89 V + 85 C Tray
Infineon Technologies ARM Microcontrollers - MCU 256KB Flash 64KBSRAM PSoC 5LP
Datasheet
3,280On Order
Min.: 1
Mult.: 1

SMD/SMT TQFP-100 ARM Cortex M3 32 bit 80 MHz 256 kB 64 kB 12 bit 62 I/O 1.71 V 1.89 V + 85 C Tray
Infineon Technologies ARM Microcontrollers - MCU MM-LEGACY PSOC135
Datasheet
1,995On Order
Min.: 1
Mult.: 1
: 2,000

SMD/SMT WLCSP-99 ARM Cortex M3 32 bit 80 MHz 256 kB 64 kB 12 bit 62 I/O 1.71 V 1.89 V + 85 C Reel, Cut Tape
Infineon Technologies ARM Microcontrollers - MCU MM-LEGACY PSOC135
Datasheet
2,000Expected 2026/09/10
MouseReel Available
Min.: 1
Mult.: 1
: 2,000

SMD/SMT WLCSP-99 ARM Cortex M3 32 bit 80 MHz 256 kB 64 kB 12 bit 62 I/O 1.71 V 1.89 V + 85 C Reel, Cut Tape, MouseReel

Infineon Technologies ARM Microcontrollers - MCU 256KB Flash 64KBSRAM PSoC 5LP
Datasheet
4,110On Order
Min.: 1
Mult.: 1

SMD/SMT QFN-68 ARM Cortex M3 32 bit 80 MHz 256 kB 64 kB 12 bit 38 I/O 1.71 V 1.89 V + 85 C Tray
Microchip Technology ARM Microcontrollers - MCU 256K Flash, 52K SRAM 32-bit ARM Cortex M3
Datasheet
368Expected 2027/03/15
Min.: 1
Mult.: 1

SMD/SMT LFBGA-144 ARM Cortex M3 32 bit 96 MHz 256 kB 52 kB 12 bit 96 I/O 1.62 V 1.95 V + 85 C Tray

Silicon Labs ARM Microcontrollers - MCU 1024k Flash, 128k RAM, AES
Datasheet
1,298Expected 2026/08/18
Min.: 1
Mult.: 1

SMD/SMT QFN-64 ARM Cortex M3 32 bit 48 MHz 1.02 MB 128 kB 12 bit 56 I/O 1.98 V 3.8 V + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU Mainstream Valueline ARM Cortex-M3 MCU
Datasheet
258In Stock
Min.: 1
Mult.: 1

SMD/SMT ARM Cortex M3 32 bit 24 MHz 128 kB 8 kB 12 bit 80 I/O 2 V 3.6 V + 105 C Tray
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 32BIT CORTEX M3 48PINS 16KB
Datasheet
2,997Expected 2027/01/18
Min.: 1
Mult.: 1

SMD/SMT LQFP-48 ARM Cortex M3 32 bit 24 MHz 16 kB 4 kB 12 bit 37 I/O 2 V 3.6 V + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU ARM Cortex M3 32kB 24 MHz 12 Timers
Datasheet
978Expected 2027/04/05
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

SMD/SMT ARM Cortex M3 32 bit 24 MHz 128 kB 4 kB 12 bit 51 I/O 2 V 3.6 V + 85 C Reel, Cut Tape, MouseReel
STMicroelectronics ARM Microcontrollers - MCU 32BIT Cortex M3 High-density access
Datasheet
1,998Expected 2027/03/08
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

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 Reel, Cut Tape, MouseReel
STMicroelectronics ARM Microcontrollers - MCU 32BIT Cortex M3 H/D ACCESS USB MCU
Datasheet
2,157On Order
Min.: 1
Mult.: 1

SMD/SMT LQFP-100 ARM Cortex M3 32 bit 36 MHz 256 kB 32 kB 12 bit 80 I/O 2 V 3.6 V + 85 C Tray
STMicroelectronics ARM Microcontrollers - MCU ARM 32Bit Access MCU 100-Pin 256kB Flash
Datasheet
999On Order
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

SMD/SMT LQFP-100 ARM Cortex M3 32 bit 36 MHz 256 kB 32 kB 12 bit 80 I/O 2 V 3.6 V + 85 C Reel, Cut Tape, MouseReel
STMicroelectronics ARM Microcontrollers - MCU 32-Bit ARM Cortex 128kb Performance
Datasheet
3,114On Order
Min.: 1
Mult.: 1

SMD/SMT UQFN-48 ARM Cortex M3 32 bit 72 MHz 128 kB 20 kB 12 bit 37 I/O 2 V 3.6 V + 85 C Tray