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ARM Cortex M3 Core Microcontrollers - MCU

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (GBP) Filter the results in the table by unit price based on your quantity.	Qty.	Mounting Style	Package/Case	Core	Data Bus Width	Maximum Clock Frequency	Program Memory Size	Data RAM Size	ADC Resolution	Number of I/Os	Supply Voltage - Min	Supply Voltage - Max	Maximum Operating Temperature	Packaging
ARM Microcontrollers - MCU 32BIT Cortex M3 L/D PERF LN 36 PIN 32KB STM32F103T6U6A STMicroelectronics 1: £5.85 42In Stock 2,940Expected 11/10/2027	Mfr. Part No. STM32F103T6U6A Mouser Part No 511-STM32F103T6U6A	STMicroelectronics	ARM Microcontrollers - MCU 32BIT Cortex M3 L/D PERF LN 36 PIN 32KB Learn More about STMicroelectronics stm32f1	Datasheet	42In Stock 2,940Expected 11/10/2027	£5.85 £4.30 £4.00 £3.52 View £3.34 £2.99 £2.87 £2.78	Min.: 1 Mult.: 1	SMD/SMT	UFQFPN-36	ARM Cortex M3	32 bit	72 MHz	32 kB	10 kB	12 bit	26 I/O	2 V	3.6 V	+ 85 C	Tray
ARM Microcontrollers - MCU 32BIT CORTEX M3 128K Flash 20KB RAM STM32F103TBU6 STMicroelectronics 1: £5.74 5In Stock 5,880Expected 16/03/2027	Mfr. Part No. STM32F103TBU6 Mouser Part No 511-STM32F103TBU6	STMicroelectronics	ARM Microcontrollers - MCU 32BIT CORTEX M3 128K Flash 20KB RAM Learn More about STMicroelectronics stm32f1	Datasheet	5In Stock 5,880Expected 16/03/2027	£5.74 £4.80 £4.23 £4.06 View £3.77 £3.68	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	+ 85 C	Tray
ARM Microcontrollers - MCU Mainstream Performance line, Arm Cortex-M3 MCU 128 Kbytes of Flash 72 MHz CPU, m STM32F103TBU6TR STMicroelectronics 1: £6.65 33In Stock 6,000On Order	Mfr. Part No. STM32F103TBU6TR Mouser Part No 511-STM32F103TBU6TR	STMicroelectronics	ARM Microcontrollers - MCU Mainstream Performance line, Arm Cortex-M3 MCU 128 Kbytes of Flash 72 MHz CPU, m Learn More about STMicroelectronics stm32f1	Datasheet	33In Stock 6,000On Order On Order Ship Dates Mfr. No: STM32F103TBU6TR Stock: 33 Can Dispatch Immediately On Order: 3,000 Expected 02/02/2027 3,000 Expected 16/03/2027 Factory Lead Time: 40 Weeks	Cut Tape £6.65 £5.10 £4.65 £4.22 View Reel £3.56 £4.09 £3.76 £3.56 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	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	+ 85 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU 32BIT Cortex M3 64KB 20KB RAM 2X12 ADC STM32F103V8T6 STMicroelectronics 1: £7.15 26In Stock 540Expected 11/03/2027	Mfr. Part No. STM32F103V8T6 Mouser Part No 511-STM32F103V8T6	STMicroelectronics	ARM Microcontrollers - MCU 32BIT Cortex M3 64KB 20KB RAM 2X12 ADC Learn More about STMicroelectronics stm32f1	Datasheet	26In Stock 540Expected 11/03/2027	£7.15 £5.36 £5.12 £4.37 View £4.14 £4.03	Min.: 1 Mult.: 1	SMD/SMT	LQFP-100	ARM Cortex M3	32 bit	72 MHz	64 kB	20 kB	12 bit	100 I/O	2 V	3.6 V	+ 85 C	Tray
ARM Microcontrollers - MCU 32-Bit ARM Cortex High Density 512kb STM32F103VET7TR STMicroelectronics 1: £10.56 265In Stock	Mfr. Part No. STM32F103VET7TR Mouser Part No 511-STM32F103VET7TR	STMicroelectronics	ARM Microcontrollers - MCU 32-Bit ARM Cortex High Density 512kb Learn More about STMicroelectronics stm32f1	Datasheet	265In Stock	Cut Tape £10.56 £8.28 £7.66 £7.08 View Reel £6.08 £6.83 £6.60 £6.08 Quote MouseReel Available	Min.: 1 Mult.: 1 : 1,000	SMD/SMT	LQFP-100	ARM Cortex M3	32 bit	72 MHz	512 kB	64 kB	12 bit		2 V	3.6 V	+ 105 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU XL-Density Access Line 32-Bit 768 Kb STM32F103VFT6 STMicroelectronics 1: £11.40 17In Stock 1,080Expected 19/04/2027	Mfr. Part No. STM32F103VFT6 Mouser Part No 511-STM32F103VFT6	STMicroelectronics	ARM Microcontrollers - MCU XL-Density Access Line 32-Bit 768 Kb Learn More about STMicroelectronics stm32f1	Datasheet	17In Stock 1,080Expected 19/04/2027	£11.40 £8.70 £8.05 £7.69 £7.16	Min.: 1 Mult.: 1	SMD/SMT	LQFP-100	ARM Cortex M3	32 bit	72 MHz	768 kB	96 kB	12 bit	112 I/O	2 V	3.6 V	+ 85 C	Tray
ARM Microcontrollers - MCU 32-Bit ARM Cortex XL Density 768kb PL STM32F103VFT6TR STMicroelectronics 1: £11.26 54In Stock 2,000Expected 27/01/2027	Mfr. Part No. STM32F103VFT6TR Mouser Part No 511-STM32F103VFT6TR	STMicroelectronics	ARM Microcontrollers - MCU 32-Bit ARM Cortex XL Density 768kb PL Learn More about STMicroelectronics stm32f1	Datasheet	54In Stock 2,000Expected 27/01/2027	Cut Tape £11.26 £9.09 £8.18 £7.64 £7.14 Reel £6.98 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	SMD/SMT	LQFP-100	ARM Cortex M3	32 bit	72 MHz	768 kB	96 kB	12 bit	80 I/O	2 V	3.6 V	+ 85 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU Perform ARM 32Bit 768kB Flash 100-Pin STM32F103VFT7 STMicroelectronics 1: £12.03 311In Stock	Mfr. Part No. STM32F103VFT7 Mouser Part No 511-STM32F103VFT7	STMicroelectronics	ARM Microcontrollers - MCU Perform ARM 32Bit 768kB Flash 100-Pin Learn More about STMicroelectronics stm32f1	Datasheet	311In Stock	£12.03 £8.88 £8.21 £7.65 View £7.26 Quote	Min.: 1 Mult.: 1	SMD/SMT	LQFP-100	ARM Cortex M3	32 bit	72 MHz	768 kB	96 kB	12 bit	80 I/O	2 V	3.6 V	+ 105 C	Tray
ARM Microcontrollers - MCU Mainstream Performance line, Arm Cortex-M3 MCU 1 Mbyte of Flash 72 MHz CPU, moto STM32F103VGT6TR STMicroelectronics 1: £10.86 16In Stock 1,000Expected 07/06/2027	Mfr. Part No. STM32F103VGT6TR Mouser Part No 511-STM32F103VGT6TR	STMicroelectronics	ARM Microcontrollers - MCU Mainstream Performance line, Arm Cortex-M3 MCU 1 Mbyte of Flash 72 MHz CPU, moto Learn More about STMicroelectronics stm32f1	Datasheet	16In Stock 1,000Expected 07/06/2027	Cut Tape £10.86 £9.91 £8.68 £8.35 £7.81 Reel £7.64	Min.: 1 Mult.: 1 : 1,000	SMD/SMT	LQFP-144	ARM Cortex M3	32 bit	72 MHz	1 MB	96 kB	12 bit	112 I/O	2 V	3.6 V	+ 85 C	Reel, Cut Tape
ARM Microcontrollers - MCU Mainstream Performance line, Arm Cortex-M3 MCU 256 Kbytes of Flash 72 MHz CPU, m STM32F103ZCT7TR STMicroelectronics 1: £10.18 59In Stock 500On Order	Mfr. Part No. STM32F103ZCT7TR Mouser Part No 511-STM32F103ZCT7TR	STMicroelectronics	ARM Microcontrollers - MCU Mainstream Performance line, Arm Cortex-M3 MCU 256 Kbytes of Flash 72 MHz CPU, m Learn More about STMicroelectronics stm32f1	Datasheet	59In Stock 500On Order	Cut Tape £10.18 £7.99 £7.11 £6.84 £6.77 Reel £6.37 MouseReel Available	Min.: 1 Mult.: 1 : 500	SMD/SMT	LQFP-144	ARM Cortex M3	32 bit	72 MHz	256 kB	64 kB	12 bit	112 I/O	2 V	3.6 V	+ 105 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU 32BIT Cortex M3 Performance LINE STM32F103ZET6 STMicroelectronics 1: £12.89 17In Stock 4,680On Order	Mfr. Part No. STM32F103ZET6 Mouser Part No 511-STM32F103ZET6	STMicroelectronics	ARM Microcontrollers - MCU 32BIT Cortex M3 Performance LINE Learn More about STMicroelectronics stm32f1	Datasheet	17In Stock 4,680On Order	£12.89 £10.18 £8.68 £8.18 View £8.02 £7.70	Min.: 1 Mult.: 1	SMD/SMT	LQFP-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
ARM Microcontrollers - MCU 32BIT Cortex M3 High-density STM32F103ZET6TR STMicroelectronics 1: £11.53 17In Stock 500Expected 11/10/2027	Mfr. Part No. STM32F103ZET6TR Mouser Part No 511-STM32F103ZET6TR	STMicroelectronics	ARM Microcontrollers - MCU 32BIT Cortex M3 High-density Learn More about STMicroelectronics stm32f1	Datasheet	17In Stock 500Expected 11/10/2027	Cut Tape £11.53 £9.05 £8.25 £7.75 £7.60 Reel £7.21 MouseReel Available	Min.: 1 Mult.: 1 : 500	SMD/SMT	LQFP-144	ARM Cortex M3	32 bit	72 MHz	512 kB	64 kB	12 bit	112 I/O	2 V	3.6 V	+ 85 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU XL-Density Access Line 32-Bit 768 Kb STM32F103ZFT6 STMicroelectronics 1: £11.10 2In Stock	Mfr. Part No. STM32F103ZFT6 Mouser Part No 511-STM32F103ZFT6	STMicroelectronics	ARM Microcontrollers - MCU XL-Density Access Line 32-Bit 768 Kb Learn More about STMicroelectronics stm32f1	Datasheet	2In Stock	£11.10 £8.50 £7.90 £7.54 £7.22	Min.: 1 Mult.: 1	SMD/SMT	LQFP-144	ARM Cortex M3	32 bit	72 MHz	768 kB	96 kB	12 bit	112 I/O	2 V	3.6 V	+ 85 C	Tray
ARM Microcontrollers - MCU XL-Density Access Line 32-Bit 1G Flash STM32F103ZGH6 STMicroelectronics 1: £12.28 14In Stock 2,208Expected 25/10/2027	Mfr. Part No. STM32F103ZGH6 Mouser Part No 511-STM32F103ZGH6	STMicroelectronics	ARM Microcontrollers - MCU XL-Density Access Line 32-Bit 1G Flash Learn More about STMicroelectronics stm32f1	Datasheet	14In Stock 2,208Expected 25/10/2027	£12.28 £10.03 £9.22 £8.70 View £8.61 £8.35 £8.18	Min.: 1 Mult.: 1	SMD/SMT	BGA-144	ARM Cortex M3	32 bit	72 MHz	1 MB	96 kB	12 bit	112 I/O	2 V	3.6 V	+ 85 C	Tray
ARM Microcontrollers - MCU Mainstream Connectivity line, Arm Cortex-M3 64 Kbytes of Flash 72 MHz CPU, CAN, STM32F105R8T6TR STMicroelectronics 1: £6.79 22In Stock 1,000On Order	Mfr. Part No. STM32F105R8T6TR Mouser Part No 511-STM32F105R8T6TR	STMicroelectronics	ARM Microcontrollers - MCU Mainstream Connectivity line, Arm Cortex-M3 64 Kbytes of Flash 72 MHz CPU, CAN, Learn More about STMicroelectronics stm32f1	Datasheet	22In Stock 1,000On Order	Cut Tape £6.79 £6.20 £4.76 £4.43 View Reel £3.47 £4.30 £3.79 £3.47 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	SMD/SMT	LQFP-64	ARM Cortex M3	32 bit	72 MHz	64 kB	96 kB	12 bit	51 I/O	2 V	3.6 V	+ 85 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU 32-Bit ARM Cortex 256kb Connectivity STM32F105RCT6TR STMicroelectronics 1: £7.54 27In Stock	Mfr. Part No. STM32F105RCT6TR Mouser Part No 511-STM32F105RCT6TR	STMicroelectronics	ARM Microcontrollers - MCU 32-Bit ARM Cortex 256kb Connectivity Learn More about STMicroelectronics stm32f1	Datasheet	27In Stock	Cut Tape £7.54 £5.87 £5.19 £4.98 View Reel £4.51 £4.91 £4.63 £4.51 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	SMD/SMT	LQFP-64	ARM Cortex M3	32 bit	72 MHz	256 kB	64 kB	12 bit	51 I/O	2 V	3.6 V	+ 85 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU 32BIT Cortex 64/25 CONNECTIVITY LINE M3 STM32F105V8T6 STMicroelectronics 1: £6.96 7In Stock 540Expected 28/06/2027	Mfr. Part No. STM32F105V8T6 Mouser Part No 511-STM32F105V8T6	STMicroelectronics	ARM Microcontrollers - MCU 32BIT Cortex 64/25 CONNECTIVITY LINE M3 Learn More about STMicroelectronics stm32f105	Datasheet	7In Stock 540Expected 28/06/2027	£6.96 £5.28 £4.81 £4.37 View £4.25 £4.03	Min.: 1 Mult.: 1	SMD/SMT	LQFP-100	ARM Cortex M3	32 bit	72 MHz	64 kB	64 kB	12 bit	80 I/O	2 V	3.6 V	+ 85 C	Tray
ARM Microcontrollers - MCU 32BIT Cortex 64/25 CONNECTIVITY LINE M3 STM32F105VBT6 STMicroelectronics 1: £7.39 83In Stock 540Expected 28/06/2027	Mfr. Part No. STM32F105VBT6 Mouser Part No 511-STM32F105VBT6	STMicroelectronics	ARM Microcontrollers - MCU 32BIT Cortex 64/25 CONNECTIVITY LINE M3 Learn More about STMicroelectronics stm32f105	Datasheet	83In Stock 540Expected 28/06/2027	£7.39 £5.74 £5.34 £4.90 View £4.70 £4.43 £4.33 Quote	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
ARM Microcontrollers - MCU Connective ARM 32Bit 256kB Flash USB OTG STM32F105VCT6TR STMicroelectronics 1: £8.15 24In Stock 1,000Expected 25/01/2027	Mfr. Part No. STM32F105VCT6TR Mouser Part No 511-STM32F105VCT6TR	STMicroelectronics	ARM Microcontrollers - MCU Connective ARM 32Bit 256kB Flash USB OTG Learn More about STMicroelectronics stm32f105	Datasheet	24In Stock 1,000Expected 25/01/2027	Cut Tape £8.15 £6.45 £6.00 £5.50 View Reel £4.71 £5.37 £4.94 £4.71 MouseReel Available	Min.: 1 Mult.: 1 : 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
ARM Microcontrollers - MCU 32-Bit Cortex 64Kb Connectivity Line STM32F105VCT7 STMicroelectronics 1: £8.90 5In Stock 540Expected 25/10/2027	Mfr. Part No. STM32F105VCT7 Mouser Part No 511-STM32F105VCT7	STMicroelectronics	ARM Microcontrollers - MCU 32-Bit Cortex 64Kb Connectivity Line Learn More about STMicroelectronics stm32f105	Datasheet	5In Stock 540Expected 25/10/2027	£8.90 £6.49 £5.83 £5.17 £5.09	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
ARM Microcontrollers - MCU 32BIT CORTEX M3 256K Flash 6KB RAM STM32F107RCT6TR STMicroelectronics 1: £8.82 24In Stock 4,000On Order	Mfr. Part No. STM32F107RCT6TR Mouser Part No 511-STM32F107RCT6TR	STMicroelectronics	ARM Microcontrollers - MCU 32BIT CORTEX M3 256K Flash 6KB RAM Learn More about STMicroelectronics STM32F107	Datasheet	24In Stock 4,000On Order	Cut Tape £8.82 £6.86 £6.35 £5.75 View Reel £5.12 £5.60 £5.26 £5.12 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	SMD/SMT	LQFP-64	ARM Cortex M3	32 bit	72 MHz	256 kB	64 kB	12 bit	51 I/O	2 V	3.6 V	+ 85 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU 32BIT Cortex 64/25 CONNECTIVITY LINE M3 STM32F107VCT6 STMicroelectronics 1: £10.09 11,880On Order	Mfr. Part No. STM32F107VCT6 Mouser Part No 511-STM32F107VCT6	STMicroelectronics	ARM Microcontrollers - MCU 32BIT Cortex 64/25 CONNECTIVITY LINE M3 Learn More about STMicroelectronics STM32F107	Datasheet	11,880On Order On Order Ship Dates Mfr. No: STM32F107VCT6 Stock: 0 On Order: 3,240 Expected 26/07/2027 8,640 Expected 30/08/2027 Factory Lead Time: 52 Weeks	£10.09 £7.90 £6.22 £5.92 £5.91	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
ARM Microcontrollers - MCU High-performance Arm Cortex-M3 MCU 128 Kbytes of Flash , 120 MHz CPU, ART Accel STM32F205RBT6TR STMicroelectronics 1: £8.16 91In Stock 2,000On Order	Mfr. Part No. STM32F205RBT6TR Mouser Part No 511-STM32F205RBT6TR	STMicroelectronics	ARM Microcontrollers - MCU High-performance Arm Cortex-M3 MCU 128 Kbytes of Flash , 120 MHz CPU, ART Accel Learn More about STMicroelectronics stm32f2	Datasheet	91In Stock 2,000On Order	Cut Tape £8.16 £6.36 £5.63 £4.91 Reel £4.91 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	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	+ 85 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU 32-Bit ARM Cortex 128kb Connectivity STM32F205RBT7 STMicroelectronics 1: £9.30 23In Stock 12,480Expected 22/02/2027	Mfr. Part No. STM32F205RBT7 Mouser Part No 511-STM32F205RBT7	STMicroelectronics	ARM Microcontrollers - MCU 32-Bit ARM Cortex 128kb Connectivity Learn More about STMicroelectronics stm32f2	Datasheet	23In Stock 12,480Expected 22/02/2027	£9.30 £7.23 £6.80 £6.08 View £5.94 £5.39 £5.33	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
ARM Microcontrollers - MCU 32BIT ARM Cortex M3 Connectivity 256kB STM32F205RCT6 STMicroelectronics 1: £9.31 101In Stock 960Expected 22/02/2027	Mfr. Part No. STM32F205RCT6 Mouser Part No 511-STM32F205RCT6	STMicroelectronics	ARM Microcontrollers - MCU 32BIT ARM Cortex M3 Connectivity 256kB Learn More about STMicroelectronics stm32f2	Datasheet	101In Stock 960Expected 22/02/2027	£9.31 £7.25 £6.91 £6.01 View £5.66 £5.33	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