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ARM Cortex M3 Core Embedded Processors & Controllers

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Core = ARM Cortex M3

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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.	Product Type	Mounting Style	Package/Case	Core	Data Bus Width	Maximum Clock Frequency	Program Memory Size	Data RAM Size	ADC Resolution	Number of I/Os	Minimum Operating Temperature	Maximum Operating Temperature	Packaging
ARM Microcontrollers - MCU ARM Cortex M3 32kB 24 MHz 12 Timers STM32F100R6T6BTR STMicroelectronics 1: £4.36 934In Stock	Mfr. Part No. STM32F100R6T6BTR Mouser Part No 511-STM32F100R6T6BTR	STMicroelectronics	ARM Microcontrollers - MCU ARM Cortex M3 32kB 24 MHz 12 Timers Learn More about STMicroelectronics stm32f1	Datasheet	934In Stock	Cut Tape £4.36 £3.32 £2.91 £2.78 Reel £2.43 View £2.56 £2.38 Quote MouseReel Available	Min.: 1 Mult.: 1 : 1,000	ARM Microcontrollers - MCU	SMD/SMT		ARM Cortex M3	32 bit	24 MHz	128 kB	4 kB	12 bit	51 I/O	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU Low Medium Value Line Advanced ARM STM32F100R8T6B STMicroelectronics 1: £4.63 788In Stock 960On Order	Mfr. Part No. STM32F100R8T6B Mouser Part No 511-STM32F100R8T6B	STMicroelectronics	ARM Microcontrollers - MCU Low Medium Value Line Advanced ARM Learn More about STMicroelectronics stm32f1	Datasheet	788In Stock 960On Order	£4.63 £3.54 £3.09 £2.88 View £2.71 £2.70 Quote	Min.: 1 Mult.: 1	ARM Microcontrollers - MCU	SMD/SMT		ARM Cortex M3	32 bit	24 MHz	128 kB	8 kB	12 bit	51 I/O	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU ARM 32Bit Value Line 64-Pin 32kB Flash STM32F100RBT6BTR STMicroelectronics 1: £5.27 855In Stock	Mfr. Part No. STM32F100RBT6BTR Mouser Part No 511-STM32F100RBT6BTR	STMicroelectronics	ARM Microcontrollers - MCU ARM 32Bit Value Line 64-Pin 32kB Flash Learn More about STMicroelectronics stm32f1	Datasheet	855In Stock	Cut Tape £5.27 £4.05 £3.55 £3.42 Reel £3.06 View £3.30 £3.14 £2.98 Quote MouseReel Available	Min.: 1 Mult.: 1 : 1,000	ARM Microcontrollers - MCU	SMD/SMT		ARM Cortex M3	32 bit	24 MHz	128 kB	8 kB	12 bit	51 I/O	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU 32BIT CORTEX M3 Value Line 64KB STM32F100V8T6B STMicroelectronics 1: £5.17 583In Stock 540Expected 05/11/2026	Mfr. Part No. STM32F100V8T6B Mouser Part No 511-STM32F100V8T6B	STMicroelectronics	ARM Microcontrollers - MCU 32BIT CORTEX M3 Value Line 64KB Learn More about STMicroelectronics stm32f1	Datasheet	583In Stock 540Expected 05/11/2026	£5.17 £3.78 £3.51 £3.27 £3.05	Min.: 1 Mult.: 1	ARM Microcontrollers - MCU	SMD/SMT		ARM Cortex M3	32 bit	24 MHz	64 kB	8 kB	12 bit	80 I/O	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU 32BIT Cortex M3 L/D Access Line STM32F101C6T6ATR STMicroelectronics 1: £5.04 641In Stock	Mfr. Part No. STM32F101C6T6ATR Mouser Part No 511-STM32F101C6T6ATR	STMicroelectronics	ARM Microcontrollers - MCU 32BIT Cortex M3 L/D Access Line Learn More about STMicroelectronics stm32f1	Datasheet	641In Stock	Cut Tape £5.04 £3.70 £3.45 £3.03 View Reel £2.27 £2.87 £2.59 £2.31 £2.27 Quote MouseReel Available	Min.: 1 Mult.: 1 : 2,400	ARM Microcontrollers - MCU	SMD/SMT	LQFP-48	ARM Cortex M3	32 bit	36 MHz	32 kB	6 kB	12 bit	37 I/O	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU 32BIT Cortex M3 128K 16KB RAM 1X12 ADC STM32F101CBT6 STMicroelectronics 1: £6.20 982In Stock 4,500On Order	Mfr. Part No. STM32F101CBT6 Mouser Part No 511-STM32F101CBT6	STMicroelectronics	ARM Microcontrollers - MCU 32BIT Cortex M3 128K 16KB RAM 1X12 ADC Learn More about STMicroelectronics stm32f1	Datasheet	982In Stock 4,500On Order On Order Ship Dates Mfr. No: STM32F101CBT6 Stock: 982 Can Dispatch Immediately On Order: 1,500 Expected 23/08/2027 3,000 Expected 11/10/2027 Factory Lead Time: 40 Weeks	£6.20 £4.32 £4.13 £3.60 View £3.43 £3.33 £3.12 Quote	Min.: 1 Mult.: 1	ARM Microcontrollers - MCU	SMD/SMT	LQFP-48	ARM Cortex M3	32 bit	36 MHz	128 kB	16 kB	12 bit	37 I/O	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU 32BIT Cortex M3 ACCESS LINE STM32F101VET6 STMicroelectronics 1: £9.21 229In Stock	Mfr. Part No. STM32F101VET6 Mouser Part No 511-STM32F101VET6	STMicroelectronics	ARM Microcontrollers - MCU 32BIT Cortex M3 ACCESS LINE Learn More about STMicroelectronics stm32f1	Datasheet	229In Stock	£9.21 £7.48 £7.13 £6.20 View £5.58 £5.55 £5.43	Min.: 1 Mult.: 1	ARM Microcontrollers - MCU	SMD/SMT	LQFP-100	ARM Cortex M3	32 bit	36 MHz	512 kB	48 kB	12 bit	80 I/O	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU 32BIT Cortex M3 L/D USB MCU STM32F102C8T6 STMicroelectronics 1: £5.07 1,353In Stock	Mfr. Part No. STM32F102C8T6 Mouser Part No 511-STM32F102C8T6	STMicroelectronics	ARM Microcontrollers - MCU 32BIT Cortex M3 L/D USB MCU Learn More about STMicroelectronics stm32f1	Datasheet	1,353In Stock	£5.07 £3.88 £3.40 £3.27 View £3.11 £3.01 £2.98 £2.82 Quote	Min.: 1 Mult.: 1	ARM Microcontrollers - MCU	SMD/SMT	LQFP-48	ARM Cortex M3	32 bit	48 MHz	64 kB	10 kB	12 bit	37 I/O	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU 32BIT Cortex M3 M/D ACCESS USB MCU STM32F102R8T6 STMicroelectronics 1: £6.12 540In Stock	Mfr. Part No. STM32F102R8T6 Mouser Part No 511-STM32F102R8T6	STMicroelectronics	ARM Microcontrollers - MCU 32BIT Cortex M3 M/D ACCESS USB MCU Learn More about STMicroelectronics stm32f1	Datasheet	540In Stock	£6.12 £4.28 £4.08 £3.54 View £3.47 £3.26 £3.14 £3.06 Quote	Min.: 1 Mult.: 1	ARM Microcontrollers - MCU	SMD/SMT	LQFP-64	ARM Cortex M3	32 bit	48 MHz	64 kB	10 kB	12 bit	51 I/O	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU 32BIT Cortex M3 M/D ACCESS USB MCU STM32F102RBT6 STMicroelectronics 1: £6.09 914In Stock	Mfr. Part No. STM32F102RBT6 Mouser Part No 511-STM32F102RBT6	STMicroelectronics	ARM Microcontrollers - MCU 32BIT Cortex M3 M/D ACCESS USB MCU Learn More about STMicroelectronics stm32f1	Datasheet	914In Stock	£6.09 £4.70 £4.15 £3.79 £3.57	Min.: 1 Mult.: 1	ARM Microcontrollers - MCU	SMD/SMT	LQFP-64	ARM Cortex M3	32 bit	48 MHz	128 kB	16 kB	12 bit	51 I/O	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU 32BIT Cortex M3 M/D 32 to 128 USB/CAN STM32F103C6T6ATR STMicroelectronics 1: £4.68 1,992In Stock	Mfr. Part No. STM32F103C6T6ATR Mouser Part No 511-STM32F103C6T6ATR	STMicroelectronics	ARM Microcontrollers - MCU 32BIT Cortex M3 M/D 32 to 128 USB/CAN Learn More about STMicroelectronics stm32f1	Datasheet	1,992In Stock	Cut Tape £4.68 £3.55 £3.30 £3.00 View Reel £2.63 £2.94 £2.69 £2.64 £2.63 Quote MouseReel Available	Min.: 1 Mult.: 1 : 2,400	ARM Microcontrollers - MCU	SMD/SMT	LQFP-48	ARM Cortex M3	32 bit	72 MHz	32 kB	10 kB	12 bit	37 I/O	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU 32BIT Cortex M3 M/D Performance LINE STM32F103R8T6TR STMicroelectronics 1: £4.91 1,416In Stock	Mfr. Part No. STM32F103R8T6TR Mouser Part No 511-STM32F103R8T6TR	STMicroelectronics	ARM Microcontrollers - MCU 32BIT Cortex M3 M/D Performance LINE Learn More about STMicroelectronics stm32f1	Datasheet	1,416In Stock	Cut Tape £4.91 £4.03 £3.67 £3.54 View Reel £3.06 £3.48 £3.32 £3.06 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	ARM Microcontrollers - MCU	SMD/SMT	LQFP-64	ARM Cortex M3	32 bit	72 MHz	64 kB	20 kB	12 bit	51 I/O	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU 32BIT Cortex M3 M/D Performance LINE STM32F103RBT7 STMicroelectronics 1: £7.21 1,030In Stock	Mfr. Part No. STM32F103RBT7 Mouser Part No 511-STM32F103RBT7	STMicroelectronics	ARM Microcontrollers - MCU 32BIT Cortex M3 M/D Performance LINE Learn More about STMicroelectronics stm32f1	Datasheet	1,030In Stock	£7.21 £5.58 £5.13 £4.58 View £4.32 Quote	Min.: 1 Mult.: 1	ARM Microcontrollers - MCU	SMD/SMT	LQFP-64	ARM Cortex M3	32 bit	72 MHz	128 kB	20 kB	12 bit	51 I/O	- 40 C	+ 105 C	Tray
ARM Microcontrollers - MCU 32BIT Cortex M3 L/D PERF LN 64 PIN IND STM32F103RBT7TR STMicroelectronics 1: £7.42 288In Stock	Mfr. Part No. STM32F103RBT7TR Mouser Part No 511-STM32F103RBT7TR	STMicroelectronics	ARM Microcontrollers - MCU 32BIT Cortex M3 L/D PERF LN 64 PIN IND Learn More about STMicroelectronics stm32f1	Datasheet	288In Stock	Cut Tape £7.42 £5.74 £5.09 £4.80 Reel £3.99 View £4.69 £4.34 £3.86 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	ARM Microcontrollers - MCU	SMD/SMT	LQFP-64	ARM Cortex M3	32 bit	72 MHz	128 kB	20 kB	12 bit	51 I/O	- 40 C	+ 105 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU 32BIT Cortex M3 Performance LINE STM32F103RET6 STMicroelectronics 1: £9.24 609In Stock 4,800On Order	Mfr. Part No. STM32F103RET6 Mouser Part No 511-STM32F103RET6	STMicroelectronics	ARM Microcontrollers - MCU 32BIT Cortex M3 Performance LINE Learn More about STMicroelectronics stm32f1	Datasheet	609In Stock 4,800On Order	£9.24 £7.24 £6.43 £6.03 £5.94	Min.: 1 Mult.: 1 Max.: 250	ARM Microcontrollers - MCU	SMD/SMT	LQFP-64	ARM Cortex M3	32 bit	72 MHz	512 kB	64 kB	12 bit	51 I/O	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU 32BIT Cortex M3 H/D Performance LINE STM32F103RET7 STMicroelectronics 1: £9.36 559In Stock	Mfr. Part No. STM32F103RET7 Mouser Part No 511-STM32F103RET7	STMicroelectronics	ARM Microcontrollers - MCU 32BIT Cortex M3 H/D Performance LINE Learn More about STMicroelectronics stm32f1	Datasheet	559In Stock	£9.36 £7.61 £7.09 £6.44 View £6.30 £6.20 £6.12	Min.: 1 Mult.: 1	ARM Microcontrollers - MCU	SMD/SMT	LQFP-64	ARM Cortex M3	32 bit	72 MHz	512 kB	64 kB	12 bit	51 I/O	- 40 C	+ 105 C	Tray
ARM Microcontrollers - MCU 32BIT Cortex M3 FL PERFORMANCE LINE STM32F103T8U6 STMicroelectronics 1: £6.23 480In Stock 2,940Expected 24/05/2027	Mfr. Part No. STM32F103T8U6 Mouser Part No 511-STM32F103T8U6	STMicroelectronics	ARM Microcontrollers - MCU 32BIT Cortex M3 FL PERFORMANCE LINE Learn More about STMicroelectronics stm32f1	Datasheet	480In Stock 2,940Expected 24/05/2027	£6.23 £4.36 £4.16 £3.75 View £3.58 £3.47 £3.45 £3.30	Min.: 1 Mult.: 1	ARM Microcontrollers - MCU	SMD/SMT	UFQFPN-36	ARM Cortex M3	32 bit	72 MHz	64 kB	20 kB	12 bit	26 I/O	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU 32BIT Cortex M3 M/D Performance LINE STM32F103VBT7 STMicroelectronics 1: £7.80 919In Stock	Mfr. Part No. STM32F103VBT7 Mouser Part No 511-STM32F103VBT7	STMicroelectronics	ARM Microcontrollers - MCU 32BIT Cortex M3 M/D Performance LINE Learn More about STMicroelectronics stm32f1	Datasheet	919In Stock	£7.80 £5.66 £5.19 £5.12 View £4.82 £4.53 £4.52	Min.: 1 Mult.: 1	ARM Microcontrollers - MCU	SMD/SMT	LQFP-100	ARM Cortex M3	32 bit	72 MHz	128 kB	20 kB	12 bit	80 I/O	- 40 C	+ 105 C	Tray
ARM Microcontrollers - MCU 32BIT Cortex M3 H/D 260 to 512 USB/CAN STM32F103VDT6 STMicroelectronics 1: £8.01 997In Stock	Mfr. Part No. STM32F103VDT6 Mouser Part No 511-STM32F103VDT6	STMicroelectronics	ARM Microcontrollers - MCU 32BIT Cortex M3 H/D 260 to 512 USB/CAN Learn More about STMicroelectronics stm32f1	Datasheet	997In Stock	£8.01 £6.50 £6.00 £5.58 View £5.33 £5.11 Quote	Min.: 1 Mult.: 1	ARM Microcontrollers - MCU	SMD/SMT	LQFP-100	ARM Cortex M3	32 bit	72 MHz	384 kB	64 kB	12 bit	80 I/O	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU STM32F103 Perf Line M3 384kB 72 MHz MCU STM32F103VDT6TR STMicroelectronics 1: £8.90 566In Stock	Mfr. Part No. STM32F103VDT6TR Mouser Part No 511-STM32F103VDT6TR	STMicroelectronics	ARM Microcontrollers - MCU STM32F103 Perf Line M3 384kB 72 MHz MCU Learn More about STMicroelectronics stm32f1	Datasheet	566In Stock	Cut Tape £8.90 £6.96 £6.18 £5.93 £5.64 Reel £5.20 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	ARM Microcontrollers - MCU	SMD/SMT	LQFP-100	ARM Cortex M3	32 bit	72 MHz	384 kB	64 kB	12 bit		- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU 32BIT Cortex M3 H/D Performance LINE STM32F103VET7 STMicroelectronics 1: £10.00 1,648In Stock	Mfr. Part No. STM32F103VET7 Mouser Part No 511-STM32F103VET7	STMicroelectronics	ARM Microcontrollers - MCU 32BIT Cortex M3 H/D Performance LINE Learn More about STMicroelectronics stm32f1	Datasheet	1,648In Stock	£10.00 £7.70 £7.10 £6.87 View £6.51 £6.42 £6.41 Quote	Min.: 1 Mult.: 1	ARM Microcontrollers - MCU	SMD/SMT	LQFP-100	ARM Cortex M3	32 bit	72 MHz	512 kB	64 kB	12 bit	80 I/O	- 40 C	+ 105 C	Tray
ARM Microcontrollers - MCU 32-Bit ARM Cortex XL Density 1Mb Flash STM32F103VGT7 STMicroelectronics 1: £12.69 262In Stock	Mfr. Part No. STM32F103VGT7 Mouser Part No 511-STM32F103VGT7	STMicroelectronics	ARM Microcontrollers - MCU 32-Bit ARM Cortex XL Density 1Mb Flash Learn More about STMicroelectronics stm32f1	Datasheet	262In Stock	£12.69 £10.00 £8.85 £8.45 View £8.28 £7.94 £7.93 Quote	Min.: 1 Mult.: 1	ARM Microcontrollers - MCU	SMD/SMT	LQFP-100	ARM Cortex M3	32 bit	72 MHz	1 MB	96 kB	12 bit	112 I/O	- 40 C	+ 105 C	Tray
ARM Microcontrollers - MCU ARM 32Bit Access MCU 144-Pin 256kB Flash STM32F103ZCT7 STMicroelectronics 1: £10.38 386In Stock	Mfr. Part No. STM32F103ZCT7 Mouser Part No 511-STM32F103ZCT7	STMicroelectronics	ARM Microcontrollers - MCU ARM 32Bit Access MCU 144-Pin 256kB Flash Learn More about STMicroelectronics stm32f1	Datasheet	386In Stock	£10.38 £8.15 £7.25 £6.82 £6.77	Min.: 1 Mult.: 1	ARM Microcontrollers - MCU	SMD/SMT	LQFP-144	ARM Cortex M3	32 bit	72 MHz	256 kB	64 kB	12 bit	112 I/O	- 40 C	+ 105 C	Tray
ARM Microcontrollers - MCU 32BIT Cortex M3 STM32F103 Eval BRD STM32F103ZEH6 STMicroelectronics 1: £10.83 1,566In Stock	Mfr. Part No. STM32F103ZEH6 Mouser Part No 511-STM32F103ZEH6	STMicroelectronics	ARM Microcontrollers - MCU 32BIT Cortex M3 STM32F103 Eval BRD Learn More about STMicroelectronics stm32f1	Datasheet	1,566In Stock	£10.83 £8.68 £8.04 £7.32 View £7.10 £6.98 Quote	Min.: 1 Mult.: 1	ARM Microcontrollers - MCU	SMD/SMT	BGA-144	ARM Cortex M3	32 bit	72 MHz	512 kB	64 kB	12 bit	112 I/O	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU 32BIT Cortex 64/25 CONNECTIVITY LINE M3 STM32F105RBT6 STMicroelectronics 1: £7.20 1,330In Stock	Mfr. Part No. STM32F105RBT6 Mouser Part No 511-STM32F105RBT6	STMicroelectronics	ARM Microcontrollers - MCU 32BIT Cortex 64/25 CONNECTIVITY LINE M3 Learn More about STMicroelectronics stm32f105	Datasheet	1,330In Stock	£7.20 £5.40 £5.14 £4.47 View £4.26 £4.05 £3.95 Quote	Min.: 1 Mult.: 1	ARM Microcontrollers - MCU	SMD/SMT	LQFP-64	ARM Cortex M3	32 bit	72 MHz	128 kB	64 kB	12 bit	51 I/O	- 40 C	+ 85 C	Tray