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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 32-Bit Cortex 64Kb Access Line MCU STM32F101C8U6 STMicroelectronics 1: £4.70 1,019In Stock	Mfr. Part No. STM32F101C8U6 Mouser Part No 511-STM32F101C8U6	STMicroelectronics	ARM Microcontrollers - MCU 32-Bit Cortex 64Kb Access Line MCU Learn More about STMicroelectronics stm32f1	Datasheet	1,019In Stock	£4.70 £3.60 £3.15 £3.01 View £2.86 £2.78 £2.72 £2.62 Quote	Min.: 1 Mult.: 1	ARM Microcontrollers - MCU	SMD/SMT	UFQFPN-48	ARM Cortex M3	32 bit	36 MHz	64 kB	10 kB	12 bit	37 I/O	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU Mainstream Connectivity line, Arm Cortex-M3 MCU 256 Kbytes of Flash 72 MHz CPU, STM32F105VCT6V STMicroelectronics 1: £12.56 515In Stock NRND	Mfr. Part No. STM32F105VCT6V Mouser Part No 511-STM32F105VCT6V NRND	STMicroelectronics	ARM Microcontrollers - MCU Mainstream Connectivity line, Arm Cortex-M3 MCU 256 Kbytes of Flash 72 MHz CPU, Learn More about STMicroelectronics stm32f105	Datasheet	515In Stock	£12.56 £9.84 £9.11 £8.42 View £8.13 £7.93 £7.44 Quote	Min.: 1 Mult.: 1	ARM Microcontrollers - MCU	SMD/SMT	LQFP-100	ARM Cortex M3	32 bit	72 MHz	256 kB	64 kB	12 bit	80 I/O	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU ARM 32Bit Value Line 48-Pin 64kB Flash STM32F100C8T6BTR STMicroelectronics 1: £4.43 12,000Expected 13/09/2027	Mfr. Part No. STM32F100C8T6BTR Mouser Part No 511-STM32F100C8T6BTR	STMicroelectronics	ARM Microcontrollers - MCU ARM 32Bit Value Line 48-Pin 64kB Flash Learn More about STMicroelectronics stm32f1	Datasheet	12,000Expected 13/09/2027	Cut Tape £4.43 £3.13 £2.93 £2.60 View Reel £2.24 £2.58 £2.37 £2.24 £2.24 MouseReel Available	Min.: 1 Mult.: 1 : 2,400	ARM Microcontrollers - MCU	SMD/SMT	LQFP-48	ARM Cortex M3	32 bit	24 MHz	64 kB	8 kB	12 bit	37 I/O	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU Mainstream Performance line, Arm Cortex-M3 MCU 128 Kbytes of Flash 72 MHz CPU, m STM32F103CBU6TR STMicroelectronics 1: £6.43 4,991Expected 02/11/2026	Mfr. Part No. STM32F103CBU6TR Mouser Part No 511-STM32F103CBU6TR	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	4,991Expected 02/11/2026	Cut Tape £6.43 £4.91 £4.37 £4.10 View Reel £3.47 £4.00 £3.66 £3.62 £3.47 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	ARM Microcontrollers - MCU	SMD/SMT	UFQFPN-48	ARM Cortex M3	32 bit	72 MHz	128 kB	20 kB	12 bit	37 I/O	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU 32BIT Cortex M3 64KB 20KB RAM 2X12 ADC STM32F103R8T6 STMicroelectronics 1: £5.87 3,840On Order	Mfr. Part No. STM32F103R8T6 Mouser Part No 511-STM32F103R8T6	STMicroelectronics	ARM Microcontrollers - MCU 32BIT Cortex M3 64KB 20KB RAM 2X12 ADC Learn More about STMicroelectronics stm32f1	Datasheet	3,840On Order On Order Ship Dates Mfr. No: STM32F103R8T6 Stock: 0 On Order: 1,920 Expected 22/12/2026 1,920 Expected 23/02/2027 Factory Lead Time: 52 Weeks	£5.87 £4.52 £3.98 £3.72 £3.49	Min.: 1 Mult.: 1	ARM Microcontrollers - MCU	SMD/SMT	LQFP-64	ARM Cortex M3	32 bit	72 MHz	64 kB	20 kB	12 bit	64 I/O	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU Perform ARM 32Bit 32kB Flash 64-Pin STM32F103RFT6TR STMicroelectronics 1: £10.70 2,000Expected 12/07/2027	Mfr. Part No. STM32F103RFT6TR Mouser Part No 511-STM32F103RFT6TR	STMicroelectronics	ARM Microcontrollers - MCU Perform ARM 32Bit 32kB Flash 64-Pin Learn More about STMicroelectronics stm32f1	Datasheet	2,000Expected 12/07/2027	Cut Tape £10.70 £8.40 £7.64 £7.18 View Reel £6.51 £7.05 £6.63 £6.51 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	ARM Microcontrollers - MCU	SMD/SMT	LQFP-64	ARM Cortex M3	32 bit	72 MHz	768 kB	96 kB	12 bit		- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU 32-Bit ARM Cortex MED Density 128kb PL STM32F103TBU7 STMicroelectronics 1: £6.92 8,655Expected 31/05/2027	Mfr. Part No. STM32F103TBU7 Mouser Part No 511-STM32F103TBU7	STMicroelectronics	ARM Microcontrollers - MCU 32-Bit ARM Cortex MED Density 128kb PL Learn More about STMicroelectronics stm32f1	Datasheet	8,655Expected 31/05/2027	£6.92 £5.26 £4.85 £4.39 View £4.15 £3.98 £3.93	Min.: 1 Mult.: 1	ARM Microcontrollers - MCU	SMD/SMT	VFQFPN-36	ARM Cortex M3	32 bit	72 MHz	128 kB	20 kB	12 bit	26 I/O	- 40 C	+ 105 C	Tray
ARM Microcontrollers - MCU 32BIT Cortex M3 384Kb Flash MCU STM32F103ZDH6 STMicroelectronics 1: £10.48 2,208Expected 04/12/2026	Mfr. Part No. STM32F103ZDH6 Mouser Part No 511-STM32F103ZDH6	STMicroelectronics	ARM Microcontrollers - MCU 32BIT Cortex M3 384Kb Flash MCU Learn More about STMicroelectronics stm32f1	Datasheet	2,208Expected 04/12/2026	£10.48 £8.21 £7.66 £7.11 £6.90	Min.: 1 Mult.: 1	ARM Microcontrollers - MCU	SMD/SMT	BGA-144	ARM Cortex M3	32 bit	72 MHz	384 kB	64 kB	12 bit	112 I/O	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU 32BIT Cortex 64/25 CONNECTIVITY LINE M3 STM32F105R8T6 STMicroelectronics 1: £6.79 9,486On Order	Mfr. Part No. STM32F105R8T6 Mouser Part No 511-STM32F105R8T6	STMicroelectronics	ARM Microcontrollers - MCU 32BIT Cortex 64/25 CONNECTIVITY LINE M3 Learn More about STMicroelectronics stm32f105	Datasheet	9,486On Order On Order Ship Dates Mfr. No: STM32F105R8T6 Stock: 0 On Order: 2,766 Expected 30/08/2027 6,720 TBD Factory Lead Time: 52 Weeks	£6.79 £4.57 £4.02 £3.75 £3.54	Min.: 1 Mult.: 1	ARM Microcontrollers - MCU	SMD/SMT	LQFP-64	ARM Cortex M3	32 bit	72 MHz	64 kB	64 kB	12 bit	51 I/O	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU 32BIT Cortex 64/25 CONNECTIVITY LINE M3 STM32F107RBT6 STMicroelectronics 1: £7.96 3,689On Order	Mfr. Part No. STM32F107RBT6 Mouser Part No 511-STM32F107RBT6	STMicroelectronics	ARM Microcontrollers - MCU 32BIT Cortex 64/25 CONNECTIVITY LINE M3 Learn More about STMicroelectronics STM32F107	Datasheet	3,689On Order On Order Ship Dates Mfr. No: STM32F107RBT6 Stock: 0 On Order: 809 Expected 07/04/2027 960 Expected 30/08/2027 1,920 TBD Factory Lead Time: 52 Weeks	£7.96 £6.18 £5.70 £5.12 £4.84	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
ARM Microcontrollers - MCU Ultra-low-power 32-bit Value Line Arm Cortex-M3 MCU 64 Kbytes of Flash 32 MHz CP STM32L100R8T6A STMicroelectronics 1: £5.40 4,800Expected 22/02/2027	Mfr. Part No. STM32L100R8T6A Mouser Part No 511-STM32L100R8T6A	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power 32-bit Value Line Arm Cortex-M3 MCU 64 Kbytes of Flash 32 MHz CP Learn More about STMicroelectronics stm32l1	Datasheet	4,800Expected 22/02/2027	£5.40 £4.03 £3.67 £3.30 View £3.20 £2.88	Min.: 1 Mult.: 1	ARM Microcontrollers - MCU	SMD/SMT	LQFP-64	ARM Cortex M3	32 bit	32 MHz	64 kB	8 kB	12 bit	51 I/O	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M3 MCU 128 Kbytes of Flash , 32 MHz CPU, USB STM32L151CBT6ATR STMicroelectronics 1: £5.61 4,800Expected 22/02/2027	Mfr. Part No. STM32L151CBT6ATR Mouser Part No 511-STM32L151CBT6ATR	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M3 MCU 128 Kbytes of Flash , 32 MHz CPU, USB Learn More about STMicroelectronics stm32l1	Datasheet	4,800Expected 22/02/2027	Cut Tape £5.61 £4.25 £3.79 £3.54 View Reel £3.00 £3.46 £3.16 £3.00 £3.00 MouseReel Available	Min.: 1 Mult.: 1 : 2,400	ARM Microcontrollers - MCU	SMD/SMT	LQFP-48	ARM Cortex M3	32 bit	32 MHz	128 kB	16 kB	12 bit	37 I/O	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M3 MCU 256 Kbytes of Flash 32 MHz CPU, USB, 2xOp-amp STM32L151CCU6TR STMicroelectronics 1: £6.26 8,833On Order	Mfr. Part No. STM32L151CCU6TR Mouser Part No 511-STM32L151CCU6TR	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M3 MCU 256 Kbytes of Flash 32 MHz CPU, USB, 2xOp-amp Learn More about STMicroelectronics stm32l1	Datasheet	8,833On Order	Cut Tape £6.26 £4.84 £4.26 £4.09 View Reel £3.57 £4.03 £3.78 £3.73 £3.57 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	ARM Microcontrollers - MCU	SMD/SMT	UFQPFN-48	ARM Cortex M3	32 bit	32 MHz	256 kB	32 kB	12 bit	37 I/O	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M3 MCU 512 Kbytes of Flash 32 MHz CPU, USB, 2xOp-amp STM32L151QEH6 STMicroelectronics 1: £11.25 9,984On Order	Mfr. Part No. STM32L151QEH6 Mouser Part No 511-STM32L151QEH6	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M3 MCU 512 Kbytes of Flash 32 MHz CPU, USB, 2xOp-amp Learn More about STMicroelectronics stm32l1	Datasheet	9,984On Order	£11.25 £8.83 £8.05 £7.57 View £7.21 £7.00 £6.92	Min.: 1 Mult.: 1	ARM Microcontrollers - MCU	SMD/SMT	BGA-132	ARM Cortex M3	32 bit	32 MHz	512 kB	80 kB	12 bit	109 I/O	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M3 MCU 512 Kbytes of Flash 32 MHz CPU, MCD, USB, 2xOp STM32L151VET6 STMicroelectronics 1: £9.53 2,921On Order	Mfr. Part No. STM32L151VET6 Mouser Part No 511-STM32L151VET6	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M3 MCU 512 Kbytes of Flash 32 MHz CPU, MCD, USB, 2xOp Learn More about STMicroelectronics stm32l1	Datasheet	2,921On Order	£9.53 £6.97 £6.41 £5.97	Min.: 1 Mult.: 1	ARM Microcontrollers - MCU	SMD/SMT	LQFP-100	ARM Cortex M3	32 bit	32 MHz	512 kB	80 kB	12 bit	83 I/O	- 40 C	+ 85 C	Tray
RF Microcontrollers - MCU SimpleLink 32-bit A rm Cortex-M3 Sub-1 G A 595-CC1310F128RGZT CC1310F128RGZR Texas Instruments 1: £5.31 5,000Expected 12/04/2027	Mfr. Part No. CC1310F128RGZR Mouser Part No 595-CC1310F128RGZR	Texas Instruments	RF Microcontrollers - MCU SimpleLink 32-bit A rm Cortex-M3 Sub-1 G A 595-CC1310F128RGZT Learn More about Texas Instruments ti cc1310 simplelink mcu	Datasheet	5,000Expected 12/04/2027	Cut Tape £5.31 £4.59 £4.36 £4.02 View Reel £3.37 £3.82 £3.68 £3.54 £3.37 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	RF Microcontrollers - MCU	SMD/SMT	VQFN-48	ARM Cortex M3	32 bit	48 MHz	128 kB	20 kB	12 bit	30 I/O	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU 256K Flash 64K SRAM PSoC 5LP CY8C5868LTI-LP039 Infineon Technologies 1: £22.07 980On Order	Mfr. Part No. CY8C5868LTI-LP039 Mouser Part No 727-CY8C5868LTILP039	Infineon Technologies	ARM Microcontrollers - MCU 256K Flash 64K SRAM PSoC 5LP Learn More about Infineon Technologies cypress psoc5lp	Datasheet	980On Order On Order Ship Dates Mfr. No: CY8C5868LTI-LP039 Stock: 0 On Order: 460 Expected 05/11/2026 520 Expected 19/11/2026 Factory Lead Time: 18 Weeks	£22.07 £17.78 £16.06 £15.47 View £14.95 £14.42 Quote	Min.: 1 Mult.: 1	ARM Microcontrollers - MCU	SMD/SMT	QFN-68	ARM Cortex M3	32 bit	67 MHz	256 kB	64 kB	12 bit	48 I/O	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU MM-LEGACY PSOC135 CY8C5888FNI-LP210T Infineon Technologies 1: £25.87 1,995On Order	Mfr. Part No. CY8C5888FNI-LP210T Mouser Part No 727-CY8C5888FNIP210T	Infineon Technologies	ARM Microcontrollers - MCU MM-LEGACY PSOC135 Learn More about Infineon Technologies cypress psoc 5lp socs	Datasheet	1,995On Order	Cut Tape £25.87 £20.24 £19.33 £17.56 View Reel £16.56 £16.96 £16.59 £16.57 £16.56	Min.: 1 Mult.: 1 : 2,000	ARM Microcontrollers - MCU	SMD/SMT	WLCSP-99	ARM Cortex M3	32 bit	80 MHz	256 kB	64 kB	12 bit	62 I/O	- 40 C	+ 85 C	Reel, Cut Tape
ARM Microcontrollers - MCU Scalable Mainstream 32-bit Microcontroller (MCU) based on ARM Cortex-M3 Core LPC1754FBD80,518 NXP Semiconductors 1: £9.56 1,960Expected 21/12/2026	Mfr. Part No. LPC1754FBD80,518 Mouser Part No 771-LPC1754FBD80518	NXP Semiconductors	ARM Microcontrollers - MCU Scalable Mainstream 32-bit Microcontroller (MCU) based on ARM Cortex-M3 Core	Datasheet	1,960Expected 21/12/2026	Cut Tape £9.56 £7.53 £7.05 £6.50 View Reel £5.71 £6.24 £6.03 £5.71 Quote MouseReel Available	Min.: 1 Mult.: 1 : 1,000	ARM Microcontrollers - MCU	SMD/SMT	LQFP-80	ARM Cortex M3	32 bit	100 MHz	128 kB	32 kB	12 bit	52 I/O	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU Scalable Mainstream 32-bit Microcontroller (MCU) based on ARM Cortex-M3 Core LPC1778FET208K NXP Semiconductors 1: £17.08 1,260Expected 04/01/2027	Mfr. Part No. LPC1778FET208K Mouser Part No 771-LPC1778FET208K	NXP Semiconductors	ARM Microcontrollers - MCU Scalable Mainstream 32-bit Microcontroller (MCU) based on ARM Cortex-M3 Core Learn More about NXP Semiconductors nxplpc1778lpc1788	Datasheet	1,260Expected 04/01/2027	£17.08 £13.80 £13.23 £11.66 View £11.09 £10.58 £10.17	Min.: 1 Mult.: 1	ARM Microcontrollers - MCU	SMD/SMT		ARM Cortex M3	32 bit	120 MHz	512 kB	96 kB	12 bit	165 I/O	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU High Performance 32-bit Microcontroller (MCU) based on ARM Cortex-M3 Core LPC1837JET100E NXP Semiconductors 1: £17.51 3,331On Order	Mfr. Part No. LPC1837JET100E Mouser Part No 771-LPC1837JET100E	NXP Semiconductors	ARM Microcontrollers - MCU High Performance 32-bit Microcontroller (MCU) based on ARM Cortex-M3 Core Learn More about NXP Semiconductors nxp lpc1830 lpc1850 lpc1857 mcus	Datasheet	3,331On Order On Order Ship Dates Mfr. No: LPC1837JET100E Stock: 0 On Order: 471 Expected 14/12/2026 1,820 Expected 29/12/2026 1,040 Expected 18/01/2027 Factory Lead Time: 39 Weeks	£17.51 £13.66 £12.64 £11.92	Min.: 1 Mult.: 1	ARM Microcontrollers - MCU	SMD/SMT	TFBGA-100	ARM Cortex M3	32 bit	180 MHz	1 MB	136 kB	2 x 10 bit	49 I/O	- 40 C	+ 105 C	Tray
ARM Microcontrollers - MCU QFP100,GREEN IND TEMP, MRLA ATSAM3A8CA-AU Microchip Technology 1: £8.39 172Expected 16/11/2026	Mfr. Part No. ATSAM3A8CA-AU Mouser Part No 556-ATSAM3A8CA-AU	Microchip Technology	ARM Microcontrollers - MCU QFP100,GREEN IND TEMP, MRLA Learn More about Microchip Technology microchip sam3a mcu	Datasheet	172Expected 16/11/2026	£8.39 £8.26 £7.64 £7.53 View £6.96 £6.95	Min.: 1 Mult.: 1	ARM Microcontrollers - MCU	SMD/SMT	LQFP-100	ARM Cortex M3	32 bit	84 MHz	512 kB	64 kB	12 bit	63 I/O	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU Tiny Gecko MCU IC EFM32TG110F32-D-QFN24R Silicon Labs 1: £3.80 2,256Expected 20/11/2026	Mfr. Part No. EFM32TG110F32-D-QFN24R Mouser Part No 634-EFM32TG110F32-DR	Silicon Labs	ARM Microcontrollers - MCU Tiny Gecko MCU IC Learn More about Silicon Labs energymicroefm32tg	Datasheet	2,256Expected 20/11/2026	Cut Tape £3.80 £2.89 £2.66 £2.42 View Reel £2.17 £2.30 £2.23 £2.20 £2.17 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	ARM Microcontrollers - MCU	SMD/SMT	QFN-24	ARM Cortex M3	32 bit	32 MHz	32 kB	4 kB	12 bit	17 I/O	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU ARM Cortex-M3 32-bit 40 MHz 256 kB MCU EFM32JG1B200F256GM48-C0 Silicon Labs 1: £4.17 2,597Expected 18/01/2027	Mfr. Part No. EFM32JG1B200F256GM48-C0 Mouser Part No 634-JG1B200F25648C0	Silicon Labs	ARM Microcontrollers - MCU ARM Cortex-M3 32-bit 40 MHz 256 kB MCU Learn More about Silicon Labs silabs efm32 jade gecko mcu	Datasheet	2,597Expected 18/01/2027	£4.17 £3.30 £2.98 £2.76 View £2.61 £2.52 £2.51	Min.: 1 Mult.: 1	ARM Microcontrollers - MCU	SMD/SMT	QFN-48	ARM Cortex M3	32 bit	40 MHz	256 kB	32 kB	12 bit	32 I/O	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU Mainstream Valueline ARM Cortex-M3 MCU STM32F100VBT7B STMicroelectronics 1: £6.10 248In Stock	Mfr. Part No. STM32F100VBT7B Mouser Part No 511-STM32F100VBT7B	STMicroelectronics	ARM Microcontrollers - MCU Mainstream Valueline ARM Cortex-M3 MCU Learn More about STMicroelectronics stm32f1	Datasheet	248In Stock	£6.10 £4.37 £4.00 £3.88 View £3.58 £3.53 £3.48	Min.: 1 Mult.: 1	ARM Microcontrollers - MCU	SMD/SMT		ARM Cortex M3	32 bit	24 MHz	128 kB	8 kB	12 bit	80 I/O	- 40 C	+ 105 C	Tray