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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 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	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
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	SMD/SMT	LQFP-100	ARM Cortex M3	32 bit	32 MHz	512 kB	80 kB	12 bit	83 I/O	1.65 V	3.6 V	+ 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	SMD/SMT	VQFN-48	ARM Cortex M3	32 bit	48 MHz	128 kB	20 kB	12 bit	30 I/O	1.8 V	3.8 V	+ 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	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
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	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
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	SMD/SMT	LQFP-80	ARM Cortex M3	32 bit	100 MHz	128 kB	32 kB	12 bit	52 I/O	3.3 V	3.3 V	+ 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	SMD/SMT		ARM Cortex M3	32 bit	120 MHz	512 kB	96 kB	12 bit	165 I/O	3.3 V	3.3 V	+ 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	SMD/SMT	TFBGA-100	ARM Cortex M3	32 bit	180 MHz	1 MB	136 kB	2 x 10 bit	49 I/O	2.4 V	3.6 V	+ 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	SMD/SMT	LQFP-100	ARM Cortex M3	32 bit	84 MHz	512 kB	64 kB	12 bit	63 I/O	1.62 V	1.95 V	+ 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	SMD/SMT	QFN-24	ARM Cortex M3	32 bit	32 MHz	32 kB	4 kB	12 bit	17 I/O	1.98 V	3.8 V	+ 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	SMD/SMT	QFN-48	ARM Cortex M3	32 bit	40 MHz	256 kB	32 kB	12 bit	32 I/O	1.85 V	3.8 V	+ 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	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
ARM Microcontrollers - MCU High-performance Arm Cortex-M3 MCU 1 Mbyte of Flash , 120 MHz CPU, ART Accel STM32F205RGT6W STMicroelectronics 1: £15.21 44In Stock NRND	Mfr. Part No. STM32F205RGT6W Mouser Part No 511-STM32F205RGT6W NRND	STMicroelectronics	ARM Microcontrollers - MCU High-performance Arm Cortex-M3 MCU 1 Mbyte of Flash , 120 MHz CPU, ART Accel Learn More about STMicroelectronics stm32f2	Datasheet	44In Stock	£15.21 £12.06 £11.14 £10.32 View £10.13 £9.83 £9.82	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
ARM Microcontrollers - MCU 32BIT ARM Cortex M3 Connectivity 512kB STM32F215ZET6 STMicroelectronics 1: £11.86 130In Stock	Mfr. Part No. STM32F215ZET6 Mouser Part No 511-STM32F215ZET6	STMicroelectronics	ARM Microcontrollers - MCU 32BIT ARM Cortex M3 Connectivity 512kB Learn More about STMicroelectronics stm32f2	Datasheet	130In Stock	£11.86 £9.57 £8.96 £8.38 View £8.08 £7.94 £7.86	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	+ 85 C	Tray
ARM Microcontrollers - MCU 32-Bit Arm Cortex M3 128kb LCD Ultralow STM32L152RBT6 STMicroelectronics 1: £7.80 5In Stock NRND	Mfr. Part No. STM32L152RBT6 Mouser Part No 511-STM32L152RBT6 NRND	STMicroelectronics	ARM Microcontrollers - MCU 32-Bit Arm Cortex M3 128kb LCD Ultralow Learn More about STMicroelectronics stm32l1	Datasheet	5In Stock	£7.80 £6.04 £5.58 £5.01 View £4.88 £4.73	Min.: 1 Mult.: 1	SMD/SMT	LQFP-64	ARM Cortex M3	32 bit	32 MHz	128 kB	16 kB	12 bit	51 I/O	1.8 V	3.6 V	+ 85 C	Tray
ARM Microcontrollers - MCU 32BIT CORTEX M3 48PINS 16KB STM32F100C4T6B STMicroelectronics 1: £3.96 3,000Expected 18/01/2027	Mfr. Part No. STM32F100C4T6B Mouser Part No 511-STM32F100C4T6B	STMicroelectronics	ARM Microcontrollers - MCU 32BIT CORTEX M3 48PINS 16KB Learn More about STMicroelectronics stm32f1	Datasheet	3,000Expected 18/01/2027	£3.96 £2.92 £2.65 £2.44 View £2.24 £2.18 £2.14 £2.07	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
ARM Microcontrollers - MCU 32BIT CORTEX M3 64K Flash 8KB RAM STM32F100R8H6B STMicroelectronics 1: £5.43 3,836Expected 24/05/2027	Mfr. Part No. STM32F100R8H6B Mouser Part No 511-STM32F100R8H6B	STMicroelectronics	ARM Microcontrollers - MCU 32BIT CORTEX M3 64K Flash 8KB RAM Learn More about STMicroelectronics stm32f1	Datasheet	3,836Expected 24/05/2027	£5.43 £4.00 £3.72 £3.27 View £3.10 £2.78 £2.66 £2.59	Min.: 1 Mult.: 1	SMD/SMT		ARM Cortex M3	32 bit	24 MHz	128 kB	8 kB	12 bit	51 I/O	2 V	3.6 V	+ 85 C	Tray
ARM Microcontrollers - MCU 32-Bit ARM Cortex 64 Kbyte Value Line STM32F100R8T6BTR STMicroelectronics 1: £4.81 687Expected 10/12/2026	Mfr. Part No. STM32F100R8T6BTR Mouser Part No 511-STM32F100R8T6BTR	STMicroelectronics	ARM Microcontrollers - MCU 32-Bit ARM Cortex 64 Kbyte Value Line Learn More about STMicroelectronics stm32f1	Datasheet	687Expected 10/12/2026	Cut Tape £4.81 £3.68 £3.30 £3.09 View Reel £2.73 £3.00 £2.74 £2.73 MouseReel Available	Min.: 1 Mult.: 1 : 1,000			ARM Cortex M3	32 bit						2 V	3.6 V	+ 85 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU 32BIT Cortex M3 64KB 10KB RAM 1X12 ADC STM32F101C8T6 STMicroelectronics 1: £5.74 1,312Expected 20/09/2027	Mfr. Part No. STM32F101C8T6 Mouser Part No 511-STM32F101C8T6	STMicroelectronics	ARM Microcontrollers - MCU 32BIT Cortex M3 64KB 10KB RAM 1X12 ADC Learn More about STMicroelectronics stm32f1	Datasheet	1,312Expected 20/09/2027	£5.74 £4.22 £3.94 £3.46 View £3.28 £2.94 £2.88	Min.: 1 Mult.: 1	SMD/SMT	LQFP-48	ARM Cortex M3	32 bit	36 MHz	64 kB	10 kB	12 bit	48 I/O	2 V	3.6 V	+ 85 C	Tray
ARM Microcontrollers - MCU 32BIT Cortex M3 Access Line STM32F101CBT6TR STMicroelectronics 1: £6.20 2,398Expected 20/09/2027	Mfr. Part No. STM32F101CBT6TR Mouser Part No 511-STM32F101CBT6TR	STMicroelectronics	ARM Microcontrollers - MCU 32BIT Cortex M3 Access Line Learn More about STMicroelectronics stm32f1	Datasheet	2,398Expected 20/09/2027	Cut Tape £6.20 £4.32 £4.13 £3.58 View Reel £3.09 £3.42 £3.27 £3.09 £3.09 MouseReel Available	Min.: 1 Mult.: 1 : 2,400	SMD/SMT	LQFP-48	ARM Cortex M3	32 bit	36 MHz	128 kB	16 kB	12 bit	37 I/O	2 V	3.6 V	+ 85 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU 32BIT Cortex M3 High-density access STM32F101RCT6TR STMicroelectronics 1: £7.09 1,998Expected 07/04/2027	Mfr. Part No. STM32F101RCT6TR Mouser Part No 511-STM32F101RCT6TR	STMicroelectronics	ARM Microcontrollers - MCU 32BIT Cortex M3 High-density access Learn More about STMicroelectronics stm32f1	Datasheet	1,998Expected 07/04/2027	Cut Tape £7.09 £5.43 £4.85 £4.50 View Reel £4.05 £4.30 £4.08 £4.05 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
ARM Microcontrollers - MCU 32BIT Cortex M3 H/D ACCESS USB MCU STM32F101VCT6 STMicroelectronics 1: £7.63 2,157On Order	Mfr. Part No. STM32F101VCT6 Mouser Part No 511-STM32F101VCT6	STMicroelectronics	ARM Microcontrollers - MCU 32BIT Cortex M3 H/D ACCESS USB MCU Learn More about STMicroelectronics stm32f1	Datasheet	2,157On Order On Order Ship Dates Mfr. No: STM32F101VCT6 Stock: 0 On Order: 1,617 Expected 27/11/2026 540 Expected 30/08/2027 Factory Lead Time: 52 Weeks	£7.63 £5.51 £5.05 £4.96 £4.69	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
ARM Microcontrollers - MCU ARM 32Bit Access MCU 100-Pin 256kB Flash STM32F101VCT6TR STMicroelectronics 1: £7.63 999Expected 18/10/2027	Mfr. Part No. STM32F101VCT6TR Mouser Part No 511-STM32F101VCT6TR	STMicroelectronics	ARM Microcontrollers - MCU ARM 32Bit Access MCU 100-Pin 256kB Flash Learn More about STMicroelectronics stm32f1	Datasheet	999Expected 18/10/2027	Cut Tape £7.63 £5.90 £5.23 £5.02 £4.40 Reel £4.30 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
ARM Microcontrollers - MCU XL-Density Access Line 32-Bit 768 Kb STM32F101VFT6 STMicroelectronics 1: £10.25 540Expected 05/04/2027	Mfr. Part No. STM32F101VFT6 Mouser Part No 511-STM32F101VFT6	STMicroelectronics	ARM Microcontrollers - MCU XL-Density Access Line 32-Bit 768 Kb Learn More about STMicroelectronics stm32f1	Datasheet	540Expected 05/04/2027	£10.25 £7.73 £7.12 £6.89 £6.63	Min.: 1 Mult.: 1	SMD/SMT	LQFP-100	ARM Cortex M3	32 bit	36 MHz	768 kB	80 kB	12 bit	112 I/O	2 V	3.6 V	+ 85 C	Tray
ARM Microcontrollers - MCU 32-Bit ARM Cortex 128kb Performance STM32F103CBU6 STMicroelectronics 1: £6.13 3,112On Order	Mfr. Part No. STM32F103CBU6 Mouser Part No 511-STM32F103CBU6	STMicroelectronics	ARM Microcontrollers - MCU 32-Bit ARM Cortex 128kb Performance Learn More about STMicroelectronics stm32f1	Datasheet	3,112On Order On Order Ship Dates Mfr. No: STM32F103CBU6 Stock: 0 On Order: 1,552 Expected 05/11/2026 1,560 Expected 10/05/2027 Factory Lead Time: 40 Weeks	£6.13 £4.68 £4.19 £3.95 View £3.76 £3.66	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