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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 ARM Cortex M3 Connectivity 512kB STM32F217ZET6 STMicroelectronics 1: £14.04 55In Stock	Mfr. Part No. STM32F217ZET6 Mouser Part No 511-STM32F217ZET6	STMicroelectronics	ARM Microcontrollers - MCU 32BIT ARM Cortex M3 Connectivity 512kB Learn More about STMicroelectronics stm32f2	Datasheet	55In Stock	£14.04 £11.13 £9.86 £9.29 View £8.68 £8.34 Quote	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 Ultra-low-power 32-bit Value Line Arm Cortex-M3 MCU 256 Kbytes of Flash 32 MHz C STM32L100RCT6TR STMicroelectronics 1: £6.51 47In Stock 1,000Expected 22/02/2027	Mfr. Part No. STM32L100RCT6TR Mouser Part No 511-STM32L100RCT6TR	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power 32-bit Value Line Arm Cortex-M3 MCU 256 Kbytes of Flash 32 MHz C Learn More about STMicroelectronics stm32l1	Datasheet	47In Stock 1,000Expected 22/02/2027	Cut Tape £6.51 £4.98 £4.43 £4.16 View Reel £3.65 £4.02 £3.76 £3.65 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	SMD/SMT	LQFP-64	ARM Cortex M3	32 bit	32 MHz	256 kB	16 kB	12 bit	51 I/O	1.8 V	3.6 V	+ 85 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M3 MCU 32 Kbytes of Flash , 32 MHz CPU, USB STM32L151C6T6ATR STMicroelectronics 1: £3.52 52In Stock 4,800On Order	Mfr. Part No. STM32L151C6T6ATR Mouser Part No 511-STM32L151C6T6ATR	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M3 MCU 32 Kbytes of Flash , 32 MHz CPU, USB Learn More about STMicroelectronics stm32l1	Datasheet	52In Stock 4,800On Order On Order Ship Dates Mfr. No: STM32L151C6T6ATR Stock: 52 Can Dispatch Immediately On Order: 2,400 Expected 02/08/2027 2,400 TBD Factory Lead Time: 40 Weeks	Cut Tape £3.52 £2.72 £2.41 £2.31 View Reel £2.23 £2.30 £2.23 £2.23 MouseReel Available	Min.: 1 Mult.: 1 : 2,400	SMD/SMT	LQFP-48	ARM Cortex M3	32 bit	32 MHz	32 kB	10 kB	12 bit	37 I/O	1.65 V	3.6 V	+ 85 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M3 MCU 64 Kbytes of Flash , 32 MHz CPU, USB STM32L151C8U6A STMicroelectronics 1: £5.50 10In Stock 1,560Expected 22/03/2027	Mfr. Part No. STM32L151C8U6A Mouser Part No 511-STM32L151C8U6A	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M3 MCU 64 Kbytes of Flash , 32 MHz CPU, USB Learn More about STMicroelectronics stm32l1	Datasheet	10In Stock 1,560Expected 22/03/2027	£5.50 £4.05 £3.76 £3.18 View £3.01 £2.79 £2.76	Min.: 1 Mult.: 1	SMD/SMT	UFQPFN-48	ARM Cortex M3	32 bit	32 MHz	64 kB	10 kB	12 bit	37 I/O	1.65 V	3.6 V	+ 85 C	Tray
ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M3 MCU 256 Kbytes of Flash 32 MHz CPU, USB, 2xOp-amp STM32L151CCT6TR STMicroelectronics 1: £6.63 33In Stock 4,800On Order	Mfr. Part No. STM32L151CCT6TR Mouser Part No 511-STM32L151CCT6TR	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	33In Stock 4,800On Order	Cut Tape £6.63 £5.11 £4.52 £4.28 View Reel £3.41 £4.21 £3.76 £3.58 £3.41 MouseReel Available	Min.: 1 Mult.: 1 : 2,400	SMD/SMT	LQFP-48	ARM Cortex M3	32 bit	32 MHz	256 kB	32 kB	12 bit	37 I/O	1.65 V	3.6 V	+ 85 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M3 MCU 64 Kbytes of Flash , 32 MHz CPU, USB STM32L151R8T6A STMicroelectronics 1: £5.13 21In Stock	Mfr. Part No. STM32L151R8T6A Mouser Part No 511-STM32L151R8T6A	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M3 MCU 64 Kbytes of Flash , 32 MHz CPU, USB Learn More about STMicroelectronics stm32l1	Datasheet	21In Stock	£5.13 £3.94 £3.46 £3.22 View £3.13 £3.08 £2.85 Quote	Min.: 1 Mult.: 1	SMD/SMT	LQFP-64	ARM Cortex M3	32 bit	32 MHz	64 kB	10 kB	12 bit	51 I/O	1.65 V	3.6 V	+ 85 C	Tray
ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M3 MCU 128 Kbytes of Flash , 32 MHz CPU, USB STM32L151RBT6ATR STMicroelectronics 1: £6.09 7In Stock 2,000Expected 22/02/2027	Mfr. Part No. STM32L151RBT6ATR Mouser Part No 511-STM32L151RBT6ATR	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	7In Stock 2,000Expected 22/02/2027	Cut Tape £6.09 £4.38 £4.06 £3.72 View Reel £3.36 £3.62 £3.37 £3.36 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	SMD/SMT	LQFP-64	ARM Cortex M3	32 bit	32 MHz	128 kB	16 kB	12 bit	51 I/O	1.65 V	3.6 V	+ 85 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M3 MCU 64 Kbytes of Flash , 32 MHz CPU, USB STM32L151V8T6A STMicroelectronics 1: £5.65 324In Stock	Mfr. Part No. STM32L151V8T6A Mouser Part No 511-STM32L151V8T6A	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M3 MCU 64 Kbytes of Flash , 32 MHz CPU, USB Learn More about STMicroelectronics stm32l1	Datasheet	324In Stock	£5.65 £4.16 £3.88 £3.62 View £3.45 £3.23 £3.19 Quote	Min.: 1 Mult.: 1	SMD/SMT	LQFP-100	ARM Cortex M3	32 bit	32 MHz	128 kB	32 kB	12 bit	83 I/O	1.65 V	3.6 V	+ 85 C	Tray
ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M3 MCU 64 Kbytes of Flash , 32 MHz CPU, LCD, USB STM32L152C8T6A STMicroelectronics 1: £4.96 342In Stock 1,500Expected 22/02/2027	Mfr. Part No. STM32L152C8T6A Mouser Part No 511-STM32L152C8T6A	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M3 MCU 64 Kbytes of Flash , 32 MHz CPU, LCD, USB Learn More about STMicroelectronics stm32l1	Datasheet	342In Stock 1,500Expected 22/02/2027	£4.96 £3.80 £3.33 £3.20 View £3.04 £3.01 £2.78 £2.73 Quote	Min.: 1 Mult.: 1	SMD/SMT	LQFP-48	ARM Cortex M3	32 bit	32 MHz	64 kB	10 kB	12 bit	37 I/O	1.65 V	3.6 V	+ 85 C	Tray
ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M3 MCU 128 Kbytes of Flash , 32 MHz CPU, LCD, USB STM32L152RBT6A STMicroelectronics 1: £6.03 34In Stock 27,840On Order	Mfr. Part No. STM32L152RBT6A Mouser Part No 511-STM32L152RBT6A	STMicroelectronics	ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M3 MCU 128 Kbytes of Flash , 32 MHz CPU, LCD, USB Learn More about STMicroelectronics stm32l1	Datasheet	34In Stock 27,840On Order	£6.03 £4.64 £4.61 £4.00 View £3.90 £3.68	Min.: 1 Mult.: 1	SMD/SMT	LQFP-64	ARM Cortex M3	32 bit	32 MHz	128 kB	16 kB	12 bit	51 I/O	1.65 V	3.6 V	+ 85 C	Tray
ARM Microcontrollers - MCU STM32L15 Low Power M3 384kB 32MHz MCU STM32L152RDT6 STMicroelectronics 1: £8.32 26In Stock	Mfr. Part No. STM32L152RDT6 Mouser Part No 511-STM32L152RDT6	STMicroelectronics	ARM Microcontrollers - MCU STM32L15 Low Power M3 384kB 32MHz MCU Learn More about STMicroelectronics stm32l1	Datasheet	26In Stock	£8.32 £6.81 £6.22 £5.62 View £5.45 £4.70	Min.: 1 Mult.: 1	SMD/SMT	LQFP-64	ARM Cortex M3	32 bit	32 MHz	384 kB	48 kB	12 bit	51 I/O	1.65 V	3.6 V	+ 85 C	Tray
ARM Microcontrollers - MCU STM32L15 Low Power M3 384kB 32MHz MCU STM32L152ZDT6 STMicroelectronics 1: £11.13 56In Stock	Mfr. Part No. STM32L152ZDT6 Mouser Part No 511-STM32L152ZDT6	STMicroelectronics	ARM Microcontrollers - MCU STM32L15 Low Power M3 384kB 32MHz MCU Learn More about STMicroelectronics stm32l1	Datasheet	56In Stock	£11.13 £8.76 £7.73 £7.45 View £7.37 £6.56 £6.50 Quote	Min.: 1 Mult.: 1	SMD/SMT	LQFP-144	ARM Cortex M3	32 bit	32 MHz	384 kB	48 kB	12 bit	115 I/O	1.65 V	3.6 V	+ 85 C	Tray
ARM Microcontrollers - MCU STM32L16 Low Power M3 384kB 32MHz MCU STM32L162RDT6 STMicroelectronics 1: £8.44 41In Stock 960Expected 22/02/2027	Mfr. Part No. STM32L162RDT6 Mouser Part No 511-STM32L162RDT6	STMicroelectronics	ARM Microcontrollers - MCU STM32L16 Low Power M3 384kB 32MHz MCU Learn More about STMicroelectronics stm32l1	Datasheet	41In Stock 960Expected 22/02/2027	£8.44 £6.57 £5.82 £5.45 View £5.32 £5.03 £5.02 Quote	Min.: 1 Mult.: 1	SMD/SMT	LQFP-64	ARM Cortex M3	32 bit	32 MHz	384 kB	48 kB	12 bit	51 I/O	1.65 V	3.6 V	+ 85 C	Tray
ARM Microcontrollers - MCU LQFP, Green, IND TEMP, MRL A ATSAM3N00BA-AU Microchip Technology 1: £2.70 342In Stock	Mfr. Part No. ATSAM3N00BA-AU Mouser Part No 556-ATSAM3N00BA-AU	Microchip Technology	ARM Microcontrollers - MCU LQFP, Green, IND TEMP, MRL A Learn More about Microchip Technology microchip sam3n mcu	Datasheet	342In Stock	£2.70 £2.45 £2.23	Min.: 1 Mult.: 1	SMD/SMT	LQFP-64	ARM Cortex M3	32 bit	48 MHz	16 kB	4 kB	10 bit	47 I/O	1.8 V	3.6 V	+ 85 C	Tray
ARM Microcontrollers - MCU LQFP, Grn, IT, MRL a ATSAM3N0AA-AU Microchip Technology 1: £2.45 125In Stock	Mfr. Part No. ATSAM3N0AA-AU Mouser Part No 556-ATSAM3N0AA-AU	Microchip Technology	ARM Microcontrollers - MCU LQFP, Grn, IT, MRL a Learn More about Microchip Technology microchip sam3n mcu	Datasheet	125In Stock	£2.45 £2.23 £2.03	Min.: 1 Mult.: 1	SMD/SMT	LQFP-48	ARM Cortex M3	32 bit	48 MHz	32 kB	8 kB	10 bit	34 I/O	1.8 V	3.6 V	+ 85 C	Tray
ARM Microcontrollers - MCU LQFP, Grn, IT, MRL B ATSAM3N1AB-AU Microchip Technology 1: £2.45 108In Stock	Mfr. Part No. ATSAM3N1AB-AU Mouser Part No 556-ATSAM3N1AB-AU	Microchip Technology	ARM Microcontrollers - MCU LQFP, Grn, IT, MRL B Learn More about Microchip Technology microchip sam3n mcu	Datasheet	108In Stock	£2.45 £2.23 £2.03	Min.: 1 Mult.: 1	SMD/SMT	LQFP-48	ARM Cortex M3	32 bit	48 MHz	64 kB	4 kB	10 bit	32 I/O	1.62 V	1.95 V	+ 85 C	Tray
ARM Microcontrollers - MCU MRL A 128K Flash 32K SRAM Ind Temp ATSAM3S2BA-AU Microchip Technology 1: £3.95 29In Stock 160Expected 03/11/2026	Mfr. Part No. ATSAM3S2BA-AU Mouser Part No 556-ATSAM3S2BA-AU	Microchip Technology	ARM Microcontrollers - MCU MRL A 128K Flash 32K SRAM Ind Temp Learn More about Microchip Technology microchip sam3s mcu	Datasheet	29In Stock 160Expected 03/11/2026	£3.95 £3.58 £3.25	Min.: 1 Mult.: 1	SMD/SMT	QFP-64	ARM Cortex M3	32 bit	64 MHz	128 kB	32 kB	12 bit	47 I/O	1.62 V	1.9 V	+ 85 C	Tray
ARM Microcontrollers - MCU MRL A 128K Flash 32K SRAM Ind Temp ATSAM3S2CA-AU Microchip Technology 1: £4.16 1In Stock	Mfr. Part No. ATSAM3S2CA-AU Mouser Part No 556-ATSAM3S2CA-AU	Microchip Technology	ARM Microcontrollers - MCU MRL A 128K Flash 32K SRAM Ind Temp Learn More about Microchip Technology microchip sam3s mcu	Datasheet	1In Stock	£4.16 £3.80 £3.44	Min.: 1 Mult.: 1	SMD/SMT	QFP-100	ARM Cortex M3	32 bit	64 MHz	128 kB	32 kB	12 bit	79 I/O	1.62 V	1.9 V	+ 85 C	Tray
ARM Microcontrollers - MCU MRL A 256K Flash 48K SRAM Ind Temp ATSAM3S4AA-AU Microchip Technology 1: £4.65 26In Stock	Mfr. Part No. ATSAM3S4AA-AU Mouser Part No 556-ATSAM3S4AA-AU	Microchip Technology	ARM Microcontrollers - MCU MRL A 256K Flash 48K SRAM Ind Temp Learn More about Microchip Technology microchip sam3s mcu	Datasheet	26In Stock	£4.65 £4.23 £3.82	Min.: 1 Mult.: 1	SMD/SMT	QFP-48	ARM Cortex M3	32 bit	64 MHz	256 kB	48 kB	12 bit	34 I/O	1.62 V	1.9 V	+ 85 C	Tray
ARM Microcontrollers - MCU MRL A 256K Flash 48K SRAM Ind Temp ATSAM3S4CA-AU Microchip Technology 1: £5.20 10In Stock	Mfr. Part No. ATSAM3S4CA-AU Mouser Part No 556-ATSAM3S4CA-AU	Microchip Technology	ARM Microcontrollers - MCU MRL A 256K Flash 48K SRAM Ind Temp Learn More about Microchip Technology microchip sam3s mcu	Datasheet	10In Stock	£5.20 £4.71 £4.28	Min.: 1 Mult.: 1	SMD/SMT	QFP-100	ARM Cortex M3	32 bit	64 MHz	256 kB	48 kB	12 bit	79 I/O	1.62 V	1.9 V	+ 85 C	Tray
ARM Microcontrollers - MCU 256K Flash, 52K SRAM 32-bit ARM Cortex M3 ATSAM3U4CA-AU Microchip Technology 1: £5.72 81In Stock 180Expected 25/02/2027	Mfr. Part No. ATSAM3U4CA-AU Mouser Part No 556-ATSAM3U4CA-AU	Microchip Technology	ARM Microcontrollers - MCU 256K Flash, 52K SRAM 32-bit ARM Cortex M3 Learn More about Microchip Technology microchip sam3u mcus	Datasheet	81In Stock 180Expected 25/02/2027	£5.72 £5.20 £4.71	Min.: 1 Mult.: 1	SMD/SMT	LQFP-100	ARM Cortex M3	32 bit	96 MHz	256 kB	52 kB	12 bit	57 I/O	1.62 V	1.95 V	+ 85 C	Tray
RF Microcontrollers - MCU SimpleLink 32-bit A rm Cortex-M3 Sub-1 G A 595-CC1310F128RGZR CC1310F128RGZT Texas Instruments 1: £6.65 16In Stock 750Expected 12/11/2026	Mfr. Part No. CC1310F128RGZT Mouser Part No 595-CC1310F128RGZT	Texas Instruments	RF Microcontrollers - MCU SimpleLink 32-bit A rm Cortex-M3 Sub-1 G A 595-CC1310F128RGZR Learn More about Texas Instruments ti cc1310 simplelink mcu	Datasheet	16In Stock 750Expected 12/11/2026	Cut Tape £6.65 £5.33 £4.98 £4.56 Reel £4.32 MouseReel Available	Min.: 1 Mult.: 1 : 250	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
RF Microcontrollers - MCU Proprietary SoC 4x4 Flash size 128kB A 5 A 595-CC1310F128RSMR CC1310F128RSMT Texas Instruments 1: £6.25 58In Stock 250Expected 13/05/2027	Mfr. Part No. CC1310F128RSMT Mouser Part No 595-CC1310F128RSMT	Texas Instruments	RF Microcontrollers - MCU Proprietary SoC 4x4 Flash size 128kB A 5 A 595-CC1310F128RSMR Learn More about Texas Instruments ti cc1310 simplelink mcu	Datasheet	58In Stock 250Expected 13/05/2027	Cut Tape £6.25 £5.10 £4.77 £4.37 Reel £4.09 View £3.98 £3.73 £3.66 Quote MouseReel Available	Min.: 1 Mult.: 1 : 250	SMD/SMT	VQFN-32	ARM Cortex M3	32 bit	48 MHz	128 kB	20 kB	12 bit	10 I/O	1.8 V	3.8 V	+ 85 C	Reel, Cut Tape, MouseReel
RF Microcontrollers - MCU SimpleLink 32-bit A rm Cortex-M3 Sub-1 G A 595-CC1310F64RGZR CC1310F64RGZT Texas Instruments 1: £5.65 40In Stock	Mfr. Part No. CC1310F64RGZT Mouser Part No 595-CC1310F64RGZT	Texas Instruments	RF Microcontrollers - MCU SimpleLink 32-bit A rm Cortex-M3 Sub-1 G A 595-CC1310F64RGZR Learn More about Texas Instruments ti cc1310 simplelink mcu	Datasheet	40In Stock	Cut Tape £5.65 £4.85 £4.59 £4.02 Reel £4.02 MouseReel Available	Min.: 1 Mult.: 1 : 250	SMD/SMT	VQFN-48	ARM Cortex M3	32 bit	48 MHz	64 kB	16 kB	12 bit	30 I/O	1.8 V	3.8 V	+ 85 C	Reel, Cut Tape, MouseReel
RF Microcontrollers - MCU Proprietary SoC 5x5 Flash size 64kB A 59 A 595-CC1310F64RHBR CC1310F64RHBT Texas Instruments 1: £5.66 7In Stock	Mfr. Part No. CC1310F64RHBT Mouser Part No 595-CC1310F64RHBT	Texas Instruments	RF Microcontrollers - MCU Proprietary SoC 5x5 Flash size 64kB A 59 A 595-CC1310F64RHBR Learn More about Texas Instruments ti cc1310 simplelink mcu	Datasheet	7In Stock	Cut Tape £5.66 £4.37 £4.04 £3.68 Reel £3.40 MouseReel Available	Min.: 1 Mult.: 1 : 250	SMD/SMT	VQFN-32	ARM Cortex M3	32 bit	48 MHz	64 kB	16 kB	12 bit	15 I/O	1.8 V	3.8 V	+ 85 C	Reel, Cut Tape, MouseReel