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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 Mainstream Performance line, Arm Cortex-M3 MCU 256 Kbytes of Flash 72 MHz CPU, m STM32F103RCT7TR STMicroelectronics 1: £8.35 1,000On Order	Mfr. Part No. STM32F103RCT7TR Mouser Part No 511-STM32F103RCT7TR	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	1,000On Order	Cut Tape £8.35 £6.50 £6.01 £5.45 View Reel £4.85 £5.34 £4.97 £4.85 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	SMD/SMT	LQFP-64	ARM Cortex M3	32 bit	72 MHz	256 kB	48 kB	12 bit	51 I/O	2 V	3.6 V	+ 105 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU 32BIT Cortex M3 H/D 257 to 512 USB/CAN STM32F103RDT6 STMicroelectronics 1: £7.98 1,883On Order	Mfr. Part No. STM32F103RDT6 Mouser Part No 511-STM32F103RDT6	STMicroelectronics	ARM Microcontrollers - MCU 32BIT Cortex M3 H/D 257 to 512 USB/CAN Learn More about STMicroelectronics stm32f1	Datasheet	1,883On Order On Order Ship Dates Mfr. No: STM32F103RDT6 Stock: 0 On Order: 923 Expected 07/04/2027 960 TBD Factory Lead Time: 52 Weeks	£7.98 £6.30 £5.87 £5.33 £5.24	Min.: 1 Mult.: 1	SMD/SMT	LQFP-64	ARM Cortex M3	32 bit	72 MHz	384 kB	64 kB	12 bit	51 I/O	2 V	3.6 V	+ 85 C	Tray
ARM Microcontrollers - MCU 32-Bit ARM Cortex XL Density 1Mb Flash STM32F103RGT7 STMicroelectronics 1: £12.38 958Expected 29/03/2027	Mfr. Part No. STM32F103RGT7 Mouser Part No 511-STM32F103RGT7	STMicroelectronics	ARM Microcontrollers - MCU 32-Bit ARM Cortex XL Density 1Mb Flash Learn More about STMicroelectronics stm32f1	Datasheet	958Expected 29/03/2027	£12.38 £9.71 £8.98 £8.29 View £8.04 £7.73	Min.: 1 Mult.: 1	SMD/SMT	LQFP-64	ARM Cortex M3	32 bit	72 MHz	1 MB	96 kB	12 bit	112 I/O	2 V	3.6 V	+ 105 C	Tray
ARM Microcontrollers - MCU 32BIT Cortex M3 Performance LINE STM32F103T8U7 STMicroelectronics 1: £6.18 2,922Expected 14/06/2027	Mfr. Part No. STM32F103T8U7 Mouser Part No 511-STM32F103T8U7	STMicroelectronics	ARM Microcontrollers - MCU 32BIT Cortex M3 Performance LINE Learn More about STMicroelectronics stm32f1	Datasheet	2,922Expected 14/06/2027	£6.18 £4.76 £4.44 £4.02 View £3.72 £3.62	Min.: 1 Mult.: 1	SMD/SMT	UFQFPN-36	ARM Cortex M3	32 bit	72 MHz	64 kB	20 kB	12 bit	26 I/O	2 V	3.6 V	+ 105 C	Tray
ARM Microcontrollers - MCU 32BIT Cortex M3 H/D 261 to 512 USB/CAN STM32F103ZCT6 STMicroelectronics 1: £9.45 1,282On Order	Mfr. Part No. STM32F103ZCT6 Mouser Part No 511-STM32F103ZCT6	STMicroelectronics	ARM Microcontrollers - MCU 32BIT Cortex M3 H/D 261 to 512 USB/CAN Learn More about STMicroelectronics stm32f1	Datasheet	1,282On Order On Order Ship Dates Mfr. No: STM32F103ZCT6 Stock: 0 On Order: 562 Expected 08/11/2027 720 TBD Factory Lead Time: 52 Weeks	£9.45 £7.61 £6.98 £6.70 View £6.53 £5.95	Min.: 1 Mult.: 1	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	+ 85 C	Tray
ARM Microcontrollers - MCU 32BIT Cortex M3 H/D 262 to 512 USB/CAN STM32F103ZDT6 STMicroelectronics 1: £10.48 358On Order	Mfr. Part No. STM32F103ZDT6 Mouser Part No 511-STM32F103ZDT6	STMicroelectronics	ARM Microcontrollers - MCU 32BIT Cortex M3 H/D 262 to 512 USB/CAN Learn More about STMicroelectronics stm32f1	Datasheet	358On Order	£10.48 £8.22 £7.61 £7.03 £6.78	Min.: 1 Mult.: 1	SMD/SMT	LQFP-144	ARM Cortex M3	32 bit	72 MHz	384 kB	64 kB	12 bit	112 I/O	2 V	3.6 V	+ 85 C	Tray
ARM Microcontrollers - MCU 32-Bit Cortex 64Kb Connectivity Line STM32F105RCT7 STMicroelectronics 1: £8.53 897On Order	Mfr. Part No. STM32F105RCT7 Mouser Part No 511-STM32F105RCT7	STMicroelectronics	ARM Microcontrollers - MCU 32-Bit Cortex 64Kb Connectivity Line Learn More about STMicroelectronics stm32f1	Datasheet	897On Order	£8.53 £6.63 £6.33 £5.50 View £5.19 £4.90	Min.: 1 Mult.: 1	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	+ 105 C	Tray
ARM Microcontrollers - MCU 32BIT Cortex 64/25 CONNECTIVITY LINE M3 STM32F107VBT6 STMicroelectronics 1: £7.49 1,030Expected 08/12/2026	Mfr. Part No. STM32F107VBT6 Mouser Part No 511-STM32F107VBT6	STMicroelectronics	ARM Microcontrollers - MCU 32BIT Cortex 64/25 CONNECTIVITY LINE M3 Learn More about STMicroelectronics STM32F107	Datasheet	1,030Expected 08/12/2026	£7.49 £6.01 £5.77 £5.58 £5.03	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 32BIT CORTEX M3 256K Flash 6KB RAM STM32F107VCH6 STMicroelectronics 1: £8.59 2,008Expected 13/01/2027	Mfr. Part No. STM32F107VCH6 Mouser Part No 511-STM32F107VCH6	STMicroelectronics	ARM Microcontrollers - MCU 32BIT CORTEX M3 256K Flash 6KB RAM Learn More about STMicroelectronics STM32F107	Datasheet	2,008Expected 13/01/2027	£8.59 £6.96 £6.47 £5.94	Min.: 1 Mult.: 1	SMD/SMT	BGA-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 32BIT ARM Cortex M3 Connectivity 768kB STM32F205ZFT6 STMicroelectronics 1: £13.48 360Expected 22/02/2027	Mfr. Part No. STM32F205ZFT6 Mouser Part No 511-STM32F205ZFT6	STMicroelectronics	ARM Microcontrollers - MCU 32BIT ARM Cortex M3 Connectivity 768kB Learn More about STMicroelectronics stm32f2	Datasheet	360Expected 22/02/2027	£13.48 £9.65 £9.45 £9.12	Min.: 1 Mult.: 1	SMD/SMT	LQFP-144	ARM Cortex M3	32 bit	120 MHz	768 kB	128 kB	12 bit	114 I/O	1.8 V	3.6 V	+ 85 C	Tray
ARM Microcontrollers - MCU 32BIT ARM Cortex M3 Connectivity 1024kB STM32F205ZGT6 STMicroelectronics 1: £13.72 720Expected 22/02/2027	Mfr. Part No. STM32F205ZGT6 Mouser Part No 511-STM32F205ZGT6	STMicroelectronics	ARM Microcontrollers - MCU 32BIT ARM Cortex M3 Connectivity 1024kB Learn More about STMicroelectronics stm32f2	Datasheet	720Expected 22/02/2027	£13.72 £11.08 £9.89 £9.32 View £9.30 £9.29	Min.: 1 Mult.: 1	SMD/SMT	LQFP-144	ARM Cortex M3	32 bit	120 MHz	1 MB	128 kB	12 bit	114 I/O	1.8 V	3.6 V	+ 85 C	Tray
ARM Microcontrollers - MCU 32-Bit ARM Cortex 512kb Connectivity STM32F207IEH6 STMicroelectronics 1: £14.98 1,002Expected 11/03/2027	Mfr. Part No. STM32F207IEH6 Mouser Part No 511-STM32F207IEH6	STMicroelectronics	ARM Microcontrollers - MCU 32-Bit ARM Cortex 512kb Connectivity Learn More about STMicroelectronics stm32f2	Datasheet	1,002Expected 11/03/2027	£14.98 £11.88 £10.97 £10.14 View £9.95 £9.91	Min.: 1 Mult.: 1	SMD/SMT	BGA-176	ARM Cortex M3	32 bit	120 MHz	512 kB	128 kB			1.8 V	3.6 V	+ 85 C	Tray
ARM Microcontrollers - MCU 32BIT ARM Cortex M3 Connectivity 1024kB STM32F215VGT6 STMicroelectronics 1: £13.30 539On Order	Mfr. Part No. STM32F215VGT6 Mouser Part No 511-STM32F215VGT6	STMicroelectronics	ARM Microcontrollers - MCU 32BIT ARM Cortex M3 Connectivity 1024kB Learn More about STMicroelectronics stm32f2	Datasheet	539On Order	£13.30 £10.54 £9.14 £8.89 View £8.79 £8.35 £8.28 Quote	Min.: 1 Mult.: 1	SMD/SMT	LQFP-100	ARM Cortex M3	32 bit	120 MHz	1 MB	128 kB	12 bit	82 I/O	1.8 V	3.6 V	+ 85 C	Tray
ARM Microcontrollers - MCU 32BIT ARM Cortex M3 Connectivity 1024kB STM32F217VGT6TR STMicroelectronics 1: £14.54 792Expected 24/02/2027	Mfr. Part No. STM32F217VGT6TR Mouser Part No 511-STM32F217VGT6TR	STMicroelectronics	ARM Microcontrollers - MCU 32BIT ARM Cortex M3 Connectivity 1024kB Learn More about STMicroelectronics stm32f2	Datasheet	792Expected 24/02/2027	Cut Tape £14.54 £11.53 £10.67 £9.95 £9.32 Reel £9.12 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	SMD/SMT	LQFP-100	ARM Cortex M3	32 bit	120 MHz	1 MB	128 kB	12 bit	82 I/O	1.8 V	3.6 V	+ 85 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU 32BIT ARM Cortex M3 Connectivity 1024kB STM32F217ZGT6 STMicroelectronics 1: £16.43 720Expected 22/02/2027	Mfr. Part No. STM32F217ZGT6 Mouser Part No 511-STM32F217ZGT6	STMicroelectronics	ARM Microcontrollers - MCU 32BIT ARM Cortex M3 Connectivity 1024kB Learn More about STMicroelectronics stm32f2	Datasheet	720Expected 22/02/2027	£16.43 £13.01 £12.07 £11.66 £10.38	Min.: 1 Mult.: 1	SMD/SMT	LQFP-144	ARM Cortex M3	32 bit	120 MHz	1 MB	128 kB	12 bit	114 I/O	1.8 V	3.6 V	+ 85 C	Tray
ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M3 MCU 64 Kbytes of Flash , 32 MHz CPU, USB STM32L151C8T6A STMicroelectronics 1: £5.28 1,428On Order	Mfr. Part No. STM32L151C8T6A Mouser Part No 511-STM32L151C8T6A	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	1,428On Order	£5.28 £4.05 £3.55 £3.35 View £3.19 £2.97 £2.90 £2.85 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 M3 ARM 128 Kbytes 32 MHz STM32L151CCT6 STMicroelectronics 1: £6.63 1,987Expected 26/02/2027	Mfr. Part No. STM32L151CCT6 Mouser Part No 511-STM32L151CCT6	STMicroelectronics	ARM Microcontrollers - MCU Ultra Low M3 ARM 128 Kbytes 32 MHz Learn More about STMicroelectronics stm32l1	Datasheet	1,987Expected 26/02/2027	£6.63 £5.08 £4.52 £4.24 View £4.05 £4.01	Min.: 1 Mult.: 1	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	Tray
ARM Microcontrollers - MCU Ultra Low M3 ARM 128 Kbytes 32 MHz STM32L151RCT6 STMicroelectronics 1: £6.69 1,920Expected 01/03/2027	Mfr. Part No. STM32L151RCT6 Mouser Part No 511-STM32L151RCT6	STMicroelectronics	ARM Microcontrollers - MCU Ultra Low M3 ARM 128 Kbytes 32 MHz Learn More about STMicroelectronics stm32l1	Datasheet	1,920Expected 01/03/2027	£6.69 £5.08 £4.69 £4.20 View £4.10 £3.85	Min.: 1 Mult.: 1	SMD/SMT	LQFP-64	ARM Cortex M3	32 bit	32 MHz	256 kB	32 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 512 Kbytes of Flash 32 MHz CPU, USB, 2xOp-amp STM32L151RET6 STMicroelectronics 1: £8.56 1,907Expected 23/02/2027	Mfr. Part No. STM32L151RET6 Mouser Part No 511-STM32L151RET6	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	1,907Expected 23/02/2027	£8.56 £6.67 £6.32 £5.96 View £5.83 £5.44 £5.38	Min.: 1 Mult.: 1	SMD/SMT	LQFP-64	ARM Cortex M3	32 bit	32 MHz	512 kB	80 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 512 Kbytes of Flash 32 MHz CPU, USB, 2xOp-amp STM32L151RET6TR STMicroelectronics 1: £8.71 1,673Expected 23/02/2027	Mfr. Part No. STM32L151RET6TR Mouser Part No 511-STM32L151RET6TR	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	1,673Expected 23/02/2027	Cut Tape £8.71 £6.78 £6.28 £5.68 View Reel £5.07 £5.58 £5.19 £5.07 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	SMD/SMT	LQFP-64	ARM Cortex M3	32 bit	32 MHz	512 kB	80 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 512 Kbytes of Flash 32 MHz CPU, MCD, USB, 2xOp STM32L151VET6D STMicroelectronics 1: £9.86 540On Order	Mfr. Part No. STM32L151VET6D Mouser Part No 511-STM32L151VET6D	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	540On Order	£9.86 £8.01 £7.64 £6.63 View £6.34 £5.95	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
ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M3 MCU 64 Kbytes of Flash , 32 MHz CPU, LCD, USB STM32L152R8T6A STMicroelectronics 1: £6.14 947Expected 22/02/2027	Mfr. Part No. STM32L152R8T6A Mouser Part No 511-STM32L152R8T6A	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	947Expected 22/02/2027	£6.14 £4.30 £4.09 £3.56 View £3.40 £3.16	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 STM32L16 Low Power M3 384kB 32MHz MCU STM32L162VDT6 STMicroelectronics 1: £9.34 539Expected 22/02/2027	Mfr. Part No. STM32L162VDT6 Mouser Part No 511-STM32L162VDT6	STMicroelectronics	ARM Microcontrollers - MCU STM32L16 Low Power M3 384kB 32MHz MCU Learn More about STMicroelectronics stm32l1	Datasheet	539Expected 22/02/2027	£9.34 £7.59 £7.25 £6.29 View £6.01 £5.62	Min.: 1 Mult.: 1	SMD/SMT	LQFP-100	ARM Cortex M3	32 bit	32 MHz	384 kB	48 kB	12 bit	83 I/O	1.8 V	3.6 V	+ 85 C	Tray
ARM Microcontrollers - MCU STM32L16 Low Power M3 384kB 32MHz MCU STM32L162ZDT6 STMicroelectronics 1: £11.39 529Expected 22/02/2027	Mfr. Part No. STM32L162ZDT6 Mouser Part No 511-STM32L162ZDT6	STMicroelectronics	ARM Microcontrollers - MCU STM32L16 Low Power M3 384kB 32MHz MCU Learn More about STMicroelectronics stm32l1	Datasheet	529Expected 22/02/2027	£11.39 £8.94 £8.11 £7.63 View £7.56 £7.11	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 256K Flash, 52K SRAM 32-bit ARM Cortex M3 ATSAM3U4EA-CU Microchip Technology 1: £7.47 184Expected 11/03/2027	Mfr. Part No. ATSAM3U4EA-CU Mouser Part No 556-ATSAM3U4EA-CU	Microchip Technology	ARM Microcontrollers - MCU 256K Flash, 52K SRAM 32-bit ARM Cortex M3 Learn More about Microchip Technology microchip sam3u mcus	Datasheet	184Expected 11/03/2027	£7.47 £6.78 £6.15	Min.: 1 Mult.: 1	SMD/SMT	LFBGA-144	ARM Cortex M3	32 bit	96 MHz	256 kB	52 kB	12 bit	96 I/O	1.62 V	1.95 V	+ 85 C	Tray