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ARM Cortex M3 Core ARM Microcontrollers - MCU

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) Filter the results in the table by unit price based on your quantity.	Qty.	Series	Mounting Style	Package/Case	Core	Program Memory Size	Data Bus Width	ADC Resolution	Maximum Clock Frequency	Number of I/Os	Data RAM Size	Supply Voltage - Min	Supply Voltage - Max	Minimum Operating Temperature	Maximum Operating Temperature	Packaging
ARM Microcontrollers - MCU Mainstream Performance line, Arm Cortex-M3 MCU 1 Mbyte of Flash 72 MHz CPU, moto STM32F103RGT6TR STMicroelectronics 1: $15.72 2,000In Stock 2,000Expected 2026/11/28	Mfr. Part No. STM32F103RGT6TR Mouser Part No 511-STM32F103RGT6TR	STMicroelectronics	ARM Microcontrollers - MCU Mainstream Performance line, Arm Cortex-M3 MCU 1 Mbyte of Flash 72 MHz CPU, moto Learn More about STMicroelectronics stm32f1	Datasheet	2,000In Stock 2,000Expected 2026/11/28	Cut Tape $15.72 $12.34 $11.25 $10.57 View Reel $8.83 $10.37 $9.77 $8.83 Quote MouseReel Available	Min.: 1 Mult.: 1 : 1,000	STM32F103RG	SMD/SMT	LQFP-64	ARM Cortex M3	1 MB	32 bit	12 bit	72 MHz	112 I/O	96 kB	2 V	3.6 V	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU 32BIT Cortex M3 M/D Performance LINE STM32F103CBT7 STMicroelectronics 1: $8.83 7,884In Stock	Mfr. Part No. STM32F103CBT7 Mouser Part No 511-STM32F103CBT7	STMicroelectronics	ARM Microcontrollers - MCU 32BIT Cortex M3 M/D Performance LINE Learn More about STMicroelectronics stm32f1	Datasheet	7,884In Stock	$8.83 $6.83 $6.02 $5.77 View $5.51 $5.35 $5.23 $5.07	Min.: 1 Mult.: 1	STM32F103CB	SMD/SMT	LQFP-48	ARM Cortex M3	128 kB	32 bit	12 bit	72 MHz	37 I/O	20 kB	2 V	3.6 V	- 40 C	+ 105 C	Tray
ARM Microcontrollers - MCU 32BIT Cortex 64/25 CONNECTIVITY LINE M3 STM32F105RCT6 STMicroelectronics 1: $8.55 12,315In Stock	Mfr. Part No. STM32F105RCT6 Mouser Part No 511-STM32F105RCT6	STMicroelectronics	ARM Microcontrollers - MCU 32BIT Cortex 64/25 CONNECTIVITY LINE M3 Learn More about STMicroelectronics stm32f105	Datasheet	12,315In Stock	$8.55 $6.86 $6.45 $5.97 View $5.85 $5.61 $5.33	Min.: 1 Mult.: 1	STM32F105RC	SMD/SMT	LQFP-64	ARM Cortex M3	256 kB	32 bit	12 bit	72 MHz	51 I/O	64 kB	2 V	3.6 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU 32BIT Cortex 64/25 CONNECTIVITY LINE M3 STM32F105VCT6 STMicroelectronics 1: $9.47 15,963In Stock	Mfr. Part No. STM32F105VCT6 Mouser Part No 511-STM32F105VCT6	STMicroelectronics	ARM Microcontrollers - MCU 32BIT Cortex 64/25 CONNECTIVITY LINE M3 Learn More about STMicroelectronics stm32f105	Datasheet	15,963In Stock	$9.47 $7.68 $7.18 $6.68 View $6.56 $6.32 $5.92 Quote	Min.: 1 Mult.: 1	STM32F105VC	SMD/SMT	LQFP-100	ARM Cortex M3	256 kB	32 bit	12 bit	72 MHz	80 I/O	64 kB	2 V	3.6 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU Hi-perf ARM Cortex M3 MCU 1 Mb STM32F205RGT7 STMicroelectronics 1: $13.92 3,972In Stock	Mfr. Part No. STM32F205RGT7 Mouser Part No 511-STM32F205RGT7	STMicroelectronics	ARM Microcontrollers - MCU Hi-perf ARM Cortex M3 MCU 1 Mb Learn More about STMicroelectronics stm32f2	Datasheet	3,972In Stock	$13.92 $11.49 $10.72 $10.18 View $10.03 $9.72 $9.69	Min.: 1 Mult.: 1	STM32F205RG	SMD/SMT	LQFP-64	ARM Cortex M3	1 MB	32 bit	12 bit	120 MHz	51 I/O	128 kB	1.8 V	3.6 V	- 40 C	+ 105 C	Tray
ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M3 MCU 256 Kbytes of Flash 32 MHz CPU, USB, 2xOp-amp STM32L151CCU6 STMicroelectronics 1: $6.40 4,110In Stock	Mfr. Part No. STM32L151CCU6 Mouser Part No 511-STM32L151CCU6	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	4,110In Stock	$6.40 $5.18 $4.88 $4.55 View $4.40 $4.36 $4.35	Min.: 1 Mult.: 1	STM32L151CC	SMD/SMT	UFQPFN-48	ARM Cortex M3	256 kB	32 bit	12 bit	32 MHz	37 I/O	32 kB	1.65 V	3.6 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU 32BIT Cortex M3 L/D Performance LINE STM32F103ZET7 STMicroelectronics 1: $16.19 1,574In Stock	Mfr. Part No. STM32F103ZET7 Mouser Part No 511-STM32F103ZET7	STMicroelectronics	ARM Microcontrollers - MCU 32BIT Cortex M3 L/D Performance LINE Learn More about STMicroelectronics stm32f1	Datasheet	1,574In Stock	$16.19 $12.78 $11.29 $10.90 View $9.80 $9.56	Min.: 1 Mult.: 1	STM32F103ZE	SMD/SMT	LQFP-144	ARM Cortex M3	512 kB	32 bit	12 bit	72 MHz	112 I/O	64 kB	2 V	3.6 V	- 40 C	+ 105 C	Tray
ARM Microcontrollers - MCU 32-Bit Cortex 64Kb Performance Line STM32F103VET6TR STMicroelectronics 1: $11.03 11,997In Stock	Mfr. Part No. STM32F103VET6TR Mouser Part No 511-STM32F103VET6TR	STMicroelectronics	ARM Microcontrollers - MCU 32-Bit Cortex 64Kb Performance Line Learn More about STMicroelectronics stm32f1	Datasheet	11,997In Stock	Cut Tape $11.03 $9.29 $8.63 $8.30 View Reel $7.11 $8.20 $7.90 $7.11 Quote MouseReel Available	Min.: 1 Mult.: 1 : 1,000	STM32F103VE	SMD/SMT	LQFP-100	ARM Cortex M3	512 kB	32 bit	12 bit	72 MHz	80 I/O	64 kB	2 V	3.6 V	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU 32BIT ARM Cortex M3 Connectivity 1024kB STM32F205RGT6 STMicroelectronics 1: $16.08 2,592In Stock	Mfr. Part No. STM32F205RGT6 Mouser Part No 511-STM32F205RGT6	STMicroelectronics	ARM Microcontrollers - MCU 32BIT ARM Cortex M3 Connectivity 1024kB Learn More about STMicroelectronics stm32f2	Datasheet	2,592In Stock	$16.08 $12.69 $11.33 $10.68 View $10.62 $10.12 $10.03	Min.: 1 Mult.: 1	STM32F205RG	SMD/SMT	LQFP-64	ARM Cortex M3	1 MB	32 bit	12 bit	120 MHz	51 I/O	128 kB	1.8 V	3.6 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU Ultra-low-power Arm Cortex-M3 MCU 32 Kbytes of Flash , 32 MHz CPU, USB STM32L151C6T6A STMicroelectronics 1: $5.47 12,803In Stock	Mfr. Part No. STM32L151C6T6A Mouser Part No 511-STM32L151C6T6A	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	12,803In Stock	$5.47 $4.18 $3.64 $3.48 View $3.31 $3.20 $2.81 $2.61 $2.54	Min.: 1 Mult.: 1	STM32L151C6-A	SMD/SMT	LQFP-48	ARM Cortex M3	32 kB	32 bit	12 bit	32 MHz	37 I/O	10 kB	1.65 V	3.6 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU MM-LEGACY PSOC135 CY8C5266FNI-LP205T Infineon Technologies 1: $15.65 698In Stock	Mfr. Part No. CY8C5266FNI-LP205T Mouser Part No 727-CY8C5266FNLP205T	Infineon Technologies	ARM Microcontrollers - MCU MM-LEGACY PSOC135 Learn More about Infineon Technologies cypress psoc 5lp socs	Datasheet	698In Stock	Cut Tape $15.65 $11.90 $11.40 $10.05 View Reel $8.59 $9.59 $9.23 $8.59 Quote	Min.: 1 Mult.: 1 : 2,000	CY8C5266	SMD/SMT	WLCSP-99	ARM Cortex M3	64 kB	32 bit	12 bit	80 MHz	62 I/O	16 kB	1.71 V	5.5 V	- 40 C	+ 85 C	Reel, Cut Tape
ARM Microcontrollers - MCU MM-LEGACY MM CY9BF618TPMC-GK7E1 Infineon Technologies 1: $18.90 280In Stock	Mfr. Part No. CY9BF618TPMC-GK7E1 Mouser Part No 727-C9BF618TPMCGK7E1	Infineon Technologies	ARM Microcontrollers - MCU MM-LEGACY MM	Datasheet	280In Stock	$18.90 $15.26 $14.63 $12.90 View $12.30 $11.68 $11.41 Quote	Min.: 1 Mult.: 1	MB9B610T	SMD/SMT	LQFP-176	ARM Cortex M3	1 MB	32 bit	12 bit	144 MHz	154 I/O	128 kB	2.7 V	5.5 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU 256KB Flash 64KBSRAM PSoC 5LP CY8C5288LTI-LP090 Infineon Technologies 1: $14.80 253In Stock 520Expected 2026/11/20	Mfr. Part No. CY8C5288LTI-LP090 Mouser Part No 727-CY8C5288LTILP090	Infineon Technologies	ARM Microcontrollers - MCU 256KB Flash 64KBSRAM PSoC 5LP Learn More about Infineon Technologies cypress psoc5lp	Datasheet	253In Stock 520Expected 2026/11/20	$14.80 $11.68 $10.42 $10.04 View $9.61 $9.15 $8.93 Quote	Min.: 1 Mult.: 1	CY8C52LPxxx	SMD/SMT	QFN-68	ARM Cortex M3	256 kB	32 bit	12 bit	80 MHz	38 I/O	64 kB	1.71 V	1.89 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU LQFP, Grn, IT, MRL B ATSAM3U1CB-AU Microchip Technology 1: $4.40 348In Stock	Mfr. Part No. ATSAM3U1CB-AU Mouser Part No 556-ATSAM3U1CB-AU	Microchip Technology	ARM Microcontrollers - MCU LQFP, Grn, IT, MRL B Learn More about Microchip Technology microchip sam3u mcus	Datasheet	348In Stock	$4.40 $4.00 $3.99 $3.77	Min.: 1 Mult.: 1	SAM3U	SMD/SMT	LQFP-100	ARM Cortex M3	64 kB	32 bit	12 bit	96 MHz	57 I/O	20 kB	1.62 V	1.95 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU Leopard Gecko MCU IC 256KB EFM32LG842F256G-F-QFP64R Silicon Labs 1: $11.82 3,787In Stock	Mfr. Part No. EFM32LG842F256G-F-QFP64R Mouser Part No 634-32LG842256GFQFPR	Silicon Labs	ARM Microcontrollers - MCU Leopard Gecko MCU IC 256KB Learn More about Silicon Labs energymicro efm32leopard	Datasheet	3,787In Stock	Cut Tape $11.82 $9.26 $8.61 $7.90 Reel $7.20 View $7.83 $7.37 $6.83	Min.: 1 Mult.: 1 : 1,000	EFM32LG	SMD/SMT	TQFP-64	ARM Cortex M3	256 kB	32 bit	12 bit	48 MHz	53 I/O	32 kB	1.98 V	3.8 V	- 40 C	+ 85 C	Reel, Cut Tape
ARM Microcontrollers - MCU 5.50 V, PSoC 5 CapSense Plus CY8C5667AXI-LP006 Infineon Technologies 1: $20.69 1,775In Stock	Mfr. Part No. CY8C5667AXI-LP006 Mouser Part No 727-CY8C5667AXILP006	Infineon Technologies	ARM Microcontrollers - MCU 5.50 V, PSoC 5 CapSense Plus Learn More about Infineon Technologies cypress psoc5lp	Datasheet	1,775In Stock	$20.69 $16.49 $14.36 $13.86 View $12.43 $12.37 $12.36 Quote	Min.: 1 Mult.: 1	CY8C56LPxxx	SMD/SMT	TQFP-100	ARM Cortex M3	128 kB	32 bit	12 bit	67 MHz	62 I/O	32 kB	1.71 V	1.89 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU 32-Bit Arm Cortex M3 128kb UltralowPower STM32L151CBT6 STMicroelectronics 1: $8.32 10,299In Stock NRND	Mfr. Part No. STM32L151CBT6 Mouser Part No 511-STM32L151CBT6 NRND	STMicroelectronics	ARM Microcontrollers - MCU 32-Bit Arm Cortex M3 128kb UltralowPower Learn More about STMicroelectronics stm32l1	Datasheet	10,299In Stock	$8.32 $6.42 $5.66 $5.42 View $5.18 $5.02 $4.57 $4.47 Quote	Min.: 1 Mult.: 1	STM32L151CB	SMD/SMT		ARM Cortex M3	128 kB	32 bit	12 bit	32 MHz	37 I/O	16 kB	1.8 V	3.6 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU BGA100,GREEN IND TEMP, MRLA ATSAM3X8CA-CU Microchip Technology 1: $11.92 256In Stock	Mfr. Part No. ATSAM3X8CA-CU Mouser Part No 556-ATSAM3X8CA-CU	Microchip Technology	ARM Microcontrollers - MCU BGA100,GREEN IND TEMP, MRLA Learn More about Microchip Technology microchip sam3x mcu	Datasheet	256In Stock	$11.92 $10.83 $9.82 $9.80	Min.: 1 Mult.: 1	SAM3X	SMD/SMT	LFBGA-100	ARM Cortex M3	512 kB	32 bit	12 bit	84 MHz	63 I/O	96 kB	1.62 V	1.95 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU 128k Flash, 16k RAM, AES EFM32G232F128G-E-QFP64R Silicon Labs 1: $7.87 549In Stock	Mfr. Part No. EFM32G232F128G-E-QFP64R Mouser Part No 634-32G232128GEFP64R	Silicon Labs	ARM Microcontrollers - MCU 128k Flash, 16k RAM, AES	Datasheet	549In Stock	Cut Tape $7.87 $6.21 $5.71 $5.25 $5.11 Reel $4.47	Min.: 1 Mult.: 1 : 1,000		SMD/SMT	TQFP-64	ARM Cortex M3	128 kB	32 bit	12 bit	32 MHz	53 I/O	16 kB	1.98 V	3.8 V	- 40 C	+ 85 C	Reel, Cut Tape
ARM Microcontrollers - MCU 512k Flash, 128k RAM, USB, AES EFM32GG380F512G-E-QFP100R Silicon Labs 1: $16.76 2,100In Stock	Mfr. Part No. EFM32GG380F512G-E-QFP100R Mouser Part No 634-32GG380F512-E-T	Silicon Labs	ARM Microcontrollers - MCU 512k Flash, 128k RAM, USB, AES Learn More about Silicon Labs energymicro efm32giant	Datasheet	2,100In Stock	Cut Tape $16.76 $13.33 $12.13 $11.36 View Reel $9.83 $11.28 $10.62 $9.83	Min.: 1 Mult.: 1 : 1,000	EFM32GG	SMD/SMT	LQFP-100	ARM Cortex M3	512 kB	32 bit	12 bit	48 MHz	81 I/O	128 kB	1.98 V	3.8 V	- 40 C	+ 85 C	Reel, Cut Tape
ARM Microcontrollers - MCU PSOC 5LP ANALOG LITE, 256K FLASH CY8C5468LTI-LP026 Infineon Technologies 1: $14.57 1,371In Stock	Mfr. Part No. CY8C5468LTI-LP026 Mouser Part No 727-CY8C5468LTILP026	Infineon Technologies	ARM Microcontrollers - MCU PSOC 5LP ANALOG LITE, 256K FLASH Learn More about Infineon Technologies cypress psoc5lp	Datasheet	1,371In Stock	$14.57 $11.48 $10.26 $9.86 View $9.44 $9.07 $8.77	Min.: 1 Mult.: 1	CY8C54LPxxx	SMD/SMT	QFN-68	ARM Cortex M3	256 kB	32 bit	12 bit	67 MHz	48 I/O	64 kB	1.71 V	1.89 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU PSOC 5LP PERFO ANLOG 67MHZ, 64K CY8C5666AXI-LP004 Infineon Technologies 1: $18.74 623In Stock	Mfr. Part No. CY8C5666AXI-LP004 Mouser Part No 727-CY8C5666AXILP004	Infineon Technologies	ARM Microcontrollers - MCU PSOC 5LP PERFO ANLOG 67MHZ, 64K Learn More about Infineon Technologies cypress psoc5lp	Datasheet	623In Stock	$18.74 $14.89 $12.93 $12.54 View $12.51 $11.40 $11.37 Quote	Min.: 1 Mult.: 1	CY8C56LPxxx	SMD/SMT	TQFP-100	ARM Cortex M3	64 kB	32 bit	12 bit	67 MHz	72 I/O	16 kB	1.71 V	1.89 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU QFP100,GREEN IND TEMP, MRL A ATSAM3A4CA-AU Microchip Technology 1: $10.82 334In Stock	Mfr. Part No. ATSAM3A4CA-AU Mouser Part No 556-ATSAM3A4CA-AU	Microchip Technology	ARM Microcontrollers - MCU QFP100,GREEN IND TEMP, MRL A Learn More about Microchip Technology microchip sam3a mcu	Datasheet	334In Stock	$10.82 $10.54 $9.90 $9.87 $9.26	Min.: 1 Mult.: 1	SAM3A	SMD/SMT	LQFP-100	ARM Cortex M3	256 kB	32 bit	12 bit	84 MHz	63 I/O	64 kB	1.62 V	1.95 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU LQFP,Green,IND TEMP,MRL B ATSAM3S1BB-AU Microchip Technology 1: $3.85 Non-Stocked Lead-Time 12 Weeks	Mfr. Part No. ATSAM3S1BB-AU Mouser Part No 556-ATSAM3S1BB-AU	Microchip Technology	ARM Microcontrollers - MCU LQFP,Green,IND TEMP,MRL B Learn More about Microchip Technology microchip sam3s mcu	Datasheet	Non-Stocked Lead-Time 12 Weeks	$3.85 $3.54 $3.19	Min.: 1 Mult.: 1	SAM3S	SMD/SMT	QFP-64	ARM Cortex M3	64 kB	32 bit	12 bit	64 MHz	47 I/O	16 kB	1.62 V	1.9 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU Leopard Gecko MCU IC 128KB EFM32LG230F128G-F-QFN64R Silicon Labs 1: $9.90 2,650In Stock	Mfr. Part No. EFM32LG230F128G-F-QFN64R Mouser Part No 634-32LG230F128GFQFR	Silicon Labs	ARM Microcontrollers - MCU Leopard Gecko MCU IC 128KB Learn More about Silicon Labs energymicro efm32leopard	Datasheet	2,650In Stock	Cut Tape $9.90 $7.69 $7.14 $6.54 View Reel $5.61 $6.20 $6.08 $5.94 $5.61	Min.: 1 Mult.: 1 : 3,000	EFM32LG	SMD/SMT	QFN-64	ARM Cortex M3	128 kB	32 bit	12 bit	48 MHz	56 I/O	32 kB	1.98 V	3.8 V	- 40 C	+ 85 C	Reel, Cut Tape