ARM Microcontrollers - MCU

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SAM3 Cortex-M3 Microcontrollers

Microchip Technology SAM3 Cortex®-M3 Flash Microcontrollers combine high-speed USB and an integrated transceiver for fast up/downloading of data, robust EMI tolerance, and plug-and-play high-speed serial interconnectivity. Microchip SAM3 MCUs feature a 96MHz maximum operating frequency and a high data-bandwidth architecture based on a 5-layer bus matrix with 22 DMA channels and distributed memory. The SAM3 is touch-ready and offers native support for Microchip QTouch® technology for easy implementation of buttons, sliders, and wheels in your application. These Microchip MCUs are ideal for applications with intensive communications requirements, including high-speed gateways in industrial, medical, data processing, and consumer applications.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (PEN) 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 128K Flash, 36K SRAM 32-bit ARM Cortex M3 ATSAM3U2CA-CU Microchip Technology 1: S/ 23.67 4,474In Stock	Mfr. Part # ATSAM3U2CA-CU Mouser Part # 556-ATSAM3U2CA-CU	Microchip Technology	ARM Microcontrollers - MCU 128K Flash, 36K SRAM 32-bit ARM Cortex M3 Learn More about Microchip Technology microchip sam3u mcus	Datasheet	4,474In Stock	S/ 23.67 S/ 23.63 S/ 22.54 S/ 22.07 S/ 21.91	Min.: 1 Mult.: 1	SAM3U	SMD/SMT	TFBGA-100	ARM Cortex M3	128 kB	32 bit	12 bit	96 MHz	57 I/O	36 kB	1.62 V	1.95 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU QFP100,GREEN IND TEMP, MRLA ATSAM3X8CA-AU Microchip Technology 1: S/ 43.79 1,601In Stock	Mfr. Part # ATSAM3X8CA-AU Mouser Part # 556-ATSAM3X8CA-AU	Microchip Technology	ARM Microcontrollers - MCU QFP100,GREEN IND TEMP, MRLA Learn More about Microchip Technology microchip sam3x mcu	Datasheet	1,601In Stock	S/ 43.79 S/ 39.90 S/ 39.43 S/ 36.08	Min.: 1 Mult.: 1	SAM3X	SMD/SMT	LQFP-100	ARM Cortex M3	512 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 QFP144,GREEN IND TEMP, MRL A ATSAM3X4EA-AU Microchip Technology 1: S/ 51.19 1,227In Stock	Mfr. Part # ATSAM3X4EA-AU Mouser Part # 556-ATSAM3X4EA-AU	Microchip Technology	ARM Microcontrollers - MCU QFP144,GREEN IND TEMP, MRL A Learn More about Microchip Technology microchip sam3x mcu	Datasheet	1,227In Stock	S/ 51.19 S/ 46.55 S/ 42.12 S/ 42.00	Min.: 1 Mult.: 1	SAM3X	SMD/SMT	LQFP-144	ARM Cortex M3	256 kB	32 bit	12 bit	84 MHz	103 I/O	64 kB	1.62 V	1.95 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU BGA100,GREEN IND TEMP, MRLA ATSAM3X8CA-CU Microchip Technology 1: S/ 46.40 256In Stock	Mfr. Part # ATSAM3X8CA-CU Mouser Part # 556-ATSAM3X8CA-CU	Microchip Technology	ARM Microcontrollers - MCU BGA100,GREEN IND TEMP, MRLA Learn More about Microchip Technology microchip sam3x mcu	Datasheet	256In Stock	S/ 46.40 S/ 42.16 S/ 38.19 S/ 38.15	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 QFP100,GREEN IND TEMP, MRL A ATSAM3A4CA-AU Microchip Technology 1: S/ 42.08 334In Stock	Mfr. Part # ATSAM3A4CA-AU Mouser Part # 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	S/ 42.08 S/ 40.99 S/ 38.54 S/ 38.42 S/ 35.77	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, Grn, IT, MRL B ATSAM3U1CB-AU Microchip Technology 1: S/ 17.13 348In Stock	Mfr. Part # ATSAM3U1CB-AU Mouser Part # 556-ATSAM3U1CB-AU	Microchip Technology	ARM Microcontrollers - MCU LQFP, Grn, IT, MRL B Learn More about Microchip Technology microchip sam3u mcus	Datasheet	348In Stock	S/ 17.13 S/ 15.57 S/ 15.53 S/ 14.09	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 LQFP,Grn,IT,MRL A ATSAM3N0CA-AU Microchip Technology 1: S/ 15.41 243In Stock	Mfr. Part # ATSAM3N0CA-AU Mouser Part # 556-ATSAM3N0CA-AU	Microchip Technology	ARM Microcontrollers - MCU LQFP,Grn,IT,MRL A Learn More about Microchip Technology microchip sam3n mcu	Datasheet	243In Stock	S/ 15.41 S/ 13.97 S/ 12.69	Min.: 1 Mult.: 1	SAM3N	SMD/SMT	LQFP-100	ARM Cortex M3	32 kB	32 bit	10 bit	48 MHz	79 I/O	8 kB	1.8 V	3.6 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU QFN,Grn, IT, MRL B ATSAM3N1AB-MU Microchip Technology 1: S/ 13.51 276In Stock	Mfr. Part # ATSAM3N1AB-MU Mouser Part # 556-ATSAM3N1AB-MU	Microchip Technology	ARM Microcontrollers - MCU QFN,Grn, IT, MRL B Learn More about Microchip Technology microchip sam3n mcu	Datasheet	276In Stock	S/ 13.51 S/ 12.22 S/ 11.21 S/ 11.17	Min.: 1 Mult.: 1	SAM3N	SMD/SMT	QFN-48	ARM Cortex M3	64 kB	32 bit	10 bit	48 MHz	32 I/O	4 kB	1.62 V	1.95 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU BGA, Grn, IT, MRL A ATSAM3N0CA-CU Microchip Technology 1: S/ 17.52 447In Stock	Mfr. Part # ATSAM3N0CA-CU Mouser Part # 556-ATSAM3N0CA-CU	Microchip Technology	ARM Microcontrollers - MCU BGA, Grn, IT, MRL A Learn More about Microchip Technology microchip sam3n mcu	Datasheet	447In Stock	S/ 17.52 S/ 15.88 S/ 14.44	Min.: 1 Mult.: 1	SAM3N	SMD/SMT	TFBGA-100	ARM Cortex M3	32 kB	32 bit	10 bit	48 MHz	79 I/O	4 kB	1.62 V	1.95 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU LQFP, Grn, IT, MRL B ATSAM3N1BB-AU Microchip Technology 1: S/ 13.97 320In Stock	Mfr. Part # ATSAM3N1BB-AU Mouser Part # 556-ATSAM3N1BB-AU	Microchip Technology	ARM Microcontrollers - MCU LQFP, Grn, IT, MRL B Learn More about Microchip Technology microchip sam3n mcu	Datasheet	320In Stock	S/ 13.97 S/ 12.73 S/ 11.52	Min.: 1 Mult.: 1	SAM3N	SMD/SMT	LQFP-64	ARM Cortex M3	64 kB	32 bit	10 bit	48 MHz	47 I/O	4 kB	1.62 V	1.95 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU LQFP, Grn, IT, MRL a ATSAM3N0BA-AU Microchip Technology 1: S/ 13.97 5In Stock	Mfr. Part # ATSAM3N0BA-AU Mouser Part # 556-ATSAM3N0BA-AU	Microchip Technology	ARM Microcontrollers - MCU LQFP, Grn, IT, MRL a Learn More about Microchip Technology microchip sam3n mcu	Datasheet	5In Stock	S/ 13.97 S/ 12.73 S/ 11.52	Min.: 1 Mult.: 1	SAM3N	SMD/SMT	LQFP-64	ARM Cortex M3	32 kB	32 bit	10 bit	48 MHz	47 I/O	8 kB	1.8 V	3.6 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU MRL A 256K Flash 48K SRAM Ind Temp ATSAM3S4CA-CU Microchip Technology 1: S/ 29.12 693In Stock	Mfr. Part # ATSAM3S4CA-CU Mouser Part # 556-ATSAM3S4CA-CU	Microchip Technology	ARM Microcontrollers - MCU MRL A 256K Flash 48K SRAM Ind Temp Learn More about Microchip Technology microchip sam3s mcu	Datasheet	693In Stock	S/ 29.12 S/ 26.43 S/ 24.68 S/ 24.64	Min.: 1 Mult.: 1	SAM3S	SMD/SMT	TFBGA-100	ARM Cortex M3	256 kB	32 bit	12 bit	64 MHz	79 I/O	48 kB	1.62 V	1.9 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU 128K Flash, 36K SRAM 32-bit ARM Cortex M3 ATSAM3U2CA-AU Microchip Technology 1: S/ 24.37 287In Stock	Mfr. Part # ATSAM3U2CA-AU Mouser Part # 556-ATSAM3U2CA-AU	Microchip Technology	ARM Microcontrollers - MCU 128K Flash, 36K SRAM 32-bit ARM Cortex M3 Learn More about Microchip Technology microchip sam3u mcus	Datasheet	287In Stock	S/ 24.37 S/ 22.15 S/ 20.12	Min.: 1 Mult.: 1	SAM3U	SMD/SMT	LQFP-100	ARM Cortex M3	128 kB	32 bit	12 bit	96 MHz	57 I/O	36 kB	1.62 V	1.95 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU 256K Flash, 52K SRAM 32-bit ARM Cortex M3 ATSAM3U4EA-AU Microchip Technology 1: S/ 35.85 1,650In Stock	Mfr. Part # ATSAM3U4EA-AU Mouser Part # 556-ATSAM3U4EA-AU	Microchip Technology	ARM Microcontrollers - MCU 256K Flash, 52K SRAM 32-bit ARM Cortex M3 Learn More about Microchip Technology microchip sam3u mcus	Datasheet	1,650In Stock	S/ 35.85 S/ 32.66 S/ 29.54	Min.: 1 Mult.: 1	SAM3U	SMD/SMT	LQFP-144	ARM Cortex M3	256 kB	32 bit	12 bit	96 MHz	96 I/O	52 kB	1.62 V	1.95 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU QFP100,GREEN IND TEMP, MRL A ATSAM3X4CA-AU Microchip Technology 1: S/ 42.82 160In Stock	Mfr. Part # ATSAM3X4CA-AU Mouser Part # 556-ATSAM3X4CA-AU	Microchip Technology	ARM Microcontrollers - MCU QFP100,GREEN IND TEMP, MRL A Learn More about Microchip Technology microchip sam3x mcu	Datasheet	160In Stock	S/ 42.82 S/ 38.96 S/ 35.23	Min.: 1 Mult.: 1	SAM3X	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 LQFP144,GREEN IND TEMP, MRLA ATSAM3X8EA-AU Microchip Technology 1: S/ 51.19 427In Stock 600Expected 10/27/2026	Mfr. Part # ATSAM3X8EA-AU Mouser Part # 556-ATSAM3X8EA-AU	Microchip Technology	ARM Microcontrollers - MCU LQFP144,GREEN IND TEMP, MRLA Learn More about Microchip Technology microchip sam3x mcu	Datasheet	427In Stock 600Expected 10/27/2026	S/ 51.19 S/ 46.55 S/ 42.16	Min.: 1 Mult.: 1	SAM3X	SMD/SMT	LQFP-144	ARM Cortex M3	512 kB	32 bit	12 bit	84 MHz	103 I/O	96 kB	1.62 V	1.95 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU BGA144,GREEN IND TEMP, MRLA ATSAM3X8EA-CU Microchip Technology 1: S/ 50.02 920In Stock	Mfr. Part # ATSAM3X8EA-CU Mouser Part # 556-ATSAM3X8EA-CU	Microchip Technology	ARM Microcontrollers - MCU BGA144,GREEN IND TEMP, MRLA Learn More about Microchip Technology microchip sam3x mcu	Datasheet	920In Stock	S/ 50.02 S/ 45.50 S/ 41.22	Min.: 1 Mult.: 1	SAM3X	SMD/SMT	LFBGA-144	ARM Cortex M3	512 kB	32 bit	12 bit	84 MHz	103 I/O	96 kB	1.62 V	1.95 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU MRL A 256K Flash 48K SRAM Ind Temp ATSAM3S4BA-AU Microchip Technology 1: S/ 25.46 1,556In Stock	Mfr. Part # ATSAM3S4BA-AU Mouser Part # 556-ATSAM3S4BA-AU	Microchip Technology	ARM Microcontrollers - MCU MRL A 256K Flash 48K SRAM Ind Temp Learn More about Microchip Technology microchip sam3s mcu	Datasheet	1,556In Stock	S/ 25.46 S/ 23.08 S/ 20.98	Min.: 1 Mult.: 1	SAM3S	SMD/SMT	QFP-64	ARM Cortex M3	256 kB	32 bit	12 bit	64 MHz	47 I/O	48 kB	1.62 V	1.9 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU LQFP,Grn, IT, MRL A ATSAM3S8CA-AU Microchip Technology 1: S/ 31.92 8In Stock	Mfr. Part # ATSAM3S8CA-AU Mouser Part # 556-ATSAM3S8CA-AU	Microchip Technology	ARM Microcontrollers - MCU LQFP,Grn, IT, MRL A Learn More about Microchip Technology microchip sam3s mcu	Datasheet	8In Stock	S/ 31.92 S/ 29.04 S/ 26.35	Min.: 1 Mult.: 1	SAM3S	SMD/SMT	QFP-100	ARM Cortex M3	512 kB	32 bit	12 bit	64 MHz	79 I/O	64 kB	1.62 V	1.9 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU LQFP,Grn, IT, MRL A ATSAM3SD8BA-AU Microchip Technology 1: S/ 33.16 5In Stock	Mfr. Part # ATSAM3SD8BA-AU Mouser Part # 556-ATSAM3SD8BA-AU	Microchip Technology	ARM Microcontrollers - MCU LQFP,Grn, IT, MRL A Learn More about Microchip Technology microchip sam3s mcu	Datasheet	5In Stock	S/ 33.16 S/ 30.17 S/ 27.29	Min.: 1 Mult.: 1	SAM3S	SMD/SMT	QFP-64	ARM Cortex M3	512 kB	32 bit	12 bit	64 MHz	47 I/O	64 kB	1.62 V	1.9 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU LQFP,Grn, IT, MRL A ATSAM3SD8CA-AU Microchip Technology 1: S/ 35.11 80In Stock	Mfr. Part # ATSAM3SD8CA-AU Mouser Part # 556-ATSAM3SD8CA-AU	Microchip Technology	ARM Microcontrollers - MCU LQFP,Grn, IT, MRL A Learn More about Microchip Technology microchip sam3s mcu	Datasheet	80In Stock	S/ 35.11 S/ 33.90	Min.: 1 Mult.: 1	SAM3S	SMD/SMT	QFP-100	ARM Cortex M3	512 kB	32 bit	12 bit	64 MHz	79 I/O	64 kB	1.62 V	1.9 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU 128K Flash, 36K SRAM 32-bit ARM Cortex M3 ATSAM3U2EA-AU Microchip Technology 1: S/ 31.41 57In Stock	Mfr. Part # ATSAM3U2EA-AU Mouser Part # 556-ATSAM3U2EA-AU	Microchip Technology	ARM Microcontrollers - MCU 128K Flash, 36K SRAM 32-bit ARM Cortex M3 Learn More about Microchip Technology microchip sam3u mcus	Datasheet	57In Stock	S/ 31.41 S/ 28.57 S/ 25.89	Min.: 1 Mult.: 1	SAM3U	SMD/SMT	LQFP-144	ARM Cortex M3	128 kB	32 bit	12 bit	96 MHz	96 I/O	36 kB	1.62 V	1.95 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU LQFP, Green, IND TEMP, MRL A ATSAM3N00BA-AU Microchip Technology 1: S/ 13.97 342In Stock	Mfr. Part # ATSAM3N00BA-AU Mouser Part # 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	S/ 13.97 S/ 12.73 S/ 11.52	Min.: 1 Mult.: 1	SAM3N	SMD/SMT	LQFP-64	ARM Cortex M3	16 kB	32 bit	10 bit	48 MHz	47 I/O	4 kB	1.8 V	3.6 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU LQFP, Grn, IT, MRL a ATSAM3N0AA-AU Microchip Technology 1: S/ 12.73 126In Stock	Mfr. Part # ATSAM3N0AA-AU Mouser Part # 556-ATSAM3N0AA-AU	Microchip Technology	ARM Microcontrollers - MCU LQFP, Grn, IT, MRL a Learn More about Microchip Technology microchip sam3n mcu	Datasheet	126In Stock	S/ 12.73 S/ 11.60 S/ 10.51	Min.: 1 Mult.: 1	SAM3N	SMD/SMT	LQFP-48	ARM Cortex M3	32 kB	32 bit	10 bit	48 MHz	34 I/O	8 kB	1.8 V	3.6 V	- 40 C	+ 85 C	Tray
ARM Microcontrollers - MCU LQFP, Grn, IT, MRL B ATSAM3N1AB-AU Microchip Technology 1: S/ 12.73 108In Stock	Mfr. Part # ATSAM3N1AB-AU Mouser Part # 556-ATSAM3N1AB-AU	Microchip Technology	ARM Microcontrollers - MCU LQFP, Grn, IT, MRL B Learn More about Microchip Technology microchip sam3n mcu	Datasheet	108In Stock	S/ 12.73 S/ 11.60 S/ 10.51	Min.: 1 Mult.: 1	SAM3N	SMD/SMT	LQFP-48	ARM Cortex M3	64 kB	32 bit	10 bit	48 MHz	32 I/O	4 kB	1.62 V	1.95 V	- 40 C	+ 85 C	Tray

SAM3 Cortex-M3 Microcontrollers

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