ARM Microcontrollers - MCU

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SAM L21 Microcontrollers

Microchip Technology SAM L21 are ultralow-power microcontrollers (MCU) using the 32-bit ARM® Cortex®-M0+ processor. The processor runs at max. 48MHz (2.46 CoreMark®/MHz) and up to 256KB Flash and 40KB of SRAM. The MCUs are housed in 32-, 48-, and 64-pin package. The SAM L21 feature sophisticated power management technologies, like power domain gating, SleepWalking, ultralow-power peripherals and more that allow for very low current consumption. The highly configurable peripherals include a touch controller supporting capacitive interfaces with proximity sensing.

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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 ARM Cortex-M0+ 256KBFlash 40KB SRAM ATSAML21J17B-MUT Microchip Technology 1: $6.12 5,700In Stock	Mfr. Part # ATSAML21J17B-MUT Mouser Part # 556-ATSAML21J17B-MUT	Microchip Technology	ARM Microcontrollers - MCU ARM Cortex-M0+ 256KBFlash 40KB SRAM Learn More about Microchip Technology microchip sam l21 mcus	Datasheet	5,700In Stock	Cut Tape $6.12 $5.93 Reel $5.06 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	SAML21	SMD/SMT	VQFN-64	ARM Cortex M0+	128 kB	32 bit	12 bit	48 MHz	51 I/O	16 kB	1.62 V	3.63 V	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU ARM Cortex-M0+ 64KB flash 12kb SRAM ATSAML21E17B-MUT Microchip Technology 1: $5.55 8,498In Stock	Mfr. Part # ATSAML21E17B-MUT Mouser Part # 556-ATSAML21E17B-MUT	Microchip Technology	ARM Microcontrollers - MCU ARM Cortex-M0+ 64KB flash 12kb SRAM Learn More about Microchip Technology microchip sam l21 mcus	Datasheet	8,498In Stock	Cut Tape $5.55 $5.36 Reel $4.59 MouseReel Available	Min.: 1 Mult.: 1 : 5,000	SAML21	SMD/SMT	VQFN-32	ARM Cortex M0+	128 kB	32 bit	12 bit	48 MHz	25 I/O	16 kB	1.62 V	3.63 V	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU ARM Cortex-M0+ 128KBFlash 24KB SRAM ATSAML21G17B-AUT Microchip Technology 1: $5.94 1,352In Stock	Mfr. Part # ATSAML21G17B-AUT Mouser Part # 556-ATSAML21G17B-AUT	Microchip Technology	ARM Microcontrollers - MCU ARM Cortex-M0+ 128KBFlash 24KB SRAM Learn More about Microchip Technology microchip sam l21 mcus	Datasheet	1,352In Stock	Cut Tape $5.94 $5.76 Reel $4.89 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	SAML21	SMD/SMT	TQFP-48	ARM Cortex M0+	128 kB	32 bit	12 bit	48 MHz	37 I/O	16 kB	1.62 V	3.63 V	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU 48TQFP 85C, GREEN,1.6-3.6V,48MHz ATSAML21G16B-ANT Microchip Technology 1: $5.85 1,770In Stock	Mfr. Part # ATSAML21G16B-ANT Mouser Part # 579-ATSAML21G16B-ANT	Microchip Technology	ARM Microcontrollers - MCU 48TQFP 85C, GREEN,1.6-3.6V,48MHz Learn More about Microchip Technology microchip sam l21 mcus	Datasheet	1,770In Stock	Cut Tape $5.85 $5.66 Reel $4.81	Min.: 1 Mult.: 1 : 2,500	SAML21	SMD/SMT	TQFP-48	ARM Cortex M0+	64 kB	32 bit	12 bit	48 MHz	37 I/O	8 kB	1.62 V	3.63 V	- 40 C	+ 105 C	Reel, Cut Tape
ARM Microcontrollers - MCU ARM Cortex-M0+ 256KBFlash 40KB SRAM ATSAML21J17B-AUT Microchip Technology 1: $6.27 1,077In Stock	Mfr. Part # ATSAML21J17B-AUT Mouser Part # 556-ATSAML21J17B-AUT	Microchip Technology	ARM Microcontrollers - MCU ARM Cortex-M0+ 256KBFlash 40KB SRAM Learn More about Microchip Technology microchip sam l21 mcus	Datasheet	1,077In Stock	Cut Tape $6.27 $6.02 Reel $5.15 MouseReel Available	Min.: 1 Mult.: 1 : 1,500	SAML21	SMD/SMT	TQFP-64	ARM Cortex M0+	128 kB	32 bit	12 bit	48 MHz	51 I/O	16 kB	1.62 V	3.63 V	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU 32QFN 85C, GREEN,1.6-3.6V,48MHz ATSAML21E15B-MNT Microchip Technology 1: $4.51 4,665In Stock	Mfr. Part # ATSAML21E15B-MNT Mouser Part # 579-ATSAML21E15B-MNT	Microchip Technology	ARM Microcontrollers - MCU 32QFN 85C, GREEN,1.6-3.6V,48MHz Learn More about Microchip Technology microchip sam l21 mcus	Datasheet	4,665In Stock	Cut Tape $4.51 $4.34 Reel $3.73	Min.: 1 Mult.: 1 : 5,000	SAML21	SMD/SMT	VQFN-32	ARM Cortex M0+	32 kB	32 bit	12 bit	48 MHz	25 I/O	4 kB	1.62 V	3.63 V	- 40 C	+ 105 C	Reel, Cut Tape
ARM Microcontrollers - MCU ARM Cortex-M0+ 64KB flash 12kb SRAM ATSAML21E16B-AUT Microchip Technology 1: $5.30 338In Stock	Mfr. Part # ATSAML21E16B-AUT Mouser Part # 556-ATSAML21E16B-AUT	Microchip Technology	ARM Microcontrollers - MCU ARM Cortex-M0+ 64KB flash 12kb SRAM Learn More about Microchip Technology microchip sam l21 mcus	Datasheet	338In Stock	Cut Tape $5.30 $5.14 Reel $4.37 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	SAML21	SMD/SMT	TQFP-32	ARM Cortex M0+	64 kB	32 bit	12 bit	48 MHz	25 I/O	8 kB	1.62 V	3.63 V	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU ARM Cortex-M0+ 64KB flash 12kb SRAM ATSAML21E15B-MUT Microchip Technology 1: $4.30 3,708In Stock	Mfr. Part # ATSAML21E15B-MUT Mouser Part # 556-ATSAML21E15B-MUT	Microchip Technology	ARM Microcontrollers - MCU ARM Cortex-M0+ 64KB flash 12kb SRAM Learn More about Microchip Technology microchip sam l21 mcus	Datasheet	3,708In Stock	Cut Tape $4.30 $4.15 Reel $3.54 MouseReel Available	Min.: 1 Mult.: 1 : 5,000	SAML21	SMD/SMT	VQFN-32	ARM Cortex M0+	32 kB	32 bit	12 bit	48 MHz	25 I/O	4 kB	1.62 V	3.63 V	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU WLCSP64, IND TEMP GREEN, 1.6-3.6V, 48MHz ATSAML21J18B-UUT Microchip Technology 5,000: $7.61 20,000In Stock Factory Special Order	Mfr. Part # ATSAML21J18B-UUT Mouser Part # 556-ATSAML21J18B-UUT Factory Special Order	Microchip Technology	ARM Microcontrollers - MCU WLCSP64, IND TEMP GREEN, 1.6-3.6V, 48MHz	Datasheet	20,000In Stock	Reel $7.61	Min.: 5,000 Mult.: 5,000 : 5,000	SAML21	SMD/SMT	WLCSP-64	ARM Cortex M0	256 kB	32 bit	12 bit	48 MHz	51 I/O	32 kB	1.62 V	3.63 V	- 40 C	+ 85 C	Reel
ARM Microcontrollers - MCU 32TQFP 85C, GREEN,1.6-3.6V,48MHz ATSAML21E16B-ANT Microchip Technology 1: $5.58 3,591In Stock	Mfr. Part # ATSAML21E16B-ANT Mouser Part # 579-ATSAML21E16B-ANT	Microchip Technology	ARM Microcontrollers - MCU 32TQFP 85C, GREEN,1.6-3.6V,48MHz Learn More about Microchip Technology microchip sam l21 mcus	Datasheet	3,591In Stock	Cut Tape $5.58 $5.38 Reel $4.60	Min.: 1 Mult.: 1 : 2,000	SAML21	SMD/SMT	TQFP-32	ARM Cortex M0+	64 kB	32 bit	12 bit	48 MHz	25 I/O	8 kB	1.62 V	3.63 V	- 40 C	+ 105 C	Reel, Cut Tape
ARM Microcontrollers - MCU 32TQFP 85C, GREEN,1.6-3.6V,48MHz ATSAML21E17B-ANT Microchip Technology 1: $5.94 1,232In Stock	Mfr. Part # ATSAML21E17B-ANT Mouser Part # 579-ATSAML21E17B-ANT	Microchip Technology	ARM Microcontrollers - MCU 32TQFP 85C, GREEN,1.6-3.6V,48MHz Learn More about Microchip Technology microchip sam l21 mcus	Datasheet	1,232In Stock	Cut Tape $5.94 $5.76 Reel $4.90	Min.: 1 Mult.: 1 : 2,000	SAML21	SMD/SMT	TQFP-32	ARM Cortex M0+	128 kB	32 bit	12 bit	48 MHz	25 I/O	16 kB	1.62 V	3.63 V	- 40 C	+ 105 C	Reel, Cut Tape
ARM Microcontrollers - MCU 32TQFP 85C, GREEN,1.6-3.6V,48MHz ATSAML21E15B-ANT Microchip Technology 1: $4.86 2,001In Stock	Mfr. Part # ATSAML21E15B-ANT Mouser Part # 579-ATSAML21E15B-ANT	Microchip Technology	ARM Microcontrollers - MCU 32TQFP 85C, GREEN,1.6-3.6V,48MHz Learn More about Microchip Technology microchip sam l21 mcus	Datasheet	2,001In Stock	Cut Tape $4.86 $4.72 Reel $4.02	Min.: 1 Mult.: 1 : 2,000	SAML21	SMD/SMT	TQFP-32	ARM Cortex M0+	32 kB	32 bit	12 bit	48 MHz	25 I/O	4 kB	1.62 V	3.63 V	- 40 C	+ 105 C	Reel, Cut Tape
ARM Microcontrollers - MCU 32QFN 85C, GREEN,1.6-3.6V,48MHz ATSAML21E16B-MNT Microchip Technology 1: $5.49 381In Stock	Mfr. Part # ATSAML21E16B-MNT Mouser Part # 579-ATSAML21E16B-MNT	Microchip Technology	ARM Microcontrollers - MCU 32QFN 85C, GREEN,1.6-3.6V,48MHz Learn More about Microchip Technology microchip sam l21 mcus	Datasheet	381In Stock	Cut Tape $5.49 $5.29 Reel $4.51	Min.: 1 Mult.: 1 : 5,000	SAML21	SMD/SMT	VQFN-32	ARM Cortex M0+	64 kB	32 bit	12 bit	48 MHz	25 I/O	8 kB	1.62 V	3.63 V	- 40 C	+ 105 C	Reel, Cut Tape
ARM Microcontrollers - MCU ARM Cortex-M0+ 128KBFlash 24KB SRAM ATSAML21G16B-AUT Microchip Technology 1: $5.56 1,448In Stock	Mfr. Part # ATSAML21G16B-AUT Mouser Part # 556-ATSAML21G16B-AUT	Microchip Technology	ARM Microcontrollers - MCU ARM Cortex-M0+ 128KBFlash 24KB SRAM Learn More about Microchip Technology microchip sam l21 mcus	Datasheet	1,448In Stock	Cut Tape $5.56 $5.38 Reel $4.59 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	SAML21	SMD/SMT	TQFP-48	ARM Cortex M0+	64 kB	32 bit	12 bit	48 MHz	37 I/O	8 kB	1.62 V	3.63 V	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU ARM Cortex-M0+ 256KBFlash 40KB SRAM ATSAML21J16B-AUT Microchip Technology 1: $5.88 1,094In Stock	Mfr. Part # ATSAML21J16B-AUT Mouser Part # 556-ATSAML21J16B-AUT	Microchip Technology	ARM Microcontrollers - MCU ARM Cortex-M0+ 256KBFlash 40KB SRAM Learn More about Microchip Technology microchip sam l21 mcus	Datasheet	1,094In Stock	Cut Tape $5.88 $5.66 Reel $4.82 MouseReel Available	Min.: 1 Mult.: 1 : 1,500	SAML21	SMD/SMT	TQFP-64	ARM Cortex M0+	64 kB	32 bit	12 bit	48 MHz	51 I/O	8 kB	1.62 V	3.63 V	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU 64TQFP 85C, GREEN,1.6-3.6V,48MHz ATSAML21J18B-ANT Microchip Technology 1: $9.15 824In Stock	Mfr. Part # ATSAML21J18B-ANT Mouser Part # 579-ATSAML21J18B-ANT	Microchip Technology	ARM Microcontrollers - MCU 64TQFP 85C, GREEN,1.6-3.6V,48MHz Learn More about Microchip Technology microchip sam l21 mcus	Datasheet	824In Stock	Cut Tape $9.15 $8.81 Reel $7.53	Min.: 1 Mult.: 1 : 1,500	SAML21	SMD/SMT	TQFP-64	ARM Cortex M0+	256 kB	32 bit	12 bit	48 MHz	51 I/O	32 kB	1.62 V	3.63 V	- 40 C	+ 105 C	Reel, Cut Tape
ARM Microcontrollers - MCU 64TQFP 85C, GREEN,1.6-3.6V,48MHz ATSAML21J17B-ANT Microchip Technology 1: $6.57 1,482In Stock	Mfr. Part # ATSAML21J17B-ANT Mouser Part # 579-ATSAML21J17B-ANT	Microchip Technology	ARM Microcontrollers - MCU 64TQFP 85C, GREEN,1.6-3.6V,48MHz Learn More about Microchip Technology microchip sam l21 mcus	Datasheet	1,482In Stock	Cut Tape $6.57 $6.36 Reel $5.41	Min.: 1 Mult.: 1 : 1,500	SAML21	SMD/SMT	TQFP-64	ARM Cortex M0+	128 kB	32 bit	12 bit	48 MHz	51 I/O	16 kB	1.62 V	3.63 V	- 40 C	+ 105 C	Reel, Cut Tape
ARM Microcontrollers - MCU ARM Cortex-M0+ 128KBFlash 24KB SRAM ATSAML21G17B-MUT Microchip Technology 1: $5.80 2,621In Stock	Mfr. Part # ATSAML21G17B-MUT Mouser Part # 556-ATSAML21G17B-MUT	Microchip Technology	ARM Microcontrollers - MCU ARM Cortex-M0+ 128KBFlash 24KB SRAM Learn More about Microchip Technology microchip sam l21 mcus	Datasheet	2,621In Stock	Cut Tape $5.80 $5.59 Reel $4.80 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	SAML21	SMD/SMT	VQFN-48	ARM Cortex M0+	128 kB	32 bit	12 bit	48 MHz	37 I/O	16 kB	1.62 V	3.63 V	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU ARM Cortex-M0+ 256KBFlash 24KB SRAM ATSAML21G18B-MUT Microchip Technology 1: $8.11 6,302In Stock	Mfr. Part # ATSAML21G18B-MUT Mouser Part # 556-ATSAML21G18B-MUT	Microchip Technology	ARM Microcontrollers - MCU ARM Cortex-M0+ 256KBFlash 24KB SRAM Learn More about Microchip Technology microchip sam l21 mcus	Datasheet	6,302In Stock	Cut Tape $8.11 $7.87 Reel $6.70 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	SAML21	SMD/SMT	VQFN-48	ARM Cortex M0+	256 kB	32 bit	12 bit	48 MHz	37 I/O	32 kB	1.62 V	3.63 V	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU ARM Cortex-M0+ 256K Flash/32k SRAM ATSAML21E18B-AUT Microchip Technology 1: $7.87 1,779In Stock	Mfr. Part # ATSAML21E18B-AUT Mouser Part # 556-ATSAML21E18B-AUT	Microchip Technology	ARM Microcontrollers - MCU ARM Cortex-M0+ 256K Flash/32k SRAM Learn More about Microchip Technology microchip sam l21 mcus	Datasheet	1,779In Stock	Cut Tape $7.87 $7.62 Reel $6.47 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	SAML21	SMD/SMT	TQFP-32	ARM Cortex M0+	256 kB	32 bit	12 bit	48 MHz	25 I/O	32 kB	1.62 V	3.63 V	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU ARM Cortex-M0+ 64KB flash 12kb SRAM ATSAML21E18B-MUT Microchip Technology 1: $7.74 820In Stock 15,000Expected 12/14/2026	Mfr. Part # ATSAML21E18B-MUT Mouser Part # 556-ATSAML21E18B-MUT	Microchip Technology	ARM Microcontrollers - MCU ARM Cortex-M0+ 64KB flash 12kb SRAM Learn More about Microchip Technology microchip sam l21 mcus	Datasheet	820In Stock 15,000Expected 12/14/2026	Cut Tape $7.74 $7.49 Reel $6.34 MouseReel Available	Min.: 1 Mult.: 1 : 5,000	SAML21	SMD/SMT	VQFN-32	ARM Cortex M0+	256 kB	32 bit	12 bit	48 MHz	25 I/O	32 kB	1.62 V	3.63 V	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU ARM Cortex-M0+ 128KBFlash 24KB SRAM ATSAML21G18B-AUT Microchip Technology 1: $8.11 2,329In Stock	Mfr. Part # ATSAML21G18B-AUT Mouser Part # 556-ATSAML21G18B-AUT	Microchip Technology	ARM Microcontrollers - MCU ARM Cortex-M0+ 128KBFlash 24KB SRAM Learn More about Microchip Technology microchip sam l21 mcus	Datasheet	2,329In Stock	Cut Tape $8.11 $7.87 Reel $6.70 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	SAML21	SMD/SMT	TQFP-48	ARM Cortex M0+	256 kB	32 bit	12 bit	48 MHz	37 I/O	32 kB	1.62 V	3.63 V	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU ARM Cortex-M0+ 256KBFlash 40KB SRAM ATSAML21J18B-AUT Microchip Technology 1: $8.71 1,518In Stock	Mfr. Part # ATSAML21J18B-AUT Mouser Part # 556-ATSAML21J18B-AUT	Microchip Technology	ARM Microcontrollers - MCU ARM Cortex-M0+ 256KBFlash 40KB SRAM Learn More about Microchip Technology microchip sam l21 mcus	Datasheet	1,518In Stock	Cut Tape $8.71 $8.42 Reel $7.16 MouseReel Available	Min.: 1 Mult.: 1 : 1,500	SAML21	SMD/SMT	TQFP-64	ARM Cortex M0+	256 kB	32 bit	12 bit	48 MHz	51 I/O	32 kB	1.62 V	3.63 V	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU ARM Cortex-M0+ 256KBFlash 40KB SRAM ATSAML21J18B-MUT Microchip Technology 1: $8.53 4In Stock 4,000Expected 1/4/2027	Mfr. Part # ATSAML21J18B-MUT Mouser Part # 556-ATSAML21J18B-MUT	Microchip Technology	ARM Microcontrollers - MCU ARM Cortex-M0+ 256KBFlash 40KB SRAM Learn More about Microchip Technology microchip sam l21 mcus	Datasheet	4In Stock 4,000Expected 1/4/2027	Cut Tape $8.53 $8.24 Reel $7.03 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	SAML21	SMD/SMT	VQFN-64	ARM Cortex M0+	256 kB	32 bit	12 bit	48 MHz	51 I/O	32 kB	1.62 V	3.63 V	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU ARM Cortex-M0+ 64KB flash 12kb SRAM ATSAML21E15B-AUT Microchip Technology 2,000: $3.81 Non-Stocked Lead-Time 16 Weeks	Mfr. Part # ATSAML21E15B-AUT Mouser Part # 556-ATSAML21E15B-AUT	Microchip Technology	ARM Microcontrollers - MCU ARM Cortex-M0+ 64KB flash 12kb SRAM Learn More about Microchip Technology microchip sam l21 mcus	Datasheet	Non-Stocked Lead-Time 16 Weeks	Reel $3.81	Min.: 2,000 Mult.: 2,000 : 2,000	SAML21	SMD/SMT	TQFP-32	ARM Cortex M0+	32 kB	32 bit	12 bit	48 MHz	25 I/O	4 kB	1.62 V	3.63 V	- 40 C	+ 85 C	Reel

SAM L21 Microcontrollers

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