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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 (GBP) 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 24KB SRAM ATSAML21G18B-MUT Microchip Technology 1: £4.69 6,202In Stock	Mfr. Part No. ATSAML21G18B-MUT Mouser Part No 556-ATSAML21G18B-MUT	Microchip Technology	ARM Microcontrollers - MCU ARM Cortex-M0+ 256KBFlash 24KB SRAM Learn More about Microchip Technology microchip sam l21 mcus	Datasheet	6,202In Stock	Cut Tape £4.69 £4.54 Reel £3.87 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+ 256KBFlash 40KB SRAM ATSAML21J17B-MUT Microchip Technology 1: £3.60 5,700In Stock	Mfr. Part No. ATSAML21J17B-MUT Mouser Part No 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 £3.60 £3.59 £3.48 £3.47 View Reel £2.98 £3.46 £3.45 £3.42 £2.98 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: £3.20 8,338In Stock	Mfr. Part No. ATSAML21E17B-MUT Mouser Part No 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	8,338In Stock	Cut Tape £3.20 £3.09 Reel £2.65 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: £3.43 1,352In Stock	Mfr. Part No. ATSAML21G17B-AUT Mouser Part No 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 £3.43 £3.33 Reel £2.83 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 ARM Cortex-M0+ 256KBFlash 40KB SRAM ATSAML21J17B-AUT Microchip Technology 1: £3.62 1,077In Stock	Mfr. Part No. ATSAML21J17B-AUT Mouser Part No 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 £3.62 £3.47 Reel £2.98 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: £2.60 4,665In Stock	Mfr. Part No. ATSAML21E15B-MNT Mouser Part No 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 £2.60 £2.51 £2.37 Reel £2.16	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: £3.06 338In Stock	Mfr. Part No. ATSAML21E16B-AUT Mouser Part No 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 £3.06 £2.97 Reel £2.52 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: £2.49 3,708In Stock	Mfr. Part No. ATSAML21E15B-MUT Mouser Part No 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 £2.49 £2.39 Reel £2.04 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 32TQFP 85C, GREEN,1.6-3.6V,48MHz ATSAML21E16B-ANT Microchip Technology 1: £3.22 3,591In Stock	Mfr. Part No. ATSAML21E16B-ANT Mouser Part No 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 £3.22 £3.11 £2.88 Reel £2.64	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: £3.43 1,232In Stock	Mfr. Part No. ATSAML21E17B-ANT Mouser Part No 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 £3.43 £3.33 £3.15 Reel £2.83	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 WLCSP64, IND TEMP GREEN, 1.6-3.6V, 48MHz ATSAML21J18B-UUT Microchip Technology 5,000: £4.48 20,000In Stock Factory Special Order	Mfr. Part No. ATSAML21J18B-UUT Mouser Part No 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 £4.48	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 ATSAML21E15B-ANT Microchip Technology 1: £2.81 2,001In Stock	Mfr. Part No. ATSAML21E15B-ANT Mouser Part No 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 £2.81 £2.72 £2.56 Reel £2.31	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 64TQFP 85C, GREEN,1.6-3.6V,48MHz ATSAML21J17B-ANT Microchip Technology 1: £3.79 1,482In Stock	Mfr. Part No. ATSAML21J17B-ANT Mouser Part No 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 £3.79 £3.68 £3.45 Reel £3.13	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 32QFN 85C, GREEN,1.6-3.6V,48MHz ATSAML21E16B-MNT Microchip Technology 1: £3.17 381In Stock	Mfr. Part No. ATSAML21E16B-MNT Mouser Part No 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 £3.17 £3.06 Reel £2.60	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: £3.28 1,448In Stock	Mfr. Part No. ATSAML21G16B-AUT Mouser Part No 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 £3.28 £3.23 £3.18 £3.11 Reel £2.72 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: £3.40 1,094In Stock	Mfr. Part No. ATSAML21J16B-AUT Mouser Part No 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 £3.40 £3.27 Reel £2.78 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: £5.28 824In Stock	Mfr. Part No. ATSAML21J18B-ANT Mouser Part No 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 £5.28 £5.09 Reel £4.35	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 ARM Cortex-M0+ 128KBFlash 24KB SRAM ATSAML21G17B-MUT Microchip Technology 1: £3.35 2,621In Stock	Mfr. Part No. ATSAML21G17B-MUT Mouser Part No 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 £3.35 £3.23 Reel £2.85 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 48TQFP 85C, GREEN,1.6-3.6V,48MHz ATSAML21G16B-ANT Microchip Technology 1: £3.38 1,770In Stock	Mfr. Part No. ATSAML21G16B-ANT Mouser Part No 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 £3.38 £3.27 Reel £2.78	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+ 256K Flash/32k SRAM ATSAML21E18B-AUT Microchip Technology 1: £4.54 1,779In Stock	Mfr. Part No. ATSAML21E18B-AUT Mouser Part No 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 £4.54 £4.40 Reel £3.74 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+ 128KBFlash 24KB SRAM ATSAML21G18B-AUT Microchip Technology 1: £4.69 2,329In Stock	Mfr. Part No. ATSAML21G18B-AUT Mouser Part No 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 £4.69 £4.54 Reel £3.87 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: £5.03 1,503In Stock	Mfr. Part No. ATSAML21J18B-AUT Mouser Part No 556-ATSAML21J18B-AUT	Microchip Technology	ARM Microcontrollers - MCU ARM Cortex-M0+ 256KBFlash 40KB SRAM Learn More about Microchip Technology microchip sam l21 mcus	Datasheet	1,503In Stock	Cut Tape £5.03 £4.86 Reel £4.14 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+ 64KB flash 12kb SRAM ATSAML21E18B-MUT Microchip Technology 1: £4.47 14,482Expected 25/12/2026	Mfr. Part No. ATSAML21E18B-MUT Mouser Part No 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	14,482Expected 25/12/2026	Cut Tape £4.47 £4.32 Reel £3.67 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+ 256KBFlash 40KB SRAM ATSAML21J18B-MUT Microchip Technology 1: £4.92 3,754Expected 04/01/2027	Mfr. Part No. ATSAML21J18B-MUT Mouser Part No 556-ATSAML21J18B-MUT	Microchip Technology	ARM Microcontrollers - MCU ARM Cortex-M0+ 256KBFlash 40KB SRAM Learn More about Microchip Technology microchip sam l21 mcus	Datasheet	3,754Expected 04/01/2027	Cut Tape £4.92 £4.76 Reel £4.06 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: £2.20 Non-Stocked Lead-Time 16 Weeks	Mfr. Part No. ATSAML21E15B-AUT Mouser Part No 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 £2.20	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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