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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Part #

ARM Microcontrollers - MCU ARM Cortex-M0+ 64KB flash 12kb SRAM

ATSAML21E17B-MUT
Microchip Technology
1: S/16.62
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

Datasheet

8,498In Stock

Cut Tape

S/16.62

S/16.04

Reel

S/13.74

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+ 256KBFlash 40KB SRAM

ATSAML21J17B-MUT
Microchip Technology
1: S/18.33
5,870In Stock

Mfr. Part #
ATSAML21J17B-MUT

Mouser Part #
556-ATSAML21J17B-MUT

Microchip Technology

ARM Microcontrollers - MCU ARM Cortex-M0+ 256KBFlash 40KB SRAM

Learn More

Datasheet

5,870In Stock

Cut Tape

S/18.33

Reel

S/18.33

Quote

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 48TQFP 85C, GREEN,1.6-3.6V,48MHz

ATSAML21G16B-ANT
Microchip Technology
1: S/17.52
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

Datasheet

1,770In Stock

Cut Tape

S/17.52

Reel

S/17.52

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+ 128KBFlash 24KB SRAM

ATSAML21G18B-AUT
Microchip Technology
1: S/24.29
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

Datasheet

2,329In Stock

Cut Tape

S/24.29

S/23.55

S/20.05

Reel

S/20.05

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+ 128KBFlash 24KB SRAM

ATSAML21G17B-AUT
Microchip Technology
1: S/18.18
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

Datasheet

1,352In Stock

Cut Tape

S/18.18

S/17.79

Reel

S/17.79

Quote

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: S/18.76
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

Datasheet

1,077In Stock

Cut Tape

S/18.76

S/18.02

S/15.73

Reel

S/15.73

Quote

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 ARM Cortex-M0+ 64KB flash 12kb SRAM

ATSAML21E16B-AUT
Microchip Technology
1: S/18.29
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

Datasheet

338In Stock

Cut Tape

S/18.29

S/15.49

Reel

S/15.49

Quote

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 32QFN 85C, GREEN,1.6-3.6V,48MHz

ATSAML21E15B-MNT
Microchip Technology
1: S/12.57
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

Datasheet

4,665In Stock

Cut Tape

S/12.57

S/12.38

S/12.34

S/11.95

Reel

S/11.17

Quote

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 32TQFP 85C, GREEN,1.6-3.6V,48MHz

ATSAML21E15B-ANT
Microchip Technology
1: S/14.56
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

Datasheet

2,001In Stock

Cut Tape

S/14.56

S/14.13

S/14.09

S/12.03

Reel

S/12.03

Quote

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 32TQFP 85C, GREEN,1.6-3.6V,48MHz

ATSAML21E16B-ANT
Microchip Technology
1: S/16.70
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

Datasheet

3,591In Stock

Cut Tape

S/16.70

S/14.71

Reel

S/14.71

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: S/17.79
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

Datasheet

1,232In Stock

Cut Tape

S/17.79

S/17.24

S/17.20

S/14.67

Reel

S/14.67

Quote

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: S/23.24
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

S/23.24

Quote

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 ARM Cortex-M0+ 64KB flash 12kb SRAM

ATSAML21E15B-MUT
Microchip Technology
1: S/12.88
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

Datasheet

3,708In Stock

Cut Tape

S/12.88

S/12.42

Reel

S/10.59

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 64TQFP 85C, GREEN,1.6-3.6V,48MHz

ATSAML21J17B-ANT
Microchip Technology
1: S/19.66
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

Datasheet

1,482In Stock

Cut Tape

S/19.66

S/19.03

S/19.00

S/16.19

Reel

S/16.19

Quote

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: S/15.61
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

Datasheet

381In Stock

Cut Tape

S/15.61

Reel

S/13.51

Quote

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: S/16.66
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

Datasheet

1,448In Stock

Cut Tape

S/16.66

Reel

S/16.66

Quote

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: S/17.59
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

Datasheet

1,094In Stock

Cut Tape

S/17.59

S/16.93

S/14.44

Reel

S/14.44

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: S/27.40
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

Datasheet

824In Stock

Cut Tape

S/27.40

S/26.39

S/26.35

S/22.54

Reel

S/22.54

Quote

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: S/17.36
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

Datasheet

2,621In Stock

Cut Tape

S/17.36

Reel

S/16.82

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: S/24.29
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

Datasheet

6,302In Stock

Cut Tape

S/24.29

S/23.55

Reel

S/20.05

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: S/23.55
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

Datasheet

1,779In Stock

Cut Tape

S/23.55

S/22.81

S/19.38

Reel

S/19.38

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: S/23.16
820In Stock

Mfr. Part #
ATSAML21E18B-MUT

Mouser Part #
556-ATSAML21E18B-MUT

Microchip Technology

ARM Microcontrollers - MCU ARM Cortex-M0+ 64KB flash 12kb SRAM

Learn More

Datasheet

820In Stock

Cut Tape

S/23.16

S/22.42

Reel

S/22.38

Quote

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-AUT
Microchip Technology
1: S/26.08
18In Stock
1,500Expected 9/17/2026

Mfr. Part #
ATSAML21J18B-AUT

Mouser Part #
556-ATSAML21J18B-AUT

Microchip Technology

ARM Microcontrollers - MCU ARM Cortex-M0+ 256KBFlash 40KB SRAM

Learn More

Datasheet

18In Stock

1,500Expected 9/17/2026

Cut Tape

S/26.08

S/25.22

S/21.45

Reel

S/21.45

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: S/25.53
4In Stock
4,000Expected 1/28/2027

Mfr. Part #
ATSAML21J18B-MUT

Mouser Part #
556-ATSAML21J18B-MUT

Microchip Technology

ARM Microcontrollers - MCU ARM Cortex-M0+ 256KBFlash 40KB SRAM

Learn More

Datasheet

4In Stock

4,000Expected 1/28/2027

Cut Tape

S/25.53

Reel

S/25.53

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: S/11.41
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

Datasheet

Non-Stocked Lead-Time 16 Weeks

Reel

S/11.41

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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