ARM Microcontrollers - MCU

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SAM D21 Arm® Cortex®-M0+ Microcontrollers

Microchip Technology SAM D21 Arm® Cortex®-M0+ Microcontrollers (MCUs) are low-power MCUs that range from 32- to 64-pins with up to 256KB Flash and 32KB of SRAM. The Microchip Technology SAM D21 MCUs have a maximum 48MHz frequency and reach 2.46 CoreMark/MHz. The devices are designed for simple and intuitive migration with identical peripheral modules. Features include hex-compatible code, identical linear address map, and pin-compatible migration paths between all devices in the product series. All devices include intelligent and flexible peripherals, an Event System for inter-peripheral signaling, and support for capacitive touch buttons, slider, and wheel user interfaces.

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Part #

ARM Microcontrollers - MCU 32TQFP,85C TEMP, GREEN, 3.3V, 48MHZ, T&R

ATSAMD21E15B-AUT
Microchip Technology
1: $3.67
1,383In Stock

Mfr. Part #
ATSAMD21E15B-AUT

Mouser Part #
556-ATSAMD21E15B-AUT

Microchip Technology

ARM Microcontrollers - MCU 32TQFP,85C TEMP, GREEN, 3.3V, 48MHZ, T&R

Learn More

Datasheet

1,383In Stock

Cut Tape

$3.67

$3.33

$3.01

Reel

$3.01

MouseReel Available

Min.: 1
Mult.: 1

Reel: 2,000

SAMD21

SMD/SMT

TQFP-32

ARM Cortex M0+

32 kB

32 bit

12 bit

48 MHz

26 I/O

4 kB

1.62 V

3.63 V

- 40 C

+ 85 C

AEC-Q100

Reel, Cut Tape, MouseReel

ARM Microcontrollers - MCU 32QFN,85C TEMP, GREEN, 3.3V, 48MHZ, T&R

ATSAMD21E15B-MUT
Microchip Technology
1: $3.61
2,802In Stock

Mfr. Part #
ATSAMD21E15B-MUT

Mouser Part #
556-ATSAMD21E15B-MUT

Microchip Technology

ARM Microcontrollers - MCU 32QFN,85C TEMP, GREEN, 3.3V, 48MHZ, T&R

Learn More

Datasheet

2,802In Stock

Cut Tape

$3.61

$3.27

$2.98

Reel

$2.98

MouseReel Available

Min.: 1
Mult.: 1

Reel: 5,000

SAMD21

SMD/SMT

QFN-32

ARM Cortex M0+

32 kB

32 bit

12 bit

48 MHz

26 I/O

4 kB

1.62 V

3.63 V

- 40 C

+ 85 C

AEC-Q100

Reel, Cut Tape, MouseReel

ARM Microcontrollers - MCU 48QFN,85C TEMP, GREEN, 3.3V, 48MHZ

ATSAMD21G16B-MU
Microchip Technology
1: $4.22
682In Stock

Mfr. Part #
ATSAMD21G16B-MU

Mouser Part #
556-ATSAMD21G16B-MU

Microchip Technology

ARM Microcontrollers - MCU 48QFN,85C TEMP, GREEN, 3.3V, 48MHZ

Learn More

Datasheet

682In Stock

$4.22

$3.81

$3.46

Min.: 1
Mult.: 1

SAMD21

SMD/SMT

QFN-48

ARM Cortex M0+

64 kB

32 bit

12 bit

48 MHz

38 I/O

8 kB

1.62 V

3.63 V

- 40 C

+ 85 C

AEC-Q100

Tray

ARM Microcontrollers - MCU 48QFN,85C TEMP, GREEN, 3.3V, 48MHZ, T&R

ATSAMD21G16B-MUT
Microchip Technology
1: $4.32
2,940In Stock

Mfr. Part #
ATSAMD21G16B-MUT

Mouser Part #
556-ATSAMD21G16B-MUT

Microchip Technology

ARM Microcontrollers - MCU 48QFN,85C TEMP, GREEN, 3.3V, 48MHZ, T&R

Learn More

Datasheet

2,940In Stock

Cut Tape

$4.32

$3.94

$3.58

Reel

$3.58

MouseReel Available

Min.: 1
Mult.: 1

Reel: 4,000

SAMD21

SMD/SMT

QFN-48

ARM Cortex M0+

64 kB

32 bit

12 bit

48 MHz

38 I/O

8 kB

1.62 V

3.63 V

- 40 C

+ 85 C

AEC-Q100

Reel, Cut Tape, MouseReel

ARM Microcontrollers - MCU 128KB 16KB32TQFP GRN1.6-3.6V48MHz

ATSAMD21E17A-AU
Microchip Technology
1: $4.34
322In Stock

Mfr. Part #
ATSAMD21E17A-AU

Mouser Part #
556-ATSAMD21E17A-AU

Microchip Technology

ARM Microcontrollers - MCU 128KB 16KB32TQFP GRN1.6-3.6V48MHz

Learn More

Datasheet

322In Stock

$4.34

$3.95

$3.61

Min.: 1
Mult.: 1

SAMD21

SMD/SMT

TQFP-32

ARM Cortex M0+

128 kB

32 bit

12 bit

48 MHz

26 I/O

16 kB

1.62 V

3.63 V

- 40 C

+ 85 C

AEC-Q100

Tray

ARM Microcontrollers - MCU CM0,QFN32, 128kFlash,Trays,USB, I Temp

ATSAMD21E17D-MU
Microchip Technology
1: $4.45
411In Stock

Mfr. Part #
ATSAMD21E17D-MU

Mouser Part #
556-ATSAMD21E17D-MU

Microchip Technology

ARM Microcontrollers - MCU CM0,QFN32, 128kFlash,Trays,USB, I Temp

Learn More

Datasheet

411In Stock

$4.45

$4.03

$3.64

Min.: 1
Mult.: 1

SAMD21

SMD/SMT

VQFN-32

ARM Cortex M0+

128 kB

32 bit

12 bit

48 MHz

26 I/O

16 kB

1.62 V

3.63 V

- 40 C

+ 85 C

AEC-Q100

Tray

ARM Microcontrollers - MCU 32QFN 125C, GREEN,1.6-3.6V,48MHz

ATSAMD21E18A-MF
Microchip Technology
1: $6.62
136In Stock

Mfr. Part #
ATSAMD21E18A-MF

Mouser Part #
556-ATSAMD21E18A-MF

Microchip Technology

ARM Microcontrollers - MCU 32QFN 125C, GREEN,1.6-3.6V,48MHz

Learn More

Datasheet

136In Stock

$6.62

$6.00

$5.44

Min.: 1
Mult.: 1

SAMD21

SMD/SMT

QFN-32

ARM Cortex M0+

256 kB

32 bit

12 bit

48 MHz

26 I/O

32 kB

1.62 V

3.63 V

- 40 C

+ 125 C

AEC-Q100

Tray

ARM Microcontrollers - MCU 48TQFP,125C TEMP, GREEN, 3.3V, 48MHZ

ATSAMD21G16B-AF
Microchip Technology
1: $4.70
46In Stock

Mfr. Part #
ATSAMD21G16B-AF

Mouser Part #
556-ATSAMD21G16B-AF

Microchip Technology

ARM Microcontrollers - MCU 48TQFP,125C TEMP, GREEN, 3.3V, 48MHZ

Learn More

Datasheet

46In Stock

$4.70

$4.29

$3.88

Min.: 1
Mult.: 1

SAMD21

SMD/SMT

TQFP-48

ARM Cortex M0+

64 kB

32 bit

12 bit

48 MHz

38 I/O

8 kB

1.62 V

3.63 V

- 40 C

+ 125 C

AEC-Q100

Tray

ARM Microcontrollers - MCU 48TQFP,125C TEMP, GREEN, 3.3V, 48MHZ,T&R

ATSAMD21G16B-AFT
Microchip Technology
1: $4.85
802In Stock

Mfr. Part #
ATSAMD21G16B-AFT

Mouser Part #
556-ATSAMD21G16B-AFT

Microchip Technology

ARM Microcontrollers - MCU 48TQFP,125C TEMP, GREEN, 3.3V, 48MHZ,T&R

Learn More

Datasheet

802In Stock

Cut Tape

$4.85

$4.40

$4.00

Reel

$4.00

MouseReel Available

Min.: 1
Mult.: 1

Reel: 2,500

SAMD21

SMD/SMT

TQFP-48

ARM Cortex M0+

64 kB

32 bit

12 bit

48 MHz

38 I/O

8 kB

1.62 V

3.63 V

- 40 C

+ 125 C

AEC-Q100

Reel, Cut Tape, MouseReel

ARM Microcontrollers - MCU 128KB 16KB 48TQFP GRN1.6-3.6V48MHz

ATSAMD21G17A-AU
Microchip Technology
1: $4.57
69In Stock

Mfr. Part #
ATSAMD21G17A-AU

Mouser Part #
556-ATSAMD21G17A-AU

Microchip Technology

ARM Microcontrollers - MCU 128KB 16KB 48TQFP GRN1.6-3.6V48MHz

Learn More

Datasheet

69In Stock

$4.57

$4.17

$3.78

Min.: 1
Mult.: 1

SAMD21

SMD/SMT

TQFP-48

ARM Cortex M0+

128 kB

32 bit

12 bit

48 MHz

38 I/O

16 kB

1.62 V

3.63 V

- 40 C

+ 85 C

AEC-Q100

Tray

ARM Microcontrollers - MCU CM0, TQFP 48 , 128KFlash, USB, Extended Temp 125C, Tray

ATSAMD21G17D-AF
Microchip Technology
1: $5.02
183In Stock

Mfr. Part #
ATSAMD21G17D-AF

Mouser Part #
556-ATSAMD21G17D-AF

Microchip Technology

ARM Microcontrollers - MCU CM0, TQFP 48 , 128KFlash, USB, Extended Temp 125C, Tray

Learn More

Datasheet

183In Stock

$5.02

$4.57

$4.15

Min.: 1
Mult.: 1

SAMD21

SMD/SMT

TQFP-48

ARM Cortex M0+

128 kB

32 bit

12 bit

48 MHz

38 I/O

16 kB

1.62 V

3.63 V

- 40 C

+ 125 C

AEC-Q100

Tray

ARM Microcontrollers - MCU CM0, TQFP 64 , 128KFlash, USB, Extended Temp 125C, Tray

ATSAMD21J17D-AF
Microchip Technology
1: $5.32
206In Stock

Mfr. Part #
ATSAMD21J17D-AF

Mouser Part #
556-ATSAMD21J17D-AF

Microchip Technology

ARM Microcontrollers - MCU CM0, TQFP 64 , 128KFlash, USB, Extended Temp 125C, Tray

Learn More

Datasheet

206In Stock

$5.32

$4.82

$4.36

Min.: 1
Mult.: 1

SAMD21

SMD/SMT

TQFP-64

ARM Cortex M0+

128 kB

32 bit

12 bit

48 MHz

52 I/O

16 kB

1.62 V

3.63 V

- 40 C

+ 125 C

AEC-Q100

Tray

ARM Microcontrollers - MCU 64QFN 125C, GREEN,1.6-3.6V,48MHz

ATSAMD21J18A-MF
Microchip Technology
1: $7.33
327In Stock

Mfr. Part #
ATSAMD21J18A-MF

Mouser Part #
556-ATSAMD21J18A-MF

Microchip Technology

ARM Microcontrollers - MCU 64QFN 125C, GREEN,1.6-3.6V,48MHz

Learn More

Datasheet

327In Stock

$7.33

$6.65

$6.03

Min.: 1
Mult.: 1

SAMD21

SMD/SMT

QFN-64

ARM Cortex M0+

256 kB

32 bit

12 bit

48 MHz

52 I/O

32 kB

1.62 V

3.63 V

- 40 C

+ 125 C

AEC-Q100

Tray

ARM Microcontrollers - MCU 32QFN 125C, GREEN,1.6-3.6V,48MHz

ATSAMD21E15L-MF
Microchip Technology
1: $3.81
288In Stock

Mfr. Part #
ATSAMD21E15L-MF

Mouser Part #
556-ATSAMD21E15L-MF

Microchip Technology

ARM Microcontrollers - MCU 32QFN 125C, GREEN,1.6-3.6V,48MHz

Learn More

Datasheet

288In Stock

$3.81

$3.46

$3.15

Min.: 1
Mult.: 1

SAMD21

SMD/SMT

QFN-32

ARM Cortex M0+

32 kB

32 bit

12 bit

48 MHz

26 I/O

4 kB

1.62 V

3.63 V

- 40 C

+ 125 C

AEC-Q100

Tray

ARM Microcontrollers - MCU 32QFN,85C TEMP, GREEN, 3.3V, 48MHZ

ATSAMD21E16B-MU
Microchip Technology
1: $4.00
399In Stock

Mfr. Part #
ATSAMD21E16B-MU

Mouser Part #
556-ATSAMD21E16B-MU

Microchip Technology

ARM Microcontrollers - MCU 32QFN,85C TEMP, GREEN, 3.3V, 48MHZ

Learn More

Datasheet

399In Stock

$4.00

$3.64

$3.32

Min.: 1
Mult.: 1

SAMD21

SMD/SMT

QFN-32

ARM Cortex M0+

64 kB

32 bit

12 bit

48 MHz

26 I/O

8 kB

1.62 V

3.63 V

- 40 C

+ 85 C

AEC-Q100

Tray

ARM Microcontrollers - MCU 48TQFP,85C TEMP, GREEN, 3.3V, 48MHZ

ATSAMD21G15B-AU
Microchip Technology
1: $3.70
293In Stock

Mfr. Part #
ATSAMD21G15B-AU

Mouser Part #
556-ATSAMD21G15B-AU

Microchip Technology

ARM Microcontrollers - MCU 48TQFP,85C TEMP, GREEN, 3.3V, 48MHZ

Learn More

Datasheet

293In Stock

$3.70

$3.36

$3.04

Min.: 1
Mult.: 1

SAMD21

SMD/SMT

TQFP-48

ARM Cortex M0+

32 kB

32 bit

12 bit

48 MHz

38 I/O

4 kB

1.62 V

3.63 V

- 40 C

+ 85 C

AEC-Q100

Tray

ARM Microcontrollers - MCU CMO,QFN48,Ligthing,128KFlash,Trays, 105 C

ATSAMD21G17L-MN
Microchip Technology
1: $4.90
237In Stock

Mfr. Part #
ATSAMD21G17L-MN

Mouser Part #
556-ATSAMD21G17L-MN

Microchip Technology

ARM Microcontrollers - MCU CMO,QFN48,Ligthing,128KFlash,Trays, 105 C

Learn More

Datasheet

237In Stock

$4.90

$4.48

$4.05

Min.: 1
Mult.: 1

SAMD21

SMD/SMT

VQFN-48

ARM Cortex M0+

128 kB

32 bit

12 bit

48 MHz

38 I/O

16 kB

1.62 V

3.63 V

- 40 C

+ 105 C

AEC-Q100

Tray

ARM Microcontrollers - MCU 48TQFP,85C TEMP, GREEN, 3.3V, 48MHZ

ATSAMD21G16B-AU
Microchip Technology
1: $4.29
997Expected 2026-02-26

Mfr. Part #
ATSAMD21G16B-AU

Mouser Part #
556-ATSAMD21G16B-AU

Microchip Technology

ARM Microcontrollers - MCU 48TQFP,85C TEMP, GREEN, 3.3V, 48MHZ

Learn More

Datasheet

997Expected 2026-02-26

$4.29

$3.89

$3.53

Min.: 1
Mult.: 1

SAMD21

SMD/SMT

TQFP-48

ARM Cortex M0+

64 kB

32 bit

12 bit

48 MHz

38 I/O

8 kB

1.62 V

3.63 V

- 40 C

+ 85 C

AEC-Q100

Tray

ARM Microcontrollers - MCU 32QFN 105C, GREEN,1.6-3.6V,48MHz,T&R

ATSAMD21E16L-MNT
Microchip Technology
5,000: $3.58
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
ATSAMD21E16L-MNT

Mouser Part #
556-ATSAMD21E16L-MNT

Microchip Technology

ARM Microcontrollers - MCU 32QFN 105C, GREEN,1.6-3.6V,48MHz,T&R

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

$3.58

Min.: 5,000
Mult.: 5,000

Reel: 5,000

SAMD21

SMD/SMT

QFN-32

ARM Cortex M0+

64 kB

32 bit

12 bit

48 MHz

26 I/O

8 kB

1.62 V

3.63 V

- 40 C

+ 105 C

AEC-Q100

Reel

ARM Microcontrollers - MCU 32TQFP 125C, GREEN,1.6-3.6V,48MHz

ATSAMD21E17A-AFT
Microchip Technology
2,000: $4.08
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
ATSAMD21E17A-AFT

Mouser Part #
556-ATSAMD21E17A-AFT

Microchip Technology

ARM Microcontrollers - MCU 32TQFP 125C, GREEN,1.6-3.6V,48MHz

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

$4.08

Min.: 2,000
Mult.: 2,000

Reel: 2,000

SAMD21

SMD/SMT

TQFP-32

ARM Cortex M0+

128 kB

32 bit

12 bit

48 MHz

26 I/O

16 kB

1.62 V

3.63 V

- 40 C

+ 125 C

AEC-Q100

Reel

ARM Microcontrollers - MCU 32QFN 125C, GREEN,1.6-3.6V,48MHz

ATSAMD21E17A-MFT
Microchip Technology
5,000: $3.97
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
ATSAMD21E17A-MFT

Mouser Part #
556-ATSAMD21E17A-MFT

Microchip Technology

ARM Microcontrollers - MCU 32QFN 125C, GREEN,1.6-3.6V,48MHz

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

$3.97

Min.: 5,000
Mult.: 5,000

Reel: 5,000

SAMD21

SMD/SMT

QFN-32

ARM Cortex M0+

128 kB

32 bit

12 bit

48 MHz

26 I/O

16 kB

1.62 V

3.63 V

- 40 C

+ 125 C

AEC-Q100

Reel

ARM Microcontrollers - MCU CM0, TQFP 32 , 128KFlash, USB, Extended Temp 125C, T&R

ATSAMD21E17D-AFT
Microchip Technology
2,000: $4.08
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
ATSAMD21E17D-AFT

Mouser Part #
556-ATSAMD21E17D-AFT

Microchip Technology

ARM Microcontrollers - MCU CM0, TQFP 32 , 128KFlash, USB, Extended Temp 125C, T&R

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

$4.08

Min.: 2,000
Mult.: 2,000

Reel: 2,000

SAMD21

SMD/SMT

TQFP-32

ARM Cortex M0+

128 kB

32 bit

12 bit

48 MHz

16 kB

1.62 V

3.63 V

- 40 C

+ 125 C

AEC-Q100

Reel

ARM Microcontrollers - MCU CM0, QFN 32 , 128KFlash, USB, Extended Temp 125C, Tray

ATSAMD21E17D-MF
Microchip Technology
490: $3.88
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
ATSAMD21E17D-MF

Mouser Part #
556-ATSAMD21E17D-MF

Microchip Technology

ARM Microcontrollers - MCU CM0, QFN 32 , 128KFlash, USB, Extended Temp 125C, Tray

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

$3.88

Min.: 490
Mult.: 490

SAMD21

SMD/SMT

VQFN-32

ARM Cortex M0+

128 kB

32 bit

12 bit

48 MHz

26 I/O

16 kB

1.62 V

3.63 V

- 40 C

+ 125 C

AEC-Q100

Tray

ARM Microcontrollers - MCU CM0, QFN 32 , 128KFlash, USB, Extended Temp 125C, T&R

ATSAMD21E17D-MFT
Microchip Technology
5,000: $3.97
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
ATSAMD21E17D-MFT

Mouser Part #
556-ATSAMD21E17D-MFT

Microchip Technology

ARM Microcontrollers - MCU CM0, QFN 32 , 128KFlash, USB, Extended Temp 125C, T&R

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

$3.97

Min.: 5,000
Mult.: 5,000

Reel: 5,000

SAMD21

SMD/SMT

VQFN-32

ARM Cortex M0+

128 kB

32 bit

12 bit

48 MHz

16 kB

1.62 V

3.63 V

- 40 C

+ 125 C

AEC-Q100

Reel

ARM Microcontrollers - MCU CMO,TQFP32,Ligthing,128KFlash,Trays, Extended temp

ATSAMD21E17L-AF
Microchip Technology
1: $4.81
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
ATSAMD21E17L-AF

Mouser Part #
556-ATSAMD21E17L-AF

Microchip Technology

ARM Microcontrollers - MCU CMO,TQFP32,Ligthing,128KFlash,Trays, Extended temp

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

$4.81

$4.34

$3.95

Min.: 1
Mult.: 1

SAMD21

SMD/SMT

TQFP-32

ARM Cortex M0+

128 kB

32 bit

12 bit

48 MHz

26 I/O

16 kB

1.62 V

3.63 V

- 40 C

+ 125 C

AEC-Q100

Tray

SAM D21 Arm® Cortex®-M0+ Microcontrollers

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