Atmel SAM D21 Xplained Pro

The Atmel SAM D21 is a series of low-power microcontrollers using the 32-bit ARM Cortex- M0+ processor.

SAMD21J18A microcontroller
USB interface device and reduced host mode
3 Xplained Pro extension headers
Embedded Debugger
Supported with application examples in Atmel Software Framework

Product Description

The Atmel SAM D21 is a series of low-power microcontrollers using the 32-bit ARM Cortex- M0+ processor and ranging from 32- to 64-pins with up to 256KB Flash and 32KB of SRAM.

The SAM D21 devices operate at a maximum frequency of 48MHz and reach 2.14 Coremark/MHz. They are designed for simple and intuitive migration with identical peripheral modules 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 Atmel Event System for inter-peripheral signaling and support for capacitive touch button slider and wheel user interfaces.

Debugging tool

The Xplained Pro MCU series evaluation kits include an on-board Embedded Debugger and no external tools are necessary to program or debug the ATSAMD21J18A.

Built-in features

In-system programmable Flash twelve-channel direct memory access (DMA) controller 12 channel Event System programmable interrupt controller up to 52 programmable I/O pins 32-bit real-time clock and calendar up to five 16-bit Timer/Counters (TC) and three 24-bit Timer/Counters for Control (TCC) where each TC can be configured to perform frequency and waveform generation accurate program execution timing or input capture with time and frequency measurement of digital signals.

Mechanical buttons

One reset button and one user pushbutton (wake-up bootloader entry or general purpose).

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Manufacturer Part No

Order Code

	Manufacturer Part No	Order Code	Manufacturer / Description	Availability	Price For	Price	Quantity	Silicon Manufacturer	No. of Bits	Silicon Family Name	Core Architecture	Core Sub-Architecture	Silicon Core Number	Kit Contents	Product Range
	ATSAMD21-XPRO	2407175 Data Sheet + RoHS	Evaluation Kit, SAM D21 ARM® Cortex®-M0+ MCU, Mechanical Buttons, On-Board Debugger MICROCHIP You previously purchased this product. View in Order History	9 in stock + Check Stock & Lead Times 9 in stock for next day delivery (UK stock) 7 more will be available week commencing 22/05/25 7 more will be available week commencing 02/07/25 3 more will be available week commencing 17/07/25 More stock available week commencing 18/08/25	Each	1+ £31.64 £37.97	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	Atmel	32bit	SAM D	ARM	Cortex-M0+	ATSAMD21J18A	Eval Board ATSAMD21J18A	-

Manufacturer / Description

Availability

Price For

Price

Quantity

Silicon Manufacturer

No. of Bits

Silicon Family Name

Core Architecture

Core Sub-Architecture

Silicon Core Number

Kit Contents

Product Range

ATSAMD21-XPRO

2407175

Data Sheet

RoHS

Evaluation Kit, SAM D21 ARM® Cortex®-M0+ MCU, Mechanical Buttons, On-Board Debugger

MICROCHIP

You previously purchased this product. View in Order History

9 in stock + Check Stock & Lead Times

Each

1+ £31.64 £37.97

Restricted Item

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Min: 1 Mult: 1

Atmel

32bit

SAM D

ARM

Cortex-M0+

ATSAMD21J18A

Eval Board ATSAMD21J18A

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Contract pricing display is unavailable at the moment. Prices shown are standard retail prices, orders placed will have contract pricing applied when processed.

Manufacturer Part No	Order Code	Manufacturer / Description	Availability	Price For	Price	Quantity	Silicon Manufacturer	Core Architecture	Core Sub-Architecture	Silicon Core Number	Silicon Family Name	For Use With	Kit Contents	Product Range
ATIO1-XPRO	2295529 Data Sheet + RoHS	Expansion Board, I/O1 Xplained Pro, For Xplained Pro, 2GB MicroSD Card, Temperature/Light sensor MICROCHIP You previously purchased this product. View in Order History	Available for back order + Check Stock & Lead Times More stock available week commencing 18/08/25 Contact me when back in stock	Each	3+ £47.46 £56.95	Restricted Item Minimum order of 3 items Multiples of 3 only Please enter a valid quantity Add Min: 3 Mult: 3	Atmel	-	AVR	-	-	Atmel Xplained Pro Platform	Extension Board Xplained Pro	-
ATOLED1-XPRO	2295527 Data Sheet + RoHS	Expansion Board, OLED1 Xplained Pro, OLED Display 128x32 (SPI), Auto-ID for Board Identification MICROCHIP You previously purchased this product. View in Order History	5 in stock + Check Stock & Lead Times 5 in stock for next day delivery (UK stock) More stock available week commencing 18/08/25	Each	1+ £22.94 £27.53	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	Atmel	-	AVR	-	-	Atmel Xplained Pro Platform	Extension Board Xplained Pro	-
ATPROTO1-XPRO	2295530 Data Sheet + RoHS	Expansion Board, PROTO1 Xplained Pro, Connects to Expansion Headers on Xplained Pro MCU Boards MICROCHIP You previously purchased this product. View in Order History	Available for back order + Check Stock & Lead Times More stock available week commencing 18/08/25 Contact me when back in stock	Each	1+ £26.47 £31.76	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	-	-	-	-	-	Xplained Pro MCU Boards	Extension Board Xplained Pro	-
ATQT1-XPRO	2399861 Data Sheet + RoHS	Xplained Pro Extension Board, SAMD20 MCU, Xplained Pro Hardware Identification System, MICROCHIP You previously purchased this product. View in Order History	Available for back order + Check Stock & Lead Times More stock available week commencing 18/08/25 Contact me when back in stock	Each	1+ £30.51 £36.61	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	Atmel	ARM	Cortex-M0+	-	SAMD20	SAMD20 MCU	Two Xplained Pro Boards	-

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Contract pricing display is unavailable at the moment. Prices shown are standard retail prices, orders placed will have contract pricing applied when processed.

Manufacturer Part No	Order Code	Manufacturer / Description	Availability	Price For	Price	Quantity	Product Range	Device Core	Data Bus Width	Operating Frequency Max	Program Memory Size	No. of Pins	IC Case / Package	No. of I/O's	Interfaces	RAM Memory Size	ADC Channels	ADC Resolution	Supply Voltage Min	Supply Voltage Max	Operating Temperature Min	Operating Temperature Max	IC Mounting	MCU Family	MCU Series	Qualification
ATSAMD21E16A-AU	2409242 Data Sheet + RoHS	ARM MCU, SAM D Series, SAM 32 Family SAM D21 Series Microcontrollers, ARM Cortex-M0+, 32 bit MICROCHIP You previously purchased this product. View in Order History	No Longer Manufactured	Each	null	Restricted Item	SAM 32 Family SAM D21 Series Microcontrollers	ARM Cortex-M0+	32 bit	48MHz	64KB	32Pins	TQFP	26I/O's	I2C, I2S, SPI, UART, USB	8KB	10Channels	12Bit	1.62V	3.63V	-40°C	85°C	Surface Mount	SAM32	SAM D2X	-
ATSAMD21E16A-MU	2409243 Data Sheet + RoHS	ARM MCU, SAM D Series, SAM 32 Family SAM D21 Series Microcontrollers, ARM Cortex-M0+, 32 bit MICROCHIP You previously purchased this product. View in Order History	No Longer Manufactured	Each	null	Restricted Item	SAM 32 Family SAM D21 Series Microcontrollers	ARM Cortex-M0+	32 bit	48MHz	64KB	32Pins	QFN	26I/O's	I2C, I2S, SPI, UART, USB	8KB	10Channels	12Bit	1.62V	3.63V	-40°C	85°C	Surface Mount	SAM32	SAM D2X	-
ATSAMD21E18A-AU	2409244 Data Sheet + RoHS Date/Lot Code	ARM MCU, SAM D Series, SAM 32 Family SAM D21 Series Microcontrollers, ARM Cortex-M0+, 32 bit MICROCHIP You previously purchased this product. View in Order History	1,377 in stock + Check Stock & Lead Times 1,377 in stock for next day delivery (UK stock) More stock available week commencing 30/06/25	Each	1+ £3.14 £3.77 25+ £3.04 £3.65 100+ £2.95 £3.54 250+ £2.85 £3.42	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	SAM 32 Family SAM D21 Series Microcontrollers	ARM Cortex-M0+	32 bit	48MHz	256KB	32Pins	TQFP	26I/O's	I2C, I2S, SPI, UART, USB	32KB	10Channels	12Bit	1.62V	3.63V	-40°C	85°C	Surface Mount	SAM32	SAM D2X	-
ATSAMD21E18A-MU	2409245 Data Sheet + RoHS	ARM MCU, SAM D Series, SAM 32 Family SAM D21 Series Microcontrollers, ARM Cortex-M0+, 32 bit MICROCHIP You previously purchased this product. View in Order History	No Longer Stocked	Each	null	Restricted Item	SAM 32 Family SAM D21 Series Microcontrollers	ARM Cortex-M0+	32 bit	48MHz	256KB	32Pins	QFN	26I/O's	I2C, I2S, SPI, UART, USB	32KB	10Channels	12Bit	1.62V	3.63V	-40°C	85°C	Surface Mount	SAM32	SAM D2X	-
ATSAMD21G16A-AU	2409246 + RoHS	ARM MCU, SAM D Series, SAM 32 Family SAM D21 Series Microcontrollers, ARM Cortex-M0+, 32 bit MICROCHIP You previously purchased this product. View in Order History	No Longer Manufactured	Each	null	Restricted Item	SAM 32 Family SAM D21 Series Microcontrollers	ARM Cortex-M0+	32 bit	48MHz	64KB	48Pins	TQFP	38I/O's	I2C, I2S, SPI, UART, USB	8KB	14Channels	12Bit	1.62V	3.63V	-40°C	85°C	Surface Mount	SAM32	SAM D2X	-
ATSAMD21G16A-MU	2409247 Data Sheet + RoHS	ARM MCU, SAM D Series, SAM 32 Family SAM D21 Series Microcontrollers, ARM Cortex-M0+, 32 bit MICROCHIP You previously purchased this product. View in Order History	No Longer Manufactured	Each	null	Restricted Item	SAM 32 Family SAM D21 Series Microcontrollers	ARM Cortex-M0+	32 bit	48MHz	64KB	48Pins	QFN	38I/O's	I2C, I2S, SPI, UART, USB	8KB	14Channels	12Bit	1.62V	3.63V	-40°C	85°C	Surface Mount	SAM32	SAM D2X	-
ATSAMD21G18A-AU	2409248 Data Sheet + RoHS Date/Lot Code	ARM MCU, SAM D Series, SAM 32 Family SAM D21 Series Microcontrollers, ARM Cortex-M0+, 32 bit MICROCHIP You previously purchased this product. View in Order History	22,608 in stock + Check Stock & Lead Times 22,608 in stock for next day delivery (UK stock) More stock available week commencing 09/06/25	Each	1+ £3.30 £3.96 25+ £3.15 £3.78 100+ £3.00 £3.60 250+ £2.85 £3.42	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	SAM 32 Family SAM D21 Series Microcontrollers	ARM Cortex-M0+	32 bit	48MHz	256KB	48Pins	TQFP	38I/O's	I2C, I2S, SPI, UART, USB	32KB	14Channels	12Bit	1.62V	3.63V	-40°C	85°C	Surface Mount	SAM32	SAM D2X	-
ATSAMD21G18A-MU	2409249 + RoHS	ARM MCU, SAM D Series, SAM 32 Family SAM D21 Series Microcontrollers, ARM Cortex-M0+, 32 bit MICROCHIP You previously purchased this product. View in Order History	1,347 in stock + Check Stock & Lead Times 1,347 in stock for next day delivery (UK stock) More stock available week commencing 09/06/25	Each	1+ £3.22 £3.86 25+ £3.08 £3.70 100+ £2.93 £3.52 416+ £2.70 £3.24	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	SAM 32 Family SAM D21 Series Microcontrollers	ARM Cortex-M0+	32 bit	48MHz	256KB	48Pins	QFN	38I/O's	I2C, I2S, SPI, UART, USB	32KB	14Channels	12Bit	1.62V	3.63V	-40°C	85°C	Surface Mount	SAM32	SAM D2X	-
ATSAMD21J16A-AU	2409250 Data Sheet + RoHS	ARM MCU, SAM D Series, SAM 32 Family SAM D21 Series Microcontrollers, ARM Cortex-M0+, 32 bit MICROCHIP You previously purchased this product. View in Order History	No Longer Manufactured	Each	null	Restricted Item	SAM 32 Family SAM D21 Series Microcontrollers	ARM Cortex-M0+	32 bit	48MHz	64KB	64Pins	TQFP	52I/O's	I2C, I2S, SPI, UART, USB	8KB	20Channels	12Bit	1.62V	3.63V	-40°C	85°C	Surface Mount	SAM32	SAM D2X	-
ATSAMD21J16A-MU	2409251 Data Sheet + RoHS	ARM MCU, SAM D Series, SAM 32 Family SAM D21 Series Microcontrollers, ARM Cortex-M0+, 32 bit MICROCHIP You previously purchased this product. View in Order History	No Longer Manufactured	Each	null	Restricted Item	SAM 32 Family SAM D21 Series Microcontrollers	ARM Cortex-M0+	32 bit	48MHz	64KB	64Pins	QFN	52I/O's	I2C, I2S, SPI, UART, USB	8KB	20Channels	12Bit	1.62V	3.63V	-40°C	85°C	Surface Mount	SAM32	SAM D2X	-
ATSAMD21J18A-AU	2409253 + RoHS Date/Lot Code	ARM MCU, SAM D Series, SAM 32 Family SAM D21 Series Microcontrollers, ARM Cortex-M0+, 32 bit MICROCHIP You previously purchased this product. View in Order History	1,528 in stock + Check Stock & Lead Times 1,528 in stock for next day delivery (UK stock) More stock available week commencing 09/06/25	Each	1+ £3.33 £4.00 25+ £3.01 £3.61 100+ £2.81 £3.37 250+ £2.79 £3.35	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	SAM 32 Family SAM D21 Series Microcontrollers	ARM Cortex-M0+	32 bit	48MHz	256KB	64Pins	TQFP	52I/O's	I2C, I2S, SPI, UART, USB	32KB	20Channels	12Bit	1.62V	3.63V	-40°C	85°C	Surface Mount	SAM32	SAM D2X	-
ATSAMD21J18A-MU	2409254 + RoHS Date/Lot Code	ARM MCU, SAM D Series, SAM 32 Family SAM D21 Series Microcontrollers, ARM Cortex-M0+, 32 bit MICROCHIP You previously purchased this product. View in Order History	130 in stock + Check Stock & Lead Times 130 in stock for next day delivery (UK stock) More stock available week commencing 09/06/25	Each	1+ £3.12 £3.74 25+ £2.80 £3.36 100+ £2.74 £3.29 250+ £2.68 £3.22	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	SAM 32 Family SAM D21 Series Microcontrollers	ARM Cortex-M0+	32 bit	48MHz	256KB	64Pins	QFN	52I/O's	I2C, I2S, SPI, UART, USB	32KB	20Channels	12Bit	1.62V	3.63V	-40°C	85°C	Surface Mount	SAM32	SAM D2X	-