Atmel SAM D21 ARM Cortex-M0+ processor with USB
Atmel’s SAM D21 ARM Cortex-M0+ processor is upwards compatible from the SAM D20 and adds features such as full-speed USB, DMA and high-end timers/counters.
- Low Power – peripherals can communicate without involving the CPU
- Software-configurable serial communication module to handle I2C, USART/UART and SPI communications
- 8-channel DMA controller supporting both memory and peripheral data transfers
- Full-Speed USB —both USB embedded Host and USB Device modes supported
Product Description
Atmel’s SAM D21 ARM Cortex-M0+ processor is upwards compatible from the SAM D20 and adds features such as full-speed USB, DMA and high-end timers/counters.
The SAM D family is designed for easy migration within the Atmel MCU portfolio. It consists of four pin- and code-compatible product series and a total of 35 different microcontrollers.
They all use the same processor, bus matrix, interrupt system and other core features. The main variations between each family member are in pin counts, memories and peripheral mix.
It sets a new benchmark for flexibility and ease-of-use, while combining the performance and energy efficiency of an ARM Cortex-M0+ based MCU with an optimised architecture and peripheral set.
Atmel | SMART SAM D products give you a truly differentiated general-purpose microcontroller that is ideal for many low-power, cost-sensitive industrial and consumer applications.
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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ATSAMD21E17A-MU
|
2423712 |
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
|
486 in stock + Check Stock & Lead Times 486 in stock for next day delivery (UK stock)
More stock available week commencing 23/03/26 |
Each
|
1+ £2.13 £2.56 25+ £1.93 £2.32 100+ £1.87 £2.24 490+ £1.81 £2.17 |
Restricted Item
Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Min: 1
Mult:
1
|
SAM 32 Family SAM D21 Series Microcontrollers | ARM Cortex-M0+ | 32 bit | 48MHz | 128KB | 32Pins | QFN | 26I/O's | I2C, LIN, SPI, USART | 16KB | 10Channels | 12Bit | 1.62V | 3.63V | -40°C | 85°C | Surface Mount | SAM32 | SAM D2X | - | |
ATSAMD21J16A-MU
|
2409251 |
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 | 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-MU
|
2409254 |
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
|
470 in stock + Check Stock & Lead Times 470 in stock for next day delivery (UK stock)
More stock available week commencing 23/03/26 |
Each
|
1+ £3.16 £3.79 25+ £2.82 £3.38 100+ £2.75 £3.30 250+ £2.68 £3.22 |
Restricted Item
Minimum order of 1 items Multiples of 1 only Please enter a valid quantity 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 | - | |
ATSAMD21G17A-AU
|
2423715 |
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
|
366 in stock + Check Stock & Lead Times 366 in stock for next day delivery (UK stock)
More stock available week commencing 06/04/26 |
Each
|
1+ £2.18 £2.62 25+ £1.99 £2.39 100+ £1.80 £2.16 250+ £1.66 £1.99 |
Restricted Item
Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Min: 1
Mult:
1
|
SAM 32 Family SAM D21 Series Microcontrollers | ARM Cortex-M0+ | 32 bit | 48MHz | 128KB | 48Pins | TQFP | 38I/O's | I2C, LIN, SPI, USART | 16KB | 14Channels | 12Bit | 1.62V | 3.63V | -40°C | 85°C | Surface Mount | SAM32 | SAM D2X | - | |
|
ATSAMD21G16A-AU
|
2409246 |
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 | 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 | - | ||
ATSAMD21E17A-AU
|
2423713 |
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
|
788 in stock + Check Stock & Lead Times 788 in stock for next day delivery (UK stock)
More stock available week commencing 13/04/26 |
Each
|
1+ £1.75 £2.10 25+ £1.60 £1.92 100+ £1.55 £1.86 250+ £1.50 £1.80 |
Restricted Item
Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Min: 1
Mult:
1
|
SAM 32 Family SAM D21 Series Microcontrollers | ARM Cortex-M0+ | 32 bit | 48MHz | 128KB | 32Pins | TQFP | 26I/O's | I2C, LIN, SPI, USART | 16KB | 10Channels | 12Bit | 1.62V | 3.63V | -40°C | 85°C | Surface Mount | SAM32 | SAM D2X | - | |
ATSAMD21G18A-AU
|
2409248 |
MCU, 32BIT, CORTEX-M0+, 48MHZ, TQFP-48 MICROCHIP
You previously purchased this product.
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|
21,199 in stock + Check Stock & Lead Times 21,199 in stock for next day delivery (UK stock)
More stock available week commencing 23/03/26 |
Each
|
1+ £3.07 £3.68 25+ £2.79 £3.35 100+ £2.53 £3.04 250+ £2.48 £2.98 |
Restricted Item
Minimum order of 1 items Multiples of 1 only Please enter a valid quantity 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 | - | |
ATSAMD21J16A-AU
|
2409250 |
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 | 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 | - | ||
|
ATSAMD21J18A-AU
|
2409253 |
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
|
932 in stock + Check Stock & Lead Times 932 in stock for next day delivery (UK stock)
More stock available week commencing 23/03/26 |
Each
|
1+ £3.25 £3.90 25+ £2.96 £3.55 100+ £2.84 £3.41 250+ £2.72 £3.26 |
Restricted Item
Minimum order of 1 items Multiples of 1 only Please enter a valid quantity 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 | - | |
|
ATSAMD21J17A-AU
|
2423718 |
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
|
1,010 in stock + Check Stock & Lead Times 1,010 in stock for next day delivery (UK stock)
More stock available week commencing 06/04/26 |
Each
|
1+ £2.31 £2.77 25+ £2.28 £2.74 100+ £2.25 £2.70 250+ £2.22 £2.66 |
Restricted Item
Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Min: 1
Mult:
1
|
SAM 32 Family SAM D21 Series Microcontrollers | ARM Cortex-M0+ | 32 bit | 48MHz | 128KB | 64Pins | TQFP | 52I/O's | I2C, LIN, SPI, USART | 16KB | 20Channels | 12Bit | 1.62V | 3.63V | -40°C | 85°C | Surface Mount | SAM32 | SAM D2X | - | |
ATSAMD21-XPRO
|
2407175 |
Evaluation Kit, SAM D21 ARM® Cortex®-M0+ MCU, Mechanical Buttons, On-Board Debugger MICROCHIP
You previously purchased this product.
View in Order History
|
Available for back order + Check Stock & Lead TimesMore stock available week commencing 18/05/26 Contact me when back in stock |
Each
|
1+ £30.07 £36.08 |
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1
|
- | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | |
|
ATSAMD21E18A-AU
|
2409244 |
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
|
1,263 in stock + Check Stock & Lead Times 1,263 in stock for next day delivery (UK stock)
More stock available week commencing 13/04/26 |
Each
|
1+ £2.94 £3.53 25+ £2.91 £3.49 100+ £2.88 £3.46 250+ £2.85 £3.42 |
Restricted Item
Minimum order of 1 items Multiples of 1 only Please enter a valid quantity 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 | - | |
|
ATSAMD21J17A-MU
|
2423717 |
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 | SAM 32 Family SAM D21 Series Microcontrollers | ARM Cortex-M0+ | 32 bit | 48MHz | 128KB | 64Pins | QFN | 52I/O's | I2C, LIN, SPI, USART | 16KB | 20Channels | 12Bit | 1.62V | 3.63V | -40°C | 85°C | Surface Mount | SAM32 | SAM D2X | - | ||
|
ATSAMD21E16A-MU
|
2409243 |
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 | 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 | - | ||
ATSAMD21G16A-MU
|
2409247 |
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 | 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 | - | ||
|
ATSAMD21G17A-MU
|
2423714 |
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
|
416 in stock + Check Stock & Lead Times 416 in stock for next day delivery (UK stock)
More stock available week commencing 13/04/26 |
Each
|
1+ £2.21 £2.65 25+ £2.02 £2.42 100+ £1.86 £2.23 416+ £1.85 £2.22 |
Restricted Item
Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Min: 1
Mult:
1
|
SAM 32 Family SAM D21 Series Microcontrollers | ARM Cortex-M0+ | 32 bit | 48MHz | 128KB | 48Pins | QFN | 38I/O's | I2C, LIN, SPI, USART | 16KB | 14Channels | 12Bit | 1.62V | 3.63V | -40°C | 85°C | Surface Mount | SAM32 | SAM D2X | - | |
|
ATSAMD21E16A-AU
|
2409242 |
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 | 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 | - | ||
|
ATSAMD21E18A-MU
|
2409245 |
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 | 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 | - | ||
|
ATSAMD21G18A-MU
|
2409249 |
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
|
1,495 in stock + Check Stock & Lead Times 1,495 in stock for next day delivery (UK stock)
More stock available week commencing 23/03/26 |
Each
|
1+ £3.02 £3.62 25+ £2.74 £3.29 100+ £2.72 £3.26 416+ £2.70 £3.24 |
Restricted Item
Minimum order of 1 items Multiples of 1 only Please enter a valid quantity 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 | - |