| PartNumber | ATSAMR21E16A-MF | ATSAMR21E16A-MU | ATSAMR21E16A-MFT |
| Description | RF Microcontrollers - MCU SAMR21 32pin 64K 125C | RF Microcontrollers - MCU SAMR21 32pin 64K | RF Microcontrollers - MCU SAMR21 32pin 64K T&R |
| Manufacturer | Microchip | Microchip | Microchip |
| Product Category | RF Microcontrollers - MCU | RF Microcontrollers - MCU | RF Microcontrollers - MCU |
| RoHS | Y | Y | Y |
| Packaging | Tray | Tray | Reel |
| Series | ATSAMR21 | ATSAMR21 | ATSAMR21 |
| Brand | Microchip Technology / Atmel | Microchip Technology / Atmel | Microchip Technology / Atmel |
| Moisture Sensitive | Yes | Yes | - |
| Product Type | RF Microcontrollers - MCU | RF Microcontrollers - MCU | RF Microcontrollers - MCU |
| Factory Pack Quantity | 490 | 490 | 5000 |
| Subcategory | Wireless & RF Integrated Circuits | Wireless & RF Integrated Circuits | Wireless & RF Integrated Circuits |
| Tradename | SMART | SMART | SMART |