SAMD21G in SAM Microcontrollers Family
The SAMD21G family, manufactured by Microchip Technology, is a series of low-power 32-bit microcontrollers based on the ARM Cortex-M0+ processor. Operating at frequencies up to 48MHz, these MCUs bridge the gap between 8-bit and high-performance 32-bit systems. They are widely recognized for their integration of native USB support and flexible serial communication peripherals, making them a staple in both professional industrial designs and popular open-source development ecosystems like Arduino.
Variants in This Sub-Family
Comparing specs that differ across variants.
| Part Number | Package | Temp Range | Stock |
|---|---|---|---|
| ATSAMD21G18A-AU (Microchip Technology) | TQFP-48 | -40degC ~ 85degC (.. | 8,119 |
| ATSAMD21G18A-AUT (Microchip Technology) | TQFP-48 | -40degC ~ 85degC (.. | 2,675 |
| ATSAMD21G18A (Microchip Technology) | VFQFN-48 | -40degC ~ 85degC (.. | 2,131 |
| ATSAMD21G18A-AFT (Microchip Technology) | TQFP-48 | -40degC ~ 125degC .. | 26,091 |
| ATSAMD21G18A-MU (Microchip Technology) | VFQFN-48 | -40degC ~ 85degC (.. | 1,624 |
| ATSAMD21G18A-MUT (Microchip Technology) | VFQFN-48 | -40degC ~ 85degC (.. | 4,133 |
| ATSAMD21G18A-MFT (Microchip Technology) | VFQFN-48 | -40degC ~ 125degC .. | 7,468 |
| SAMD21G18A-AU (Microchip Technology) | TQFP-48 | -40degC ~ 85degC (.. | 6,107 |
| SAMD21G18A (Microchip) | VFQFN-48 | -40degC ~ 85degC (.. | 1,743 |
| ATSAMD21G18A-AF (Microchip Technology) | TQFP-48 | -40degC ~ 125degC .. | 1,678 |
| ATSAMD21G18 (Microchip Technology) | VFQFN-48 | -40degC ~ 85degC (.. | 2,131 |
Variants within the SAMD21G sub-family primarily differ by their packaging, temperature ratings, and qualification levels. Common options include 48-pin TQFP and QFN packages to balance PCB assembly ease with footprint miniaturization. Suffixes like '-AU' or '-MU' denote the package type and industrial temperature range, while '-T' indicates tape-and-reel packaging. Some variants are specifically categorized for Functional Safety (FuSa) applications.
