| PartNumber | ATSAMC21G18A-MNT | ATSAMC21G18A-AUT | ATSAMC21G18A-ANT |
| Description | ARM Microcontrollers - MCU 48QFN,105C TEMP, GREEN, 5V, 48MHZ, T&R | ARM Microcontrollers - MCU 48TQFP,85C TEMP, GREEN, 5V, 48MHZ, T&R | ARM Microcontrollers - MCU 48TQFP,105C TEMP, GREEN, 5V, 48MHZ, T&R |
| Manufacturer | Microchip | Microchip | Microchip |
| Product Category | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU |
| RoHS | Y | Y | Y |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | VQFN-48 | TQFP-48 | TQFP-48 |
| Series | ATSAMC21 | ATSAMC21 | ATSAMC21 |
| Core | ARM Cortex M0+ | ARM Cortex M0+ | ARM Cortex M0+ |
| Data Bus Width | 32 bit | 32 bit | 32 bit |
| Maximum Clock Frequency | 48 MHz | 48 MHz | 48 MHz |
| Program Memory Size | 256 kB | 256 kB | 256 kB |
| Data RAM Size | 32 kB | 32 kB | 32 kB |
| ADC Resolution | 12 bit | 12 bit | 12 bit |
| Number of I/Os | 38 I/O | 38 I/O | 38 I/O |
| Operating Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V |
| Minimum Operating Temperature | - 40 C | - 40 C | - 40 C |
| Maximum Operating Temperature | + 105 C | + 85 C | + 105 C |
| Packaging | Reel | Reel | Reel |
| Product | MCU | MCU | MCU |
| Program Memory Type | Flash | Flash | Flash |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| Data RAM Type | SRAM | SRAM | SRAM |
| Interface Type | LIN, I2C, PMBus, Serial, SPI, USART | LIN, I2C, PMBus, Serial, SPI, USART | LIN, I2C, PMBus, Serial, SPI, USART |
| DAC Resolution | 10 bit | 10 bit | 10 bit |
| Number of ADC Channels | 14 Channel | 14 Channel | 14 Channel |
| Number of Timers/Counters | 5 Timer | - | 5 Timer |
| Processor Series | SAMC21G | SAM C21 | SAMC21G |
| Product Type | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU |
| Factory Pack Quantity | 4000 | 2500 | 2500 |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | Microcontrollers - MCU |
| Supply Voltage Max | 5.5 V | 5.5 V | 5.5 V |
| Supply Voltage Min | 2.7 V | 2.7 V | 2.7 V |
| Watchdog Timers | Watchdog Timer | Watchdog Timer | Watchdog Timer |
| Moisture Sensitive | - | Yes | - |