| Series | SAM D21J, Functional Safety (FuSa) |
| Package | Tape & Reel (TR)Cut Tape (CT)Digi-Reel® |
| Part Status | Active |
| Core Processor | ARM® Cortex®-M0+ |
| Core Size | 32-Bit |
| Speed | 48MHz |
| Connectivity | I²C, LINbus, SPI, UART/USART, USB |
| Peripherals | Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT |
| Number of I/O | 52 |
| Program Memory Size | 32KB (32K x 8) |
| Program Memory Type | FLASH |
| EEPROM Size | - |
| RAM Size | 4K x 8 |
| Voltage - Supply (Vcc/Vdd) | 1.62V ~ 3.6V |
| Data Converters | A/D 20x12b; D/A 1x10b |
| Oscillator Type | Internal |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount |
| Package / Case | 64-VFQFN Exposed Pad |
| Supplier Device Package | 64-QFN (9x9) |
