| Base Product Number | ATSAMD20 |
| Category | Integrated Circuits (ICs) |
| Connectivity | I?C, SPI, UART/USART |
| Core Processor | ARM? Cortex?-M0+ |
| Core Size | 32-Bit Single-Core |
| Data Converters | A/D 20x12b; D/A 1x10b |
| EEPROM Size | - |
| Mfr | Microchip Technology |
| Mounting Type | Surface Mount |
| Number of I/O | 52 |
| Operating Temperature | -40?C ~ 85?C (TA) |
| Oscillator Type | Internal |
| Package | Tray |
| Package / Case | 64-VFQFN Exposed Pad |
| Part Status | Active |
| Peripherals | Brown-out Detect/Reset, POR, WDT |
| Program Memory Size | 16KB (16K x 8) |
| Program Memory Type | FLASH |
| RAM Size | 2K x 8 |
| Series | SAM D20J |
| Speed | 48MHz |
| Supplier Device Package | 64-QFN (9x9) |
| Voltage - Supply (Vcc/Vdd) | 1.62V ~ 3.6V |