| Data Bus Width (bit) |
32 |
| Series name |
SAM D21 |
| Device Core |
ARM Cortex M0+ |
| Instruction Set Architecture |
RISC |
| Maximum Clock Rate (MHz) |
48 |
| Program Memory Type |
Flash |
| Program Memory Size |
256KB |
| RAM Size |
32KB |
| Maximum CPU Frequency (MHz) |
48 |
| DMA Channels |
12 |
| Direct Memory Access |
yes |
| Floating Point Unit |
no |
| Bluetooth |
no |
| Wi-Fi |
no |
| Multiply Accumulate |
no |
| Internal/External Clock Type |
External |
| Touch Sensing Interface |
no |
| Power On Reset |
yes |
| Memory Protection Unit |
yes |
| Temperature Sensor |
yes |
| DDR |
no |
| Memory Management Unit |
no |
| Integrated Development Environment |
no |
| Super Scalar |
no |
| External Bus Interface |
no |
| Number of Programmable I/Os |
38 |
| Number of Timers |
6 |
| ADC Channels |
14 |
| DAC Channels |
1 |
| ADC Resolution (bit) |
12 |
| Number of ADCs |
Single |
| Core Architecture |
ARM |
| Number of DACs |
Single |
| DAC Resolution (bit) |
10 |
| PWM |
1 |
| Watchdog |
1 |
| Analog Comparators |
2 |
| Parallel Master Port |
no |
| Real Time Clock |
yes |
| Interface Type |
I2C/I2S/SPI/USART/USB |
| Programmability |
yes |
| SPI |
6 |
| I2C |
6 |
| I2S |
1 |
| UART |
0 |
| USART |
6 |
| CAN |
0 |
| USB |
1 |
| Ethernet |
0 |
| Minimum Operating Supply Voltage (V) |
1.62 |
| Typical Operating Supply Voltage (V) |
3.3 |
| Maximum Operating Supply Voltage (V) |
3.63 |
| Minimum Operating Temperature (°C) |
-40 |
| Maximum Operating Temperature (°C) |
85 |
| Temperature Flag |
Opr |
| Operating Supply Voltage (V) |
3.3 |
| Maximum Storage Temperature (°C) |
150 |
| Minimum Storage Temperature (°C) |
-60 |
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