| SAM C20J | SAM C20G | SAM C20E | |
|---|---|---|---|
| Pins | 64 (56 for WLCSP) | 48 | 32 |
| General Purpose I/O-pins (GPIOs) | 52 | 38 | 26 |
| Flash | 256/128/64/32KB | 256/128/64/32KB | 256/128/64/32KB |
| Flash RWW section | 8/4/2/1KB | 8/4/2/1KB | 8/4/2/1KB |
| System SRAM | 32/16/8/4KB | 32/16/8/4KB | 32/16/8/4KB |
| Timer Counter (TC) instances | 5 | 5 | 5 |
| Waveform output channels per TC instance | 2 | 2 | 2 |
| Timer Counter for Control (TCC) instances | 3 | 3 | 3 |
| Waveform output channels per TCC | 8/4/2 | 8/4/2 | 6/4/2 |
| DMA channels | 6 | 6 | 6 |
| Configurable Custom Logic (CCL) (LUTs) | 4 | 4 | 4 |
| Serial Communication Interface (SERCOM) instances | 4 | 4 | 4 |
| Analog-to-Digital Converter (ADC) channels | 12 | 12 | 10 |
| Analog Comparators (AC) | 2 | 2 | 2 |
| Real-Time Counter (RTC) | Yes | Yes | Yes |
| RTC alarms | 1 | 1 | 1 |
| RTC compare values |
One 32-bit value or two 16-bit values |
One 32-bit value or two 16-bit values |
One 32-bit value or two 16-bit values |
| External Interrupt lines | 16 | 16 | 16 |
|
Peripheral Touch Controller (PTC) Number of self-capacitance channels (Y-lines) |
32 |
22 |
16 |
|
Peripheral Touch Controller (PTC) Number of mutual-capacitance channels (X x Y lines) |
256 (16x16) |
121 (11x11) |
64 (8x8) |
| Maximum CPU frequency | 48MHz | ||
| Packages |
QFN TQFP WLCSP |
QFN TQFP |
QFN TQFP |
| Oscillators |
32.768kHz crystal oscillator (XOSC32K) 0.4-32MHz crystal oscillator (XOSC) 32.768kHz internal oscillator (OSC32K) 32KHz ultra-low-power internal oscillator (OSCULP32K) 48MHz high-accuracy internal oscillator (OSC48M) 96MHz Fractional Digital Phased Locked Loop (FDPLL96M) |
||
| Event System channels | 6 | 6 | 6 |
| SW Debug Interface | Yes | Yes | Yes |
| Watchdog Timer (WDT) | Yes | Yes | Yes |