6 Signal Descriptions List
The following table provides details on signal names classified by peripheral.
| Signal Name | Function | Type | Active Level |
|---|---|---|---|
| Analog Comparators (AC) | |||
| AIN[3:0] | AC Analog Inputs | Analog | |
| CMP[1:0] | AC Comparator Outputs | Digital | |
| Analog-to- Digital Converter (ADC) | |||
| AIN[19:0] | ADC Analog Inputs | Analog | |
| VREFA | ADC Voltage External Reference A | Analog | |
| VREFB | ADC Voltage External Reference B | Analog | |
| Digital-to-Analog Converter (DAC) | |||
| VOUT[1:0] | DAC Voltage output | Analog | |
| VREFA | DAC Voltage External Reference | Analog | |
| Operational Amplifier (OPAMP) | |||
| OANEG[2:0] | OPAMP Analog Negative Inputs | Analog | |
| OAPOS[2:0] | OPAMP Analog Positive Inputs | Analog | |
| OAOUT[2:0] | OPAMP Analog outputs | Analog | |
| External Interrupt Controller (EIC) | |||
| EXTINT[15:0] | External Interrupts inputs | Digital | |
| NMI | External Non-Maskable Interrupt input | Digital | |
| Reset Controller (RSTC) | |||
| EXTWAKE[7:0] | External wake-up inputs | Digital | |
| Generic Clock Generator (GCLK) | |||
| GCLK_IO[7:0] | Generic Clock (source clock inputs or generic clock generator output) | Digital | |
| Custom Control Logic (CCL) | |||
| IN[11:0] | Logic Inputs | Digital | |
| OUT[3:0] | Logic Outputs | Digital | |
| Supply Controller (SUPC) | |||
| VBAT | External battery supply Inputs | Analog | |
| PSOK | Main Power Supply OK input | Digital | |
| OUT[1:0] | Logic Outputs | Digital | |
| Power Manager (PM) | |||
| RESETN | Reset input | Digital | Low |
| Serial Communication Interface (SERCOMx) | |||
| PAD[3:0] | SERCOM Inputs/Outputs Pads | Digital | |
| Oscillators Control (OSCCTRL) | |||
| XIN | Crystal or external clock Input | Analog/Digital | |
| XOUT | Crystal Output | Analog | |
| 32 kHz Oscillators Control (OSC32KCTRL) | |||
| XIN32 | 32 kHz Crystal or external clock Input | Analog/Digital | |
| XOUT32 | 32 kHz Crystal Output | Analog | |
| Timer Counter (TCx) | |||
| WO[1:0] | Waveform Outputs | Digital | |
| Timer Counter (TCCx) | |||
| WO[7:0] | Waveform Outputs | Digital | |
| Peripheral Touch Controller (PTC) | |||
| X[15:0] | PTC Input | Analog | |
| Y[15:0] | PTC Input | Analog | |
| General Purpose I/O (PORT) | |||
| PA25 - PA00 | Parallel I/O Controller I/O Port A | Digital | |
| PA27 | Parallel I/O Controller I/O Port A | Digital | |
| PA31 - PA30 | Parallel I/O Controller I/O Port A | Digital | |
| PB17 - PB00 | Parallel I/O Controller I/O Port B | Digital | |
| PB23 - PB22 | Parallel I/O Controller I/O Port B | Digital | |
| PB31 - PB30 | Parallel I/O Controller I/O Port B | Digital | |
| Universal Serial Bus (USB) | |||
| DP | DP for USB | Digital | |
| DM | DM for USB | Digital | |
| SOF 1 kHz | USB Start of Frame | Digital | |