Signal Descriptions List

The following table gives details on signal names classified by peripheral.

Table 1. Signal Descriptions List
Signal Name Function Type Active Level
Analog Comparators - AC
AIN[3:0] AC Analog Inputs Analog  
CMP[1:0] AC Analog Output Analog  
Analog Digital Converter - ADC
AIN[19:0] ADC Analog Inputs Analog  
VREFA ADC Voltage External Reference A Analog  
VREFB ADC Voltage External Reference B Analog  
External Interrupt Controller - EIC
EXTINT[15:0] External Interrupts inputs Digital  
NMI External Non-Maskable Interrupt input Digital  
Generic Clock Generator - GCLK
GCLK_IO[4:0] 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  
32KHz Oscillators Control - OSC32KCTRL
XIN32 32KHz Crystal or external clock Input Analog/Digital  
XOUT32 32KHz 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[7:0] PTC Input/Output Analog  
Y[23:0] PTC Input/Output Analog  
X[31:24] PTC Output 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  
PB09 - PB00 Parallel I/O Controller I/O Port B Digital  
PB25 - PB11 Parallel I/O Controller I/O Port B Digital  
PB31 - PB30 Parallel I/O Controller I/O Port B Digital  
PC03 - PC00 Parallel I/O Controller I/O Port C Digital  
PC07 - PC05 Parallel I/O Controller I/O Port C Digital  
PC17 - PC12 Parallel I/O Controller I/O Port C Digital  
PC28 - PC24 Parallel I/O Controller I/O Port C Digital  
General Purpose input - PORT
PC11 - PC08 Parallel I/O Controller input Port C Digital  
PC21 - PC18 Parallel I/O Controller input Port C Digital  
Segment LCD
SLCD51 - SLCD00 Segment LCD Analog  
VLCD Bias Voltage Analog  
Universal Serial Bus - USB
DP DP for USB Digital  
DM DM for USB Digital  
SOF 1kHz USB Start of Frame Digital  
Real Timer Clock - RTC
RTC_IN[4:0] Tamper or external wake-up pins Digital  
RTC_OUT Tamper output Digital