Acronyms and Abbreviations

The below table contains acronyms and abbreviations used in this document.

Table 1. Acronyms and Abbreviations
Abbreviation Description
AC Analog Comparator
ADC Analog-to-Digital Converter
ADDR Address
AES Advanced Encryption Standard
AHB Advanced High-performance Bus
AMBA Advanced Microcontroller Bus Architecture
APB AMBA Advanced Peripheral Bus
AREF Analog Reference Voltage
BOD Brown-out Detector
CAL Calibration
CC Compare/Capture
CCL Configurable Custom Logic
CLK Clock
CRC Cyclic Redundancy Check
CTRL Control
DAC Digital-to-Analog Converter
DAP Debug Access Port
DFLL Digital Frequency Locked Loop
DPLL Digital Phase Locked Loop
DMAC DMA (Direct Memory Access) Controller
DSU Device Service Unit
EEPROM Electrically Erasable Programmable Read-Only Memory
EIC External Interrupt Controller
EVSYS Event System
FDPLL Fractional Digital Phase Locked Loop, also DPLL
FREQM Frequency Meter
GCLK Generic Clock Controller
GND Ground
GPIO General Purpose Input/Output
I2C Inter-Integrated Circuit
IF Interrupt Flag
INT Interrupt
MBIST Memory Built-In Self-Test
MEM-AP Memory Access Port
MTB Micro Trace Buffer
NMI Non-maskable Interrupt
NVIC Nested Vector Interrupt Controller
NVM Nonvolatile Memory
NVMCTRL Nonvolatile Memory Controller
OPAMP Operation Amplifier
OSC Oscillator
PAC Peripheral Access Controller
PC Program Counter
PER Period
PM Power Manager
POR Power-on Reset
PORT I/O Pin Controller
PTC Peripheral Touch Controller
PWM Pulse-Width Modulation
RAM Random-Access Memory
REF Reference
RTC Real-Time Counter
RX Receiver/Receive
SERCOM Serial Communication Interface
SMBus System Management Bus
SP Stack Pointer
SPI Serial Peripheral Interface
SRAM Static Random Access Memory
SUPC Supply Controller
SWD Serial Wire Debug
TC Timer/Counter
TRNG True Random Number Generator
TX Transmitter/Transmit
ULP Ultra Low-Power
USART Universal Synchronous and Asynchronous Serial Receiver and Transmitter
VDD Common voltage to be applied to VDDIO and VDDANA
VDDIO Digital Supply Voltage
VDDANA Analog Supply Voltage
VREF Voltage Reference
WDT Watchdog Timer
XOSC Crystal Oscillator