Data Sheet

1057
Atmel | SMART SAM D21 [DATASHEET]
Atmel-42181G–SAM-D21_Datasheet–09/2015
DAC Digital to Analog converter
DFLL Digital Frequency Locked Loop
DSU Device service unit
EEPROM Electrically Erasable Programmable Read-Only Memory
EIC External interrupt controller
EVSYS Event System
GCLK Generic clock
GND Ground
GPIO General Purpose Input/Output
I
2
C Inter-integrated circuit
IF Interrupt Flag
INT Interrupt
IOBUS I/O Bus
NMI Non-Maskable Interrupt
NVIC Nested vector interrupt controller
NVMCTRL Non-Volatile Memory controller
OSC Oscillator
PAC Peripheral access controller
PC Program counter
PER Period
PM Power manager
POR Power-on reset
PTC Peripheral touch controller
PWM Pulse Width Modulation
RAM Random-access memory
REF Reference
RMW Read-modify-write
RTC Real-time counter
RX Receiver
SERCOM Serial communication interface
SMBus System Management Bus
SP Stack Pointer
SPI Serial peripheral interface
Table 40-5. Acronyms and Abbreviations (Continued)
Abbreviation Description