Atmel Xplained Pro Evaluation Kit for the ATSAMD21J18A Microcontroller ATSAMD21-XPRO ATSAMD21-XPRO Data Sheet
Product codes
ATSAMD21-XPRO
1005
Atmel | SMART SAM D21 [DATASHEET]
Atmel-42181C–SAM-D21_Datasheet–07/2014
SPI
Serial peripheral interface
SRAM
Static random-access memory
SYSCTRL
System controller
SWD
Single-wire debug
TC
Timer/Counter
TX
Transmitter
ULP
Ultra Low Power
USART
Universal synchronous and asynchronous serial receiver and transmitter
V
DD
Digital supply voltage
VREF
Voltage reference
WDT
Watchdog timer
XOSC
Crystal oscillator
XTAL
Crystal
Table 40-5. Acronyms and Abbreviations (Continued)
Abbreviation
Description