Atmel Xplained Pro Evaluation Kit for the ATSAMD21J18A Microcontroller ATSAMD21-XPRO ATSAMD21-XPRO Data Sheet
Product codes
ATSAMD21-XPRO
28
Atmel | SMART SAM D21 [DATASHEET]
Atmel-42181C–SAM-D21_Datasheet–07/2014
is generated from the peripheral when the interrupt flag is set and the corresponding interrupt is enabled. The interrupt
requests for one peripheral are ORed together on system level, generating one interrupt request for each peripheral. An
interrupt request will set the corresponding interrupt pending bit in the NVIC interrupt pending registers
(SETPEND/CLRPEND bits in ISPR/ICPR). For the NVIC to activate the interrupt, it must be enabled in the NVIC interrupt
enable register (SETENA/CLRENA bits in ISER/ICER). The NVIC interrupt priority registers IPR0-IPR7 provide a priority
field for each interrupt.
requests for one peripheral are ORed together on system level, generating one interrupt request for each peripheral. An
interrupt request will set the corresponding interrupt pending bit in the NVIC interrupt pending registers
(SETPEND/CLRPEND bits in ISPR/ICPR). For the NVIC to activate the interrupt, it must be enabled in the NVIC interrupt
enable register (SETENA/CLRENA bits in ISER/ICER). The NVIC interrupt priority registers IPR0-IPR7 provide a priority
field for each interrupt.
Peripheral Source
NVIC Line
EIC NMI – External Interrupt Controller
NMI
PM – Power Manager
0
SYSCTRL – System Control
1
WDT – Watchdog Timer
2
RTC – Real Time Counter
3
EIC – External Interrupt Controller
4
NVMCTRL – Non-Volatile Memory Controller
5
DMAC - Direct Memory Access Controller
6
USB - Universal Serial Bus
7
EVSYS – Event System
8
SERCOM0 – Serial Communication Interface 0
9
SERCOM1 – Serial Communication Interface 1
10
SERCOM2 – Serial Communication Interface 2
11
SERCOM3 – Serial Communication Interface 3
12
SERCOM4 – Serial Communication Interface 4
13
SERCOM5 – Serial Communication Interface 5
14
TCC0 – Timer Counter for Control 0
15
TCC1 – Timer Counter for Control 1
16
TCC2 – Timer Counter for Control 2
17
TC3 – Timer Counter 3
18
TC4 – Timer Counter 4
19
TC5 – Timer Counter 5
20
TC6 – Timer Counter 6
21
TC7 – Timer Counter 7
22
ADC – Analog-to-Digital Converter
23
AC – Analog Comparator
24
DAC – Digital-to-Analog Converter
25
PTC – Peripheral Touch Controller
26
I2S - Inter IC Sound
27