Atmel Xplained Pro Evaluation Kit ATSAMD20-XPRO ATSAMD20-XPRO Data Sheet
Product codes
ATSAMD20-XPRO
35
Atmel | SMART SAM D20 [DATASHEET]
Atmel-42129K–SAM-D20_datasheet–06/2014
11.
Peripherals Configuration Overview
The following table shows an overview of all the peripherals in the device. The IRQ Line column shows the interrupt
mapping, as described in
mapping, as described in
.
The AHB and APB clock indexes correspond to the bit in the AHBMASK and APBMASK (x = A, B or C) registers in the
Power Manager, while the Enabled at Reset column shows whether the peripheral clock is enabled at reset (Y) or not
(N). Refer to the Power Manager
Power Manager, while the Enabled at Reset column shows whether the peripheral clock is enabled at reset (Y) or not
(N). Refer to the Power Manager
,
registers for details.
The Generic Clock Index column corresponds to the value of the Generic Clock Selection ID bits in the Generic Clock
Control register (CLKCTRL.ID) in the Generic Clock Controller. Refer to the GCLK
Control register (CLKCTRL.ID) in the Generic Clock Controller. Refer to the GCLK
register description for
details.
The PAC Index column corresponds to the bit in the PACi (i = 0, 1 or 2) registers, while the Prot at Reset column shows
whether the peripheral is protected at reset (Y) or not (N). Refer to
whether the peripheral is protected at reset (Y) or not (N). Refer to
details.
The numbers in the Events User column correspond to the value of the User Multiplexer Selection bits in the User
Multiplexer register (USER.USER) in the Event System. See the
Multiplexer register (USER.USER) in the Event System. See the
register description and
The numbers in the Events Generator column correspond to the value of the Event Generator bits in the Channel register
(CHANNEL.EVGEN) in the Event System. See the
(CHANNEL.EVGEN) in the Event System. See the
register description and
Table 11-1.
Peripherals Configuration Overview
Peripheral
Name
Base
Address
IRQ
Line
AHB Clock
APB Clock
Generic Clock
PAC
Events
Index
Enabled
at Reset
at Reset
Index
Enabled
at Reset
at Reset
Index
Index
Prot at
Reset
User
Generator
AHB-APB
Bridge A
0x40000000
0
Y
PAC0
0x40000000
0
Y
PM
0x40000400
0
1
Y
1
N
SYSCTRL
0x40000800
1
2
Y
0: DFLL48M
reference
2
N
GCLK
0x40000C00
3
Y
3
N
WDT
0x40001000
2
4
Y
1
4
N
RTC
0x40001400
3
5
Y
2
5
N
1: CMP0/ALARM0
2: CMP1
3: OVF
4-11: PER0-7
EIC
0x40001800
NMI,
4
6
Y
3
6
N
12-27: EXTINT0-15
AHB-APB
Bridge B
0x41000000
1
Y
PAC1
0x41000000
0
Y
DSU
0x41002000
3
Y
1
Y
1
Y
NVMCTRL
0x41004000
5
4
Y
2
Y
2
N
PORT
0x41004400
3
Y
3
N
AHB-APB
Bridge C
0x42000000
2
Y
PAC2
0x42000000
0
N
EVSYS
0x42000400
6
1
N
4-11: one per
CHANNEL
1
N
SERCOM0
0x42000800
7
2
N
13: CORE
12: SLOW
12: SLOW
2
N
SERCOM1
0x42000C00
8
3
N
14: CORE
12: SLOW
12: SLOW
3
N
SERCOM2
0x42001000
9
4
N
15: CORE
12: SLOW
12: SLOW
4
N
SERCOM3
0x42001400
10
5
N
16: CORE
12: SLOW
12: SLOW
5
N