Atmel Xplained Pro Evaluation Kit ATSAMD20-XPRO ATSAMD20-XPRO Data Sheet
Product codes
ATSAMD20-XPRO
171
Atmel | SMART SAM D20 [DATASHEET]
Atmel-42129K–SAM-D20_datasheet–06/2014
16.8.14 3.3V Brown-Out Detector (BOD33) Control
Name:
BOD33
Offset:
0x34
Reset:
0x00XX00XX
Property:
Synchronized, Write-Protected
z
Bits 31:22 – Reserved
These bits are unused and reserved for future use. For compatibility with future devices, always write these bits to
zero when this register is written. These bits will always return zero when read.
These bits are unused and reserved for future use. For compatibility with future devices, always write these bits to
zero when this register is written. These bits will always return zero when read.
z
Bits 21:16 – LEVEL[5:0]: BOD33 Threshold Level
This field sets the triggering voltage threshold for the BOD33. See the
This field sets the triggering voltage threshold for the BOD33. See the
actual voltage levels. Note that any change to the LEVEL field of the BOD33 register should be done when the
BOD33 is disabled in order to avoid spurious resets or interrupts.
BOD33 is disabled in order to avoid spurious resets or interrupts.
These bits are loaded from Flash User Row at startup. Refer to
for more details.
z
Bits 15:12 – PSEL[3:0]: Prescaler Select
Selects the prescaler divide-by output for the BOD33 sampling mode, as given in
Selects the prescaler divide-by output for the BOD33 sampling mode, as given in
. The input clock
comes from the OSCULP32K 1kHz output.
Bit
31
30
29
28
27
26
25
24
Access
R
R
R
R
R
R
R
R
Reset
0
0
0
0
0
0
0
0
Bit
23
22
21
20
19
18
17
16
LEVEL[5:0]
Access
R
R
R/W
R/W
R/W
R/W
R/W
R/W
Reset
0
0
X
X
X
X
X
X
Bit
15
14
13
12
11
10
9
8
PSEL[3:0]
CEN
MODE
Access
R/W
R/W
R/W
R/W
R
R
R/W
R/W
Reset
0
0
0
0
0
0
0
0
Bit
7
6
5
4
3
2
1
0
RUNSTDBY
ACTION[1:0]
HYST
ENABLE
Access
R
R/W
R
R/W
R/W
R/W
R/W
R
Reset
0
0
0
X
X
X
X
0