Atmel Xplained Pro Evaluation Kit for the ATSAMD21J18A Microcontroller ATSAMD21-XPRO ATSAMD21-XPRO Data Sheet
Product codes
ATSAMD21-XPRO
190
Atmel | SMART SAM D21 [DATASHEET]
Atmel-42181C–SAM-D21_Datasheet–07/2014
Table 16-13. Prescaler Select
z
Bits 11:10 – 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
Bit 9 – CEN: Clock Enable
0: The BOD33 sampling clock is either disabled and stopped, or enabled but not yet stable.
1: The BOD33 sampling clock is either enabled and stable, or disabled but not yet stopped.
Writing a zero to this bit will stop the BOD33 sampling clock.
Writing a one to this bit will start the BOD33 sampling clock.
0: The BOD33 sampling clock is either disabled and stopped, or enabled but not yet stable.
1: The BOD33 sampling clock is either enabled and stable, or disabled but not yet stopped.
Writing a zero to this bit will stop the BOD33 sampling clock.
Writing a one to this bit will start the BOD33 sampling clock.
z
Bit 8 – MODE: Operation Mode
0: The BOD33 operates in continuous mode.
1: The BOD33 operates in sampling mode.
0: The BOD33 operates in continuous mode.
1: The BOD33 operates in sampling mode.
z
Bit 7 – Reserved
This bit is unused and reserved for future use. For compatibility with future devices, always write this bit to zero
when this register is written. This bit will always return zero when read.
This bit is unused and reserved for future use. For compatibility with future devices, always write this bit to zero
when this register is written. This bit will always return zero when read.
z
Bit 6 – RUNSTDBY: Run in Standby
0: The BOD33 is disabled in standby sleep mode.
1: The BOD33 is enabled in standby sleep mode.
0: The BOD33 is disabled in standby sleep mode.
1: The BOD33 is enabled in standby sleep mode.
z
Bit 5 – Reserved
This bit is unused and reserved for future use. For compatibility with future devices, always write this bit to zero
when this register is written. This bit will always return zero when read.
This bit is unused and reserved for future use. For compatibility with future devices, always write this bit to zero
when this register is written. This bit will always return zero when read.
PSEL[3:0]
Name
Description
0x0
DIV2
Divide clock by 2
0x1
DIV4
Divide clock by 4
0x2
DIV8
Divide clock by 8
0x3
DIV16
Divide clock by 16
0x4
DIV32
Divide clock by 32
0x5
DIV64
Divide clock by 64
0x6
DIV128
Divide clock by 128
0x7
DIV256
Divide clock by 256
0x8
DIV512
Divide clock by 512
0x9
DIV1K
Divide clock by 1024
0xA
DIV2K
Divide clock by 2048
0xB
DIV4K
Divide clock by 4096
0xC
DIV8K
Divide clock by 8192
0xD
DIV16K
Divide clock by 16384
0xE
DIV32K
Divide clock by 32768
0xF
DIV64K
Divide clock by 65536