Atmel Xplained Pro Evaluation Kit for the ATSAMD21J18A Microcontroller ATSAMD21-XPRO ATSAMD21-XPRO Data Sheet
Product codes
ATSAMD21-XPRO
122
Atmel | SMART SAM D21 [DATASHEET]
Atmel-42181C–SAM-D21_Datasheet–07/2014
15.8.5 APBB Clock Select
Name:
APBBSEL
Offset:
0x0A
Reset:
0x00
Property:
Write-Protected
z
Bits 7:3 – 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 2:0 – APBBDIV[2:0]: APBB Prescaler Selection
These bits define the division ratio of the APBB clock prescaler (2
These bits define the division ratio of the APBB clock prescaler (2
n
).
Table 15-9. APBB Prescaler Selection
Bit
7
6
5
4
3
2
1
0
APBBDIV[2:0]
Access
R
R
R
R
R
R/W
R/W
R/W
Reset
0
0
0
0
0
0
0
0
APBBDIV[2:0]
Name
Description
0x0
DIV1
Divide by 1
0x1
DIV2
Divide by 2
0x2
DIV4
Divide by 4
0x3
DIV8
Divide by 8
0x4
DIV16
Divide by 16
0x5
DIV32
Divide by 32
0x6
DIV64
Divide by 64
0x7
DIV128
Divide by 128