Atmel Xplained Pro Evaluation Kit for the ATSAMD21J18A Microcontroller ATSAMD21-XPRO ATSAMD21-XPRO Data Sheet
Product codes
ATSAMD21-XPRO
847
Atmel | SMART SAM D21 [DATASHEET]
Atmel-42181C–SAM-D21_Datasheet–07/2014
32.8 Register Description
Registers can be 8, 16 or 32 bits wide. Atomic 8-, 16- and 32-bit accesses are supported. In addition, the 8-bit quarters
and 16-bit halves of a 32-bit register and the 8-bit halves of a 16-bit register can be accessed directly.
and 16-bit halves of a 32-bit register and the 8-bit halves of a 16-bit register can be accessed directly.
Some registers are optionally write-protected by the Peripheral Access Controller (PAC). Write-protection is denoted by
the Write-Protected property in each individual register description. Refer to
the Write-Protected property in each individual register description. Refer to
for details.
Some registers require synchronization when read and/or written. Synchronization is denoted by the Write-Synchronized
or the Read-Synchronized property in each individual register description. Refer to
or the Read-Synchronized property in each individual register description. Refer to
for
details.
Some registers are enable-protected, meaning they can be written only when the ADC is disabled. Enable-protection is
denoted by the Enable-Protected property in each individual register description.
denoted by the Enable-Protected property in each individual register description.