Atmel Xplained Pro Evaluation Kit for the ATSAMD21J18A Microcontroller ATSAMD21-XPRO ATSAMD21-XPRO Data Sheet

565

Atmel | SMART SAM D21 [DATASHEET]

Atmel-42181C–SAM-D21_Datasheet–07/2014

When the CPU is halted in debug mode the I

2

S continues the normal operation. If the I

2

S is configured such that it is 

periodically serviced by the CPU through interrupts or other requests, it might result in improper operation or data loss 
while debugging.

All registers with write-access are optionally write-protected by the Peripheral Access Controller (PAC), except the 
following register:

z

DATAm

z

INTFLAG

z

SYNCBUSY

Write-protection is denoted by the Write-protected property in the register description. Write-protection does not apply for 
accesses through an external debugger. Refer to 

 for details.

Not applicable.