13.5.1 Control A

Name: CTRLA
Offset: 0x00
Reset: 0x00
Property: Configuration Change Protection

Bit 76543210 
  IVSELCVT    LVL0RR 
Access R/WR/WR/W 
Reset 000 

Bit 6 – IVSEL Interrupt Vector Select

This bit is protected by the Configuration Change Protection mechanism.

ValueDescription
0Interrupt vectors are placed at the start of the application section of the Flash
1Interrupt vectors are placed at the start of the boot section of the Flash

Bit 5 – CVT Compact Vector Table

This bit is protected by the Configuration Change Protection mechanism.

ValueDescription
0Compact Vector Table function is disabled
1Compact Vector Table function is enabled

Bit 0 – LVL0RR Round Robin Priority Enable

This bit is not protected by the Configuration Change Protection mechanism.
ValueDescription
0Priority is fixed for priority level 0 interrupt requests: The lowest interrupt vector address has the highest priority
1The round robin priority scheme is enabled for priority level 0 interrupt requests