Datasheet

148
XMEGA B [DATASHEET]
8291B–AVR–01/2013
12.14.4 INTFLAGS – Interrupt Flag register
 Bit 7:2 – 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.
 Bit 1:0 – INTnIF: Interrupt n Flag
The INTnIF flag is set when a pin change/state matches the pin's input sense configuration, and the pin is set as source
for port interrupt n. Writing a one to this flag's bit location will clear the flag. For enabling and executing the interrupt, refer
to the interrupt level description. The configuration of VPCTRLA, virtual port-map control register A, or VPCTRLB, Virtual
Port-map Control Register B, decides which flags are mapped. When a port is mapped as virtual, accessing this register
is identical to accessing the actual INTFLAGS register for the port.
Bit 76543210
+0x03
– – – – – – INT1IF INT0IF
Read/Write R R RRRRR/WR/W
Initial Value 00000000