Datasheet

Figure 17-1. Timing of Pin Change Interrupts
LE
D Q
D Q
clk
PCINT[i]
pin
PCINT[i] bit
(of PCMSK
n
)
D Q D Q D Q
clk
pcint_sync pcint_setflag
0
7
PCIF
n
(interrupt
flag)
PCINT[i] pin
pin_lat
pin_sync
clk
pcint_in[i]
pcint_syn
pcint_setflag
PCIF
n
pin_lat
pin_sync
pcint_in[i]
Related Links
15. System Control and Reset
13.1 Clock Systems and Their Distribution
13. System Clock and Clock Options
17.2 Register Description
ATmega48PA/88PA/168PA
EXTINT - External Interrupts
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Datasheet Complete
DS40002011A-page 99