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PIC16(L)F1508/9
DS40001609E-page 120
2011-2015 Microchip Technology Inc.
FIGURE 12-1:
INTERRUPT-ON-CHANGE BLOCK DIAGRAM (PORTA EXAMPLE)
IOCANx
IOCAPx
Q2
Q4Q1
data bus =
0 or 1
write IOCAFx
IOCIE
to data bus
IOCAFx
edge
detect
IOC interrupt
to CPU core
from all other
IOCnFx individual
pin detectors
D
Q
S
D
Q
R
D
Q
R
RAx
Q1
Q2
Q3
Q4
Q4Q1
Q1
Q2
Q3
Q4
Q1
Q2
Q3
Q4
Q4Q1
Q4Q1
Q4Q1
F
OSC
Rev. 10-000 037A
6/2/201 4