Datasheet

PIC12(L)F1571/2
DS40001723D-page 120  2013-2015 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
DQ
S
DQ
R
DQ
R
RAx
Q1
Q2
Q3
Q4
Q4Q1
Q1
Q2
Q3
Q4
Q1
Q2
Q3
Q4
Q4Q1
Q4Q1Q4Q1
FOSC
Rev . 10-000 037A
6/2/201 4