Datasheet

 2011-2017 Microchip Technology Inc. DS40001574D-page 139
PIC16(L)F1938/9
FIGURE 13-1: INTERRUPT-ON-CHANGE BLOCK DIAGRAM
D
CK
R
Q
D
CK
R
Q
RBx
IOCBNx
IOCBPx
Q2
D
CK
S
Q
Q4Q1
data bus =
0 or 1
write IOCBFx
IOCIE
to data bus
IOCBFx
edge
detect
IOC interrupt
to CPU core
from all other
IOCBFx individual
pin detectors
Q1
Q2
Q3
Q4
Q4Q1
Q1
Q2
Q3
Q4
Q1
Q2
Q3
Q4
Q4
Q4Q1
Q4Q1
Q4Q1