PIC16F1938_13 Datasheet, PDF (144/488 Pages) Microchip Technology – 28/40/44-Pin Flash-Based, 8-Bit CMOS Microcontrollers with LCD Driver

PIC16(L)F1938/9
FIGURE 13-1:
INTERRUPT-ON-CHANGE BLOCK DIAGRAM
IOCBNx
D
Q
CK
R
Q4Q1
edge
detect
RBx
IOCBPx
Q2
D
Q
CK
R
data bus =
0 or 1
write IOCBFx
S
D
Q
CK
to data bus
IOCBFx
IOCIE
from all other
IOCBFx individual
pin detectors
IOC interrupt
to CPU core
Q1
Q1
Q1
Q2
Q2
Q2
Q3
Q3
Q3
Q4 _Q4
Q4
Q4
Q4Q1
Q4Q1
Q4Q1
Q4Q1
DS40001574C-page 144
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