PIC12F1501-I Datasheet, PDF (106/278 Pages) Microchip Technology – 8-Pin Flash, 8-Bit Microcontrollers

PIC12(L)F1501
FIGURE 12-1:
INTERRUPT-ON-CHANGE BLOCK DIAGRAM (PORTA EXAMPLE)
IOCANx
D
Q
CK
R
Q4Q1
Edge
Detect
RAx
IOCAPx
Q2
D
Q
CK
R
Data Bus =
0 or 1
Write IOCAFx
S
D
Q
CK
To Data Bus
IOCAFx
IOCIE
From all other
IOCAFx 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
DS41615A-page 106
Preliminary
 2011 Microchip Technology Inc.