PIC16F684_07 Datasheet, PDF (109/192 Pages) Microchip Technology – 14-Pin, Flash-Based 8-Bit CMOS Microcontrollers with nanoWatt Technology

PIC16F684
12.4.2 TIMER0 INTERRUPT
An overflow (FFh → 00h) in the TMR0 register will set
the T0IF bit of the INTCON register. The interrupt can
be enabled/disabled by setting/clearing T0IE bit of the
INTCON register. See Section 5.0 “Timer0 Module”
for operation of the Timer0 module.
12.4.3 PORTA INTERRUPT-ON-CHANGE
An input change on PORTA sets the RAIF bit of the
INTCON register. The interrupt can be
enabled/disabled by setting/clearing the RAIE bit of the
INTCON register. Plus, individual pins can be
configured through the IOCA register.
Note:
If a change on the I/O pin should occur
when any PORTA operation is being
executed, then the RAIF interrupt flag may
not get set.
FIGURE 12-7:
INTERRUPT LOGIC
IOC-RA0
IOCA0
IOC-RA1
IOCA1
IOC-RA2
IOCA2
IOC-RA3
IOCA3
IOC-RA4
IOCA4
IOC-RA5
IOCA5
TMR2IF
TMR2IE
TMR1IF
TMR1IE
C1IF
C1IE
C2IF
C2IE
ADIF
ADIE
EEIF
EEIE
OSFIF
OSFIE
CCP1IF
CCP1IE
T0IF
T0IE
INTF
INTE
RAIF
RAIE
PEIE
GIE
Wake-up (If in Sleep mode)⁽¹⁾
Interrupt to CPU
Note 1:
Some peripherals depend upon the system clock for
operation. Since the system clock is suspended during Sleep, only
those peripherals which do not depend upon the system clock will wake
the part from Sleep. See Section 12.7.1 “Wake-up from Sleep”.
© 2007 Microchip Technology Inc.
DS41202F-page 107