Microchip Technology DM164130-7 Data Sheet
2010-2012 Microchip Technology Inc.
DS41414D-page 87
PIC16(L)F1946/47
7.0
INTERRUPTS
The interrupt feature allows certain events to preempt
normal program flow. Firmware is used to determine
the source of the interrupt and act accordingly. Some
interrupts can be configured to wake the MCU from
Sleep mode.
This chapter contains the following information for
Interrupts:
• Operation
• Interrupt Latency
• Interrupts During Sleep
• INT Pin
• Automatic Context Saving
Many peripherals produce interrupts. Refer to the
corresponding chapters for details.
A block diagram of the interrupt logic is shown in
normal program flow. Firmware is used to determine
the source of the interrupt and act accordingly. Some
interrupts can be configured to wake the MCU from
Sleep mode.
This chapter contains the following information for
Interrupts:
• Operation
• Interrupt Latency
• Interrupts During Sleep
• INT Pin
• Automatic Context Saving
Many peripherals produce interrupts. Refer to the
corresponding chapters for details.
A block diagram of the interrupt logic is shown in
.
FIGURE 7-1:
INTERRUPT LOGIC
TMR0IF
TMR0IE
INTF
INTE
IOCIF
IOCIE
Interrupt
to CPU
Wake-up
(If in Sleep mode)
GIE
(TMR1IF) PIR1<0>
PIRn<7>
PIEn<7>
PEIE
Peripheral Interrupts
(TMR1IF) PIR1<0>