PIC16F/LF1946/47
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
Figure 7-1 and Figure 7-2.
FIGURE 7-1:
INTERRUPT LOGIC
Wake-up (If in Sleep mode)
TMR0IF
TMR0IE
INTF
INTE
Interrupt to CPU
IOCIF
IOCIE
From Peripheral Interrupt
Logic (Figure 7-2)
PEIE
GIE
2010 Microchip Technology Inc.
Preliminary
DS41414A-page 83
MICROCHIP [ MICROCHIP ]
