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| PIC16LF1847 Datasheet, PDF (83/408 Pages) Microchip Technology – 18/20/28-Pin Flash Microcontrollers with nanoWatt XLP Technology | |||
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8.0 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 8-1 and Figure 8-2.
FIGURE 8-1:
INTERRUPT LOGIC
TMR0IF
TMR0IE
INTF
INTE
From Peripheral Interrupt
Logic (Figure 8-2)
IOCF
IOCE
PEIE
GIE
PIC16(L)F1847
Wake-up (If in Sleep mode)
Interrupt to CPU
ï£ 2011 Microchip Technology Inc.
Preliminary
DS41453A-page 83
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