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| PIC16LF1904 Datasheet, PDF (67/288 Pages) Microchip Technology – 28/40/44-Pin Flash-Based, 8-Bit CMOS Microcontrollers with LCD Driver and nanoWatt XLP Technology | |||
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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 cor-
responding chapters for details.
FIGURE 7-1:
INTERRUPT LOGIC
PIC16LF1904/6/7
A block diagram of the interrupt logic is shown in
Figure 7.1.
Peripheral Interrupts
(TMR1IF) PIR1<0>
(TMR1IF) PIR1<0>
PIRn<7>
PIEn<7>
TMR0IF
TMR0IE
INTF
INTE
IOCIF
IOCIE
PEIE
GIE
Wake-up
(If in Sleep mode)
Interrupt
to CPU
ï£ 2011 Microchip Technology Inc.
Preliminary
DS41569A-page 67
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