PIC12F1840 MICROCHIP [Microchip Technology], PIC12F1840 Datasheet - Page 77

• Manufacturer Part Number: PIC12F1840
• Description: 8-Pin Flash Microcontrollers with nanoWatt XLP Technology
• Manufacturer: MICROCHIP [Microchip Technology]

8.0
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
FIGURE 8-1:
 2011 Microchip Technology Inc.
INTERRUPTS
From Peripheral Interrupt
and
Logic
Figure
(Figure
8-2.
INTERRUPT LOGIC
8-2)
TMR0IF
TMR0IE
IOCIE
IOCIF
INTF
INTE
PEIE
GIE
Preliminary
Wake-up (If in Sleep mode)
PIC12F/LF1840
Interrupt to CPU
DS41441A-page 77