PIC16LF1902-I/P View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC16LF1902-I/P

28-Pin Flash-Based, 8-Bit CMOS Microcontrollers with LCD Driver and nanoWatt XLP Technology

Microchip Technology 

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

PIC16LF1902/3

A block diagram of the interrupt logic is shown in

Figure 7.1 and 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

 2011 Microchip Technology Inc.

Preliminary

DS41455A-page 61

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