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PIC16F722AT-I/SP Datasheet(PDF) 37 Page - Microchip Technology

Part # PIC16F722AT-I/SP
Description  28-Pin Flash Microcontrollers with nanoWatt XLP Technology
PDF  284 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

PIC16F722AT-I/SP Datasheet(HTML) 37 Page - Microchip Technology

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 2010 Microchip Technology Inc.
DS41417A-page 37
PIC16F/LF722A/723A
4.0
INTERRUPTS
The PIC16F/LF722A/723A device family features an
interruptible core, allowing certain events to preempt
normal program flow. An Interrupt Service Routine
(ISR) is used to determine the source of the interrupt
and act accordingly. Some interrupts can be configured
to wake the MCU from Sleep mode.
The PIC16F/LF722A/723A device family has 12
interrupt sources, differentiated by corresponding
interrupt enable and flag bits:
• Timer0 Overflow Interrupt
• External Edge Detect on INT Pin Interrupt
• PORTB Change Interrupt
• Timer1 Gate Interrupt
• A/D Conversion Complete Interrupt
• AUSART Receive Interrupt
• AUSART Transmit Interrupt
• SSP Event Interrupt
• CCP1 Event Interrupt
• Timer2 Match with PR2 Interrupt
• Timer1 Overflow Interrupt
• CCP2 Event Interrupt
A block diagram of the interrupt logic is shown in
Figure 4-1.
FIGURE 4-1:
INTERRUPT LOGIC
T0IF
T0IE
INTF
INTE
RBIF
RBIE
GIE
PEIE
Wake-up (If in Sleep mode)(1)
Interrupt to CPU
TMR1GIE
TMR1GIF
ADIF
ADIE
IOC-RB0
IOCB0
IOC-RB1
IOCB1
IOC-RB2
IOCB2
IOC-RB3
IOCB3
CCP1IF
CCP1IE
IOC-RB4
IOCB4
IOC-RB5
IOCB5
IOC-RB6
IOCB6
IOC-RB7
IOCB7
RCIF
RCIE
TMR2IE
TMR2IF
SSPIE
SSPIF
TXIE
TXIF
TMR1IE
TMR1IF
Note 1:
Some peripherals depend upon the
system clock for operation. Since the
system clock is suspended during
Sleep, these peripherals will not wake
the part from Sleep. See Section 19.1
“Wake-up from Sleep”.
CCP2IF
CCP2IE



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