PIC16F1847 datasheet(89/408 Pages) MICROCHIP

89 / 408 page

 2011 Microchip Technology Inc.

Preliminary

DS41453B-page 89

PIC16(L)F1847

8.5.1

INTCON REGISTER

The INTCON register is a readable and writable

for TMR0 register overflow, interrupt-on-change and

external INT pin interrupts.

Note:

Interrupt flag bits are set when an interrupt

condition occurs, regardless of the state of

its corresponding enable bit or the Global

Enable bit, GIE of the INTCON register.

User software should ensure the appropri-

ate interrupt flag bits are clear prior to

enabling an interrupt.

INTCON: INTERRUPT CONTROL REGISTER

R/W-0/0

R-0/0

GIE

PEIE

TMR0IE

INTE

IOCE

TMR0IF

INTF

IOCF(1)

bit 7

bit 0

Legend:

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

u = Bit is unchanged

x = Bit is unknown

-n/n = Value at POR and BOR/Value at all other Resets

‘1’ = Bit is set

‘0’ = Bit is cleared

bit 7

GIE:

Global Interrupt Enable bit

= Enables all active interrupts

= Disables all interrupts

bit 6

PEIE:

Peripheral Interrupt Enable bit

= Enables all active peripheral interrupts

= Disables all peripheral interrupts

bit 5

TMR0IE:

Timer0 Overflow Interrupt Enable bit

= Enables the Timer0 interrupt

= Disables the Timer0 interrupt

bit 4

INTE:

INT External Interrupt Enable bit

= Enables the INT external interrupt

= Disables the INT external interrupt

bit 3

IOCE:

Interrupt-on-Change Enable bit

= Enables the interrupt-on-change

= Disables the interrupt-on-change

bit 2

TMR0IF:

Timer0 Overflow Interrupt Flag bit

= TMR0 register has overflowed

= TMR0 register did not overflow

bit 1

INTF:

INT External Interrupt Flag bit

= The INT external interrupt occurred

= The INT external interrupt did not occur

bit 0

IOCF:

Interrupt-on-Change Interrupt Flag bit(1)

= When at least one of the interrupt-on-change pins changed state

= None of the interrupt-on-change pins have changed state

Note 1:

The IOCF Flag bit is read-only and cleared when all the interrupt-on-change flags in the IOCBF register

have been cleared by software.

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