PIC16F84A-20E/SS【PDF 4/81 页】IC MCU CMOS 20MHZ 1K FLSH 20SSOP

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PIC16F84A

DS35007B-page 10

2001 Microchip Technology Inc.

2.3.3

INTCON REGISTER

The INTCON register is a readable and writable

interrupt sources.

REGISTER 2-3:

INTCON REGISTER (ADDRESS 0Bh, 8Bh)

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 (INTCON<7>).

R/W-0

R/W-x

GIE

EEIE

T0IE

INTE

RBIE

T0IF

INTF

RBIF

bit 7

bit 0

bit 7

GIE: Global Interrupt Enable bit

= Enables all unmasked interrupts

= Disables all interrupts

bit 6

EEIE: EE Write Complete Interrupt Enable bit

= Enables the EE Write Complete interrupts

= Disables the EE Write Complete interrupt

bit 5

T0IE: TMR0 Overflow Interrupt Enable bit

= Enables the TMR0 interrupt

= Disables the TMR0 interrupt

bit 4

INTE: RB0/INT External Interrupt Enable bit

= Enables the RB0/INT external interrupt

= Disables the RB0/INT external interrupt

bit 3

RBIE: RB Port Change Interrupt Enable bit

= Enables the RB port change interrupt

= Disables the RB port change interrupt

bit 2

T0IF: TMR0 Overflow Interrupt Flag bit

= TMR0 register has overflowed (must be cleared in software)

= TMR0 register did not overflow

bit 1

INTF: RB0/INT External Interrupt Flag bit

= The RB0/INT external interrupt occurred (must be cleared in software)

= The RB0/INT external interrupt did not occur

bit 0

RBIF: RB Port Change Interrupt Flag bit

= At least one of the RB7:RB4 pins changed state (must be cleared in software)

= None of the RB7:RB4 pins have changed state

Legend:

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

- n = Value at POR

’1’ = Bit is set

’0’ = Bit is cleared

x = Bit is unknown

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