PIC16F819 Datasheet

IC型号：
PIC16F819
PDF描述：
18/20-Pin Enhanced Flash Microcontrollers with nanoWatt Tech...
文件大小：
68.31KB
PDF页数：
176页
芯片厂家：
MICROCHIP

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PIC16F818/819

2.2.2.3

INTCON Register

Note:

Interrupt flag bits get set when an interrupt

condition occurs regardless of the state of

its corresponding enable bit or the global

enable bit, GIE (INTCON<7>). User

software should ensure the appropriate

interrupt flag bits are clear prior to

enabling an interrupt.

The INTCON register is a readable and writable regis-

ter that contains various enable and flag bits for the

TMR0 register overflow, RB port change and external

RB0/INT pin interrupts.

INTCON: INTERRUPT CONTROL REGISTER (ADDRESS 0Bh, 8Bh, 10Bh, 18Bh)

R/W-0

GIE

bit 7

R/W-0

PEIE

R/W-0

TMR0IE

R/W-0

INTE

R/W-0

RBIE

R/W-0

TMR0IF

R/W-0

INTF

R/W-x

RBIF

bit 0

bit 7

GIE:

Global Interrupt Enable bit

= Enables all unmasked interrupts

= Disables all interrupts

PEIE:

Peripheral Interrupt Enable bit

= Enables all unmasked peripheral interrupts

= Disables all peripheral interrupts

TMR0IE:

TMR0 Overflow Interrupt Enable bit

= Enables the TMR0 interrupt

= Disables the TMR0 interrupt

INTE:

RB0/INT External Interrupt Enable bit

= Enables the RB0/INT external interrupt

= Disables the RB0/INT external interrupt

RBIE:

RB Port Change Interrupt Enable bit

= Enables the RB port change interrupt

= Disables the RB port change interrupt

TMR0IF:

TMR0 Overflow Interrupt Flag bit

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

= TMR0 register did not overflow

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

RBIF:

RB Port Change Interrupt Flag bit

A mismatch condition will continue to set flag bit RBIF. Reading PORTB will end the mismatch

condition and allow flag bit RBIF to be cleared.

= 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

- n = Value at POR

W = Writable bit

鈥?鈥?= Bit is set

U = Unimplemented bit, read as 鈥?鈥?/div>

鈥?鈥?= Bit is cleared

x = Bit is unknown

bit 6

bit 5

bit 4

bit 3

bit 2

bit 1

bit 0

DS39598D-page 18

Preliminary

铮?/div>

2003 Microchip Technology Inc.

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