PIC18F1220ESLASHSOSQTP datasheet(84/308 Pages) MICROCHIP

84 / 308 page

PIC18F1220/1320

DS39605F-page 82

9.4

IPR Registers

The IPR registers contain the individual priority bits for

the peripheral interrupts. Due to the number of

peripheral interrupt sources, there are two Peripheral

Interrupt Priority registers (IPR1, IPR2). Using the

priority bits requires that the Interrupt Priority Enable

(IPEN) bit be set.

IPR1: PERIPHERAL INTERRUPT PRIORITY REGISTER 1

U-0

R/W-1

U-0

R/W-1

—

ADIP

RCIP

TXIP

—

CCP1IP

TMR2IP

TMR1IP

bit 7

bit 0

bit 7

Unimplemented: Read as ‘0’

bit 6

ADIP: A/D Converter Interrupt Priority bit

=High priority

= Low priority

bit 5

RCIP: EUSART Receive Interrupt Priority bit

=High priority

= Low priority

bit 4

TXIP: EUSART Transmit Interrupt Priority bit

=High priority

= Low priority

bit 3

Unimplemented: Read as ‘0’

bit 2

CCP1IP: CCP1 Interrupt Priority bit

=High priority

= Low priority

bit 1

TMR2IP: TMR2 to PR2 Match Interrupt Priority bit

=High priority

= Low priority

bit 0

TMR1IP: TMR1 Overflow Interrupt Priority bit

=High priority

= Low priority

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

PIC18F1220E/SOSQTP Datasheet(PDF) 84 Page - Microchip Technology

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