PIC18LF4331 datasheet(104/392 Pages) MICROCHIP

104 / 392 page

PIC18F2331/2431/4331/4431

DS39616D-page 104

 2010 Microchip Technology Inc.

PIR3: PERIPHERAL INTERRUPT REQUEST (FLAG) REGISTER 3

U-0

R/W-0

—

PTIF

IC3DRIF

IC2QEIF

IC1IF

TMR5IF

bit 7

bit 0

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

bit 7-5

Unimplemented:

Read as ‘0’

bit 4

PTIF:

PWM Time Base Interrupt bit

= PWM time base matched the value in the PTPER registers. Interrupt is issued according to the

postscaler settings. PTIF must be cleared in software.

= PWM time base has not matched the value in the PTPER registers

bit 3

IC3DRIF:

IC3 Interrupt Flag/Direction Change Interrupt Flag bit

IC3 Enabled (CAP3CON<3:0>):

= TMR5 value was captured by the active edge on CAP3 input (must be cleared in software)

= TMR5 capture has not occurred

QEI Enabled (QEIM<2:0>):

= Direction of rotation has changed (must be cleared in software)

= Direction of rotation has not changed

bit 2

IC2QEIF:

IC2 Interrupt Flag/QEI Interrupt Flag bit

IC2 Enabled (CAP2CON<3:0>):

= TMR5 value was captured by the active edge on CAP2 input (must be cleared in software)

= TMR5 capture has not occurred

QEI Enabled (QEIM<2:0>):

= The QEI position counter has reached the MAXCNT value, or the index pulse, INDX, has been

detected. Depends on the QEI operating mode enabled. Must be cleared in software.

= The QEI position counter has not reached the MAXCNT value or the index pulse has not been

detected

bit 1

IC1 Enabled (CAP1CON<3:0>):

= TMR5 value was captured by the active edge on CAP1 input (must be cleared in software)

= TMR5 capture has not occurred

QEI Enabled (QEIM<2:0>), Velocity Measurement Mode Enabled (VELM = 0 in QEICON register):

= Timer5 value was captured by the active velocity edge (based on PHA or PHB input). CAP1REN

bit must be set in CAP1CON register. IC1IF must be cleared in software.

= Timer5 value was not captured by the active velocity edge

bit 0

TMR5IF:

Timer5 Interrupt Flag bit

= Timer5 time base matched the PR5 value (must be cleared in software)

= Timer5 time base did not match the PR5 value

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