PIC18F2331_10 Datasheet, PDF (183/392 Pages) Microchip Technology – 28/40/44-Pin Enhanced Flash Microcontrollers with nanoWatt Technology, High-Performance PWM and A/D

PIC18F2331/2431/4331/4431
FIGURE 18-7:
PWM TIME BASE INTERRUPT, CONTINUOUS UP/DOWN COUNT MODE
A: PRESCALER = 1:1
Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4
FOSC/4
PTMR
002h
001h
000h
001h
002h
PTDIR bit
PTMR_INT_REQ
1
1
1
1
PTIF bit
B: PRESCALER = 1:4
Q4 Q4
Qc Qc Qc Qc Qc Qc Qc Qc Qc Qc Qc Qc Qc Qc Qc Qc Qc Qc Qc Qc
PTMR
PTDIR bit
1
PTMR_INT_REQ
002h
PTIF bit
001h
1
000h
1
001h
1
002h
Note 1: Interrupt flag bit, PTIF, is sampled here (every Q1).
 2010 Microchip Technology Inc.
DS39616D-page 183