PIC18F1230 MICROCHIP [Microchip Technology], PIC18F1230 Datasheet - Page 123

• Manufacturer Part Number: PIC18F1230
• Description: 18/20/28-Pin, Enhanced Flash Microcontrollers with nanoWatt Technology, High-Performance PWM and A/D
• Manufacturer: MICROCHIP [Microchip Technology]

FIGURE 13-6:
FIGURE 13-7:
© 2006 Microchip Technology Inc.
Note 1: Interrupt flag bit, PTIF, is sampled here (every Q1).
Note 1: Interrupt flag bit, PTIF, is sampled here (every Q1).
PTMR_INT_REQ
PTMR_INT_REQ
PTMR_INT_REQ
PTMR_INT_REQ
A: PRESCALER = 1:1
B: PRESCALER = 1:4
PRESCALER = 1:1
PRESCALER = 1:4
2: PWM Time Base Period register, PTPER, is loaded with the value FFFh for this example.
PTDIR bit
PTDIR bit
PTIF bit
PTIF bit
PTIF bit
PTIF bit
F
F
PTMR
PTMR
PTMR
PTMR
OSC
OSC
/4
/4
Q1
Q1
Qc
Qc
1
1
1
1
Q2
Qc
Q2
Qc
PWM TIME BASE INTERRUPT TIMING, SINGLE-SHOT MODE
PWM TIME BASE INTERRUPTS, CONTINUOUS UP/DOWN COUNT MODE
FFEh
002h
FFEh
002h
Q3
Q3
Qc
Qc
Q4
Q4
Qc
Qc
Q1
Q1
Qc
1
Qc
1
1
1
2
2
Q2
Q2
Qc
Qc
FFFh
001h
001h
FFFh
Advance Information
Q3
Q3
Qc
Qc
Q4
Q4
Qc
Qc
Qc
Q1
Qc
Q1
1
1
1
1
Q4
Q4
Qc
Q2
Qc
Q2
Q4
Q4
000h
000h
000h
000h
Q3
Q3
Qc
Qc
Q4
Q4
Qc
Qc
PIC18F1230/1330
Q1
Q1
Qc
Qc
1
1
Q2
Q2
Qc
Qc
001h
000h
001h
000h
Q3
Q3
Qc
Qc
Q4
Q4
Qc
Qc
Q1
Q1
Qc
Qc
DS39758B-page 121
Q2
Qc
Q2
Qc
002h
002h
000h
000h
Q3
Q3
Qc
Qc
Q4
Q4
Qc
Qc