PIC18FXX8 Datasheet, PDF (137/402 Pages) Microchip Technology – 28/40-Pin High-Performance, Enhanced Flash Microcontrollers with CAN Module

PIC18FXX8
FIGURE 16-2:
PWM OUTPUT RELATIONSHIPS
0
ECCP1CON
<7:6>
SIGNAL
Duty
Cycle
Period
P1A Modulated, Active-High
00
P1A Modulated, Active-Low
P1A Modulated, Active-High
P1A Modulated, Active-Low
10
P1B Modulated, Active-High
P1B Modulated, Active-Low
P1A Active, Active-High
P1A Active, Active-Low
P1B Inactive, Active-High
P1B Inactive, Active-Low
01
P1C Inactive, Active-High
P1C Inactive, Active-Low
P1D Modulated, Active-High
P1D Modulated, Active-Low
P1A Inactive, Active-High
P1A Inactive, Active-Low
P1B Modulated, Active-High
P1B Modulated, Active-Low
11
P1C Active, Active-High
P1C Active, Active-Low
P1D Inactive, Active-High
P1D Inactive, Active-Low
Delay
Delay
PR2 + 1
Relationships:
• Period = 4 * TOSC * (PR2 + 1) * (TMR2 Prescale Value)
• Duty Cycle = TOSC * (CCPR1L<7:0>:CCP1CON<5:4>) * (TMR2 Prescale Value)
• Delay = 4 * TOSC * ECCP1DEL
 2004 Microchip Technology Inc.
DS41159D-page 135