PIC18F258 Datasheet, PDF (135/384 Pages) Microchip Technology – High Performance, 28/40-Pin Enhanced FLASH Microcontrollers with CAN

PIC18FXX8
FIGURE 16-2:
ECCP1CON
<7:6>
PWM OUTPUT RELATIONSHIPS
SIGNAL
0
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
 2002 Microchip Technology Inc.
Preliminary
DS41159B-page 133