Datasheet

Table Of Contents
PIC18F1220/1320
DS39605F-page 120 © 2007 Microchip Technology Inc.
FIGURE 15-3: SIMPLIFIED BLOCK DIAGRAM OF THE ENHANCED PWM MODULE
FIGURE 15-4: PWM OUTPUT RELATIONSHIPS (ACTIVE-HIGH STATE)
CCPR1L
CCPR1H (Slave)
Comparator
TMR2
Comparator
PR2
(Note 1)
RQ
S
Duty Cycle Registers
CCP1CON<5:4>
Clear Timer,
set CCP1 pin and
latch D.C.
Note: The 8-bit TMR2 register is concatenated with the 2-bit internal Q clock, or 2 bits of the prescaler to create the
10-bit time base.
TRISB<3>
RB3/CCP1/P1A
TRISB<2>
RB2/P1B/INT2
TRISB<6>
RB6/PGC/T1OSO/T13CKI/
TRISB<7>
RB7/PGD/T1OSI/P1D/KBI3
Output
Controller
P1M1<1:0>
2
CCP1M<3:0>
4
CCP1DEL
CCP1/P1A
P1B
P1C
P1D
P1C/KBI2
0
Period
00
10
01
11
SIGNAL
PR2+1
CCP1CON<7:6>
P1A Modulated
P1A Modulated
P1B Modulated
P1A Active
P1B Inactive
P1C Inactive
P1D Modulated
P1A Inactive
P1B Modulated
P1C Active
P1D Inactive
Duty
Cycle
(Single Output)
(Half-Bridge)
(Full-Bridge,
Forward)
(Full-Bridge,
Reverse)
Delay
(1)
Delay
(1)