PIC18F2220 MICROCHIP [Microchip Technology], PIC18F2220 Datasheet - Page 150

• Manufacturer Part Number: PIC18F2220
• Description: 28/40/44-Pin High-Performance, Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology
• Manufacturer: MICROCHIP [Microchip Technology]

PIC18F2220/2320/4220/4320
FIGURE 16-8:
FIGURE 16-9:
DS39599C-page 148
Note 1: The direction bit in the CCP1 Control register (CCP1CON<7>) is written any time during the PWM cycle.
P1A (Active High)
P1B (Active High)
P1C (Active High)
P1D (Active High)
Note 1: All signals are shown as active-high.
2: When changing directions, the P1A and P1C signals switch before the end of the current PWM cycle at intervals of
External Switch C
External Switch D
SIGNAL
Shoot-Through
4 T
inactive at this time.
2: t
3: t
OSC
Potential
Current
on
off
, 16 T
is the turn-on delay of power switch QC and its driver.
is the turn-off delay of power switch QD and its driver.
P1A
P1B
P1C
P1D
PWM DIRECTION CHANGE
PWM DIRECTION CHANGE AT NEAR 100% DUTY CYCLE
OSC
or 64 T
OSC
DC
, depending on the Timer2 prescaler value. The modulated P1B and P1D signals are
Forward Period
Period
DC
(1)
t1
DC
(Note 2)
t
on
Reverse Period
(2)
t
t = t
off
(3)
Period
off
DC
– t
 2003 Microchip Technology Inc.
on
(2,3)
(1)