PCM18XT0 Microchip Technology, PCM18XT0 Datasheet - Page 183

• Manufacturer Part Number: PCM18XT0
• Description: MODULE PROC PIC18F4685
• Manufacturer: Microchip Technology

Specifications of PCM18XT0

• Accessory Type: Processor Module
• Product: Microcontroller Modules
• Core Processor: PIC18F4685
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• For Use With/related Products: ICE2000
• For Use With: ICE2000 - EMULATOR MPLAB-ICE 2000 POD
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Not applicable / Not applicable

FIGURE 16-8:
FIGURE 16-9:
© 2009 Microchip Technology Inc.
Note 1:
External Switch C
External Switch D
Note 1:
P1A (Active-High)
P1B (Active-High)
P1C (Active-High)
P1D (Active-High)
2:
Shoot-Through
SIGNAL
2:
3:
The direction bit in the ECCP1 Control register (ECCP1CON<7>) is written any time during the PWM cycle.
When changing directions, the P1A and P1C signals switch before the end of the current PWM cycle at
intervals of 4 T
P1D signals are inactive at this time.
Current
Potential
All signals are shown as active-high.
t
t
ON
OFF
P1C
P1D
P1A
P1B
PWM DIRECTION CHANGE
PWM DIRECTION CHANGE AT NEAR 100% DUTY CYCLE
is the turn-on delay of power switch QC and its driver.
is the turn-off delay of power switch QD and its driver.
(1)
(1)
(1)
(1)
(1)
(1)
(1)
OSC
, 16 T
DC
OSC
or 64 T
Forward Period
PIC18F2682/2685/4682/4685
Period
OSC
DC
, depending on the Timer2 prescaler value. The modulated P1B and
(1)
t1
DC
(Note 2)
t
ON
t
t = t
(2)
OFF
Reverse Period
(3)
OFF
Period
DC
– t
ON
(2,3)
DS39761C-page 183