dspic33fj128mc706at-i-pt Microchip Technology Inc., dspic33fj128mc706at-i-pt Datasheet - Page 179

• Manufacturer Part Number: dspic33fj128mc706at-i-pt
• Description: High-performance, 16-bit Digital Signal Controllers
• Manufacturer: Microchip Technology Inc.

16.0
This module simplifies the task of generating multiple,
synchronized Pulse-Width Modulated (PWM) outputs.
In particular, the following power and motion control
applications are supported by the PWM module:
• 3-Phase AC Induction Motor
• Switched Reluctance (SR) Motor
• Brushless DC (BLDC) Motor
• Uninterruptible Power Supply (UPS)
© 2009 Microchip Technology Inc.
Note:
MOTOR CONTROL PWM
MODULE
This data sheet summarizes the features of
the dsPIC33FJXXXMCX06A/X08A/X10A
family of devices. However, it is not
intended to be a comprehensive reference
source. To complement the information in
this data sheet, refer to Section 14. “Motor
Control
“dsPIC33F Family Reference Manual”,
which is available from the Microchip web
site (www.microchip.com).
PWM”
dsPIC33FJXXXMCX06A/X08A/X10A
(DS70187)
in
the
Preliminary
The PWM module has the following features:
• Eight PWM I/O pins with four duty cycle generators
• Up to 16-bit resolution
• ‘On-the-fly’ PWM frequency changes
• Edge and Center-Aligned Output modes
• Single Pulse Generation mode
• Interrupt support for asymmetrical updates in
• Output override control for Electrically
• ‘Special Event’ comparator for scheduling other
• Fault pins to optionally drive each of the PWM
• Duty cycle updates are configurable to be
This module contains four duty cycle generators,
numbered 1 through 4. The module has eight PWM
output pins, numbered PWM1H/PWM1L through
PWM4H/PWM4L. The eight I/O pins are grouped into
high/low numbered pairs, denoted by the suffix H or L,
respectively. For complementary loads, the low PWM
pins are always the complement of the corresponding
high I/O pin.
The PWM module allows several modes of operation
which are beneficial for specific power control
applications.
Center-Aligned mode
Commutative Motor (ECM) operation
peripheral events
output pins to a defined state
immediate or synchronized to the PWM time base
DS70594A-page 177