Re: TPU3 PWM glitch?
Baruch Einziger <[email protected]>
| Newsgroups | gmane.comp.hardware.motorola.microcontrollers |
|---|---|
| Message-ID | <[email protected]> |
it's take time till the TPU microcode the recalclate the pwm counters. so you can't generate 0% or 100% PWM wihout glitch. Try the MIOS1. "Schroeder, Steven A." <[email protected]> wrote:We are using a TPU3 channel in the MPC563 to generate a 4kHz PWM signal. Updating the duty cycle is accomplished by simply writing a new PWMHI value and it operates very well. Until now. When the duty cycle first becomes 0% we write 0 to PWMHI. The first cycle at 0% outputs a 550ns pulse; after that it stays low. The problem is that the device being driven does not like narrow pulses such as this. Has anyone seen this before? Steve [Non-text portions of this message have been removed] ----------------------------------------------------------- To learn more about Freescale Microcontrollers, please visit http://www.freescale.com/mcu SPONSORED LINKS Intel microprocessors Pic microcontrollers 8085 microprocessor --------------------------------- YAHOO! GROUPS LINKS Visit your group "MPC500" on the web. To unsubscribe from this group, send an email to: [email protected] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. --------------------------------- --------------------------------- Start your day with Yahoo! - make it your home page [Non-text portions of this message have been removed] ------------------------ Yahoo! Groups Sponsor --------------------~--> <font face=arial size=-1><a href="http://us.ard.yahoo.com/SIG=12hq51cso/M=362131.6882499.7825260.1510227/D=groups/S=1706554205:TM/Y=YAHOO/EXP=1123015491/A=2889191/R=0/SIG=10r90krvo/*http://www.thebeehive.org ">Get Bzzzy! (real tools to help you find a job) Welcome to the Sweet Life - brought to you by One Economy</a>.</font> --------------------------------------------------------------------~-> ----------------------------------------------------------- To learn more about Freescale Microcontrollers, please visit http://www.freescale.com/mcu Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/MPC500/ <*> To unsubscribe from this group, send an email to: [email protected] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/