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Forum Index : Microcontroller and PC projects : pic32 portspeed.

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plasma
Guru

Joined: 08/04/2012
Location: Germany
Posts: 437

Posted: 05:31pm 11 Feb 2018

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Hi ,

i need a info about the Portspeed for pic32 mx and pic32 mz.
how many pulses can it produce in full speed , in mmbasic and maybe in c or asm.
i have no chance to test this at the moment so i ask here for help.

thx

panky

Guru

Joined: 02/10/2012
Location: Australia
Posts: 1116

Posted: 05:14am 12 Feb 2018

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@plasma

Using a PIC32MX170 at 40MHz, the MMBasic Manual says using the PULSE command your can generate pulses a minimum of 5uS in MMBasic.

Extrapolate out to a PIC32MX470 running at 120MHz, you should be able to get down to somewhere around 2uS or a bit less Going to a PIC32MZ at 252Mhz should allow you to get down to something a bit less than 1uS.

No idea what C or Assembler could achieve but at 1 instruction per machine cycle, the MZ chip at 252MHz should be able to get down to something approaching 10nS pulses - this is entirely supposition

panky

... almost all of the Maximites, the MicromMites, the MM Extremes, the ArmMites, the PicoMite and loving it!

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