Finding the MCU I need on MICROCHIP's website
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  1. #1
    Join Date
    Aug 2006
    Location
    SWITZERLAND (french region)
    Posts
    755

    Default Finding the MCU I need on MICROCHIP's website

    Hi there,

    I'm asking for some guidance on how to use the MAPS or the Parametric Search Tool from MICROCHIP.

    My project consists of driving a 8x8 LED matrix. So, to make it a little more "easy" for me to program, I'd like to find an MCU that has at least two in-a-raw (from 0 to 7) 8bits Outgoing PORTs (i.e. PORTA.0...PORTA.7 and PORTB.0...PORTB.7).

    As I'm short in space, I can not just pick-up a 40 pins MCU and voilą.

    I do have some MCUs in my drawer but, unfortunately, most of them have at least one of the PORT working only as an Input (mostly PORTA.5).

    Currently, I have to read every and single datasheet to find out what I'm looking for.

    But is there a better and faster way to do so?
    Roger

  2. #2
    Join Date
    Sep 2009
    Posts
    753

    Default Re: Finding the MCU I need on MICROCHIP's website

    I don't know how to search for that.
    Maybe PIC16F54?
    But it's very limited on call stack, so not all pbp command are supported.

  3. #3
    Join Date
    Mar 2003
    Location
    Commerce Michigan USA
    Posts
    1,177

    Default Re: Finding the MCU I need on MICROCHIP's website

    I might suggest an 18F26K22. Can be operated @ 64 Mhz. with 3 full ports A,B,C.
    Dave Purola,
    N8NTA
    EN82fn

  4. #4
    Join Date
    Apr 2014
    Location
    Northeast
    Posts
    299

    Default Re: Finding the MCU I need on MICROCHIP's website

    Pin arrangements are fairly consistent, even between PIC16F and 18F parts. If you find that a 28-pin format will work, choose one with the features you need. If you can't find a 20-pin part with the layout needed, you probably never will as they are all mostly the same. You can, however, create aliases that will allow you to use pins from PORTA, PORTB, and PORTC to perform the function of D0, D1, etc. That can enable practically any PIC with the number of pins you need to do the job.

  5. #5
    Join Date
    Aug 2006
    Location
    SWITZERLAND (french region)
    Posts
    755

    Default Re: Finding the MCU I need on MICROCHIP's website

    Thanks All.

    I finally went for a 18F2431...I had to find out after some more search
    Roger

  6. #6
    Join Date
    Apr 2011
    Location
    Portland, Oregon
    Posts
    220

    Default Re: Finding the MCU I need on MICROCHIP's website

    It's not a particularly "user friendly" tool. I typically begin with a couple must have attributes and filter on those, then sort on some of my secondary requirements. Finally, order 3 - 2 of which I'll probably never use. :\

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