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PIC mcu basics

Discussion in 'Electronic Basics' started by Jack// ani, Nov 10, 2004.

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  1. Jack// ani

    Jack// ani Guest

    Hi all,

    I'm sorry if this question is asked several times before.

    I want know the difference between C and F series microcontrollers?
    I'm sure microchip maybe having such a comparison sheet, but I can't
    find one :-(, is anybody having a pointer to it?

    TIA
     
  2. Mike

    Mike Guest

    "F" means EEPROM/Flash while "C" means EPROM.

    You can also view detailed specifications of parts at
    http://www.microchip.com under "Product DataSheets."
     
  3. Guest

    The F series use FLASH based memory which is re-programmbale thousands
    of times.
    The C series us one-time programmable (OTP) memory.
    You should use the F series for program development.

    Dave :)
     
  4. Jack// ani

    Jack// ani Guest

    I'm familiar with 16f series, where you have 35 instructions set.
    There are several other series also, like 12 and 18 how do they
    differ; I guess they have different set of instructions, is that
    right?

    Which mcu should I consider for my application, where I have two
    inputs and two outputs?
    Outputs will switch on/off at a delay of 10minutes depending upon the
    state for inputs.

    I think an 8pin mcu will make it, but I'm not sure which one?

    Thanks
     
  5. Byron A Jeff

    Byron A Jeff Guest

    -> "F" means EEPROM/Flash while "C" means EPROM.
    ->
    -> You can also view detailed specifications of parts at
    -> http://www.microchip.com under "Product DataSheets."
    -
    -I'm familiar with 16f series, where you have 35 instructions set.
    -There are several other series also, like 12 and 18 how do they
    -differ;

    The 12 series are smaller chips (8 pins).

    The 18F is a high range family with a lot more features and instructions.
    But it solves most of the annoying problems of the 16F family in terms of
    memory banking.

    - I guess they have different set of instructions, is that
    -right?

    Augmented instructions for the 18F. The 12F family is pretty much 16F style
    parts in a smaller package.

    -
    -Which mcu should I consider for my application, where I have two
    -inputs and two outputs?

    Anything will do for 2 digital inputs and output. If it's analog, you may have
    to limit your options.

    As a hobbyist I always suggest picking a single part in each package size and
    sticking to it loke glue. I also suggest picking the part with the most
    features so that you won't be limited. Given that here are some
    recommendations:

    8 pin: 12F683
    18 pin: 16F88 or 18F1320
    28 pin: 16F876A or 18F2320
    40 pin: 16F877A or 18F4320

    Personally I find microchips nanowatt clock module, of which all of the
    above parts except for the 16F87[67]A has, invaluable.

    -Outputs will switch on/off at a delay of 10minutes depending upon the
    -state for inputs.
    -
    -I think an 8pin mcu will make it, but I'm not sure which one?

    12F683 may be the ticket for this one. Note that microchip samples most
    every PIC in the lineup.

    BAJ
     
  6. Mike

    Mike Guest

    I think you meant to say that type "C" is also available in OTP?
     
  7. Jack// ani

    Jack// ani Guest

    But as you mentioned C series are EPROM, so how they can be OTP.
     
  8. Lord Garth

    Lord Garth Guest

    You leave the quartz window out of the package design and an EPROM
    becomes a OTP device.
     
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