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    Senior Member radargeek's Avatar
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    Quote Originally Posted by FJR1300 View Post
    Ha, the 24F chip has negative ipt marked on it!
    I think that's a hyphen they didn't wrap correctly. I indicates industrial temperature range (-40 to +85C) and the PT is the package type (quad flatpack). I got this info from the datasheet.

    The PIC24FJ256GB106 is a 16 bit MCU with 256K of program flash, 16K of SRAM and USB 2.0 capability, multiple serial comm modules and up to 32 MHz (16 MIPS).
    The PIC24HJ128GP204 is a 16 bit MCU with 128K of program flash, 8K of SRAM, and up to 80 MHz (40 MIPS).

    I'm not sure where they get the 16/32 bit or 100 MHz from. It goes to show that a jammer doesn't need an Intel Core i7 in it to do its job well, and it's probably more powerful than the CPUs in even the newest lidar guns.

    If I were to venture guesses as to what does what, I would say the 256GB106 handles the USB and communications duties (talking to the modules like the control set, RG module, USB port etc.) while the 128GP204 handles the jamming duties.

    Here's the thread that has pics of the innards: http://radarandlaserforum.com/showth...-CPU-Internals

    There must be a serial flash chip in there somewhere as well to store user settings and statistics, unless they're written to the program flash.
    Last edited by radargeek; 01-09-2015 at 09:09 AM. Reason: multiple errors
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