Mouser BOM & Microchip

[moslof ewing]

The microchip ATMEGA328P-15AZ that the Mouser BOM points to is now longer normally available.  Or at least it shows that it's a Factory special order.  Is there another version that is compatible with the BlueSaab?  For example: ATMEGA328P-AU ??

Is it correct that PCB 5.3.1 is the most current?  How long (days - weeks - months - unknown ??) before you finish testing V6?

Thanks for any help.

[Karlis]

I *think* ATMEGA328P-AU should work. It's essentially the same as ATMEGA328P-15AZ, but 15AZ is high temp. Long story short, it should work, I think. I would let Seth chime in on this one.

5.3.1 currently is the latest version of the module (unless I'm missing something).

V6 prototype is working, but I wouldn't like to make it public yet as I haven't given it proper testing. I'm juggling a number of things at the same time now: V6, BlueSaab XM and BlueSaab Zero, so at given day, one of them takes priority over the others. That way all of these projects have a chance of being completed.

[Seth]

Karlis is correct; the ATMEGA328P-AU will work just fine, as will the ATMEGA328P-AUR, and ATMEGA328P-AN. I'm not sure why the -15AZ was on the original BOM...it may have been the cheapest at the time.

[homerisback]

Hi there,
I do confirm that it will work : all the latest modules I built were with -AU ones.
Actually, -15AZ one is an "automotive" version of the Atmega328, that's to say it is supposedly more reliable  in tough conditions and can stand higher working temperature (125°C vs 85°C)... That would be useful if its environnement was close to engine or continuously under high vibrations. Laying in the trunk of our SAABs isn't so severe working condition, afaik
Price of -AU version is also much lower than -15AZ, something like one third...

About BlueSAAB version, yes 5.3.1 is the latest available. I did some further work to end at a v5.5 which is basically the same : my aim was to get closer to a v6 version by bringing all components onto PCB's upper side except RN52 chip. Still struggling with OSHPark upload for this version because upper silkscreen partly disapears once processed by their website, can't find out why