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 Posted: Sep 23, 2011 - 04:32 PM |
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Joined: Jul 18, 2005
Posts: 62296
Location: (using avr-gcc in) Finchingfield, Essex, England
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Quote:
(and maybe other things)
Nope, comparing the XMLs it seems that is the ONLY difference.
This does kind of raise the question as to why, if 328Ps were the only chips being sold why are there now 328s appearing on the market? It's either that Atmel decided to start production of the version with the faulty BODS after all or more likely (perhaps?) they'd originally made a load of 328's for some customer who's switched to 328P and Atmel have a load of the faulty ones they just dumped into distribution? |
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Posted: Sep 23, 2011 - 04:42 PM |
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Joined: Nov 20, 2009
Posts: 251
Location: Virginia
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DigiKey seems to have plenty of the plain 328's here in the Colonies, with the Dip package being the exception with no stock
[quote="clawson"]
Quote:
(and maybe other things)
This does kind of raise the question as to why, if 328Ps were the only chips being sold why are there now 328s appearing on the market? ?
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Gary - W4GNS
Tel: BR549
In my many years I have come to a conclusion that one useless man is a shame, two is a law firm and three or more is a congress. -- John Adams
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Posted: Sep 23, 2011 - 05:08 PM |
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Joined: Feb 12, 2005
Posts: 16307
Location: Wormshill, England
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The mega328P has a SIGRD bit. This does not work on my mega168, so I suspect that the mega328 has no SIGRD bit either.
In practice the two chips are interchangeable. However if you want to sleep with really low current consumption, the picoPower part is best.
I find it difficult to understand why the mega328 appeared after the mega328P. I would guess that they have the same die size, so why should they complicate their product inventory?
I suppose that the proud owners of the mega328 could try a few mega328P features e.g. BODSE, SIGRD, ... . If they work, it may be that Atmel had a lot of reject wafers, and decided to invent a new part number. I am assuming that Atmel are capable of altering the Signature row after wafer testing.
David. |
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Posted: Sep 23, 2011 - 05:28 PM |
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Joined: Sep 26, 2004
Posts: 78
Location: Stirling, UK
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One thing I've noticed is that the 88P will wake from sleep mode with an edge triggered INT0 interrupt (contrary to the datasheet), where the older 88 does not..
I only found out due to not paying enough attention to the datasheet, and then re-using code from a 88P project on a 88, but the 88P has been running happily that way for a couple of years on a hobby project here.. |
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Posted: Sep 27, 2011 - 02:04 AM |
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Joined: Sep 04, 2002
Posts: 21258
Location: Orlando Florida
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| Welcome Mr Colt. Fill in your city and state in your profile. Freaks near you might want to have a get together. (You in Florida by any chance?) |
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Imagecraft compiler user
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