Changes between Version 4 and Version 5 of Prototype/One


Ignore:
Timestamp:
07/05/10 19:16:02 (14 years ago)
Author:
art
Comment:

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  • Prototype/One

    v4 v5  
    1414[[Image(http://www.tevs.eu/media/images/projects/openbm/DSCI2948.JPG.small.jpg, 400px)]] 
    1515 
    16 The board is driven by an [http://www.atmel.com/dyn/resources/prod_documents/doc2503.pdf ATmega32] uC with 32K flash memory by 14MHz. As connection to BMW's bus-system (i.e. I-Bus) I am using [http://www.google.de/url?sa=t&source=web&cd=1&ved=0CBkQFjAA&url=http%3A%2F%2Fwww.melexis.com%2FAsset%2FTH3122_Datasheet_DownloadLink_4788.aspx&ei=ZREyTKn2EoetONrvqfAB&usg=AFQjCNFLf0Z4rJZiAKVNMJYI394pmVMHSg TH3122] chip from Melexis. 
     16The board is driven by an [http://www.atmel.com/dyn/resources/prod_documents/doc2503.pdf ATmega32] uC with 32K flash memory running at 4.4MHz. As connection to BMW's bus-system (i.e. I-Bus) I am using [http://www.google.de/url?sa=t&source=web&cd=1&ved=0CBkQFjAA&url=http%3A%2F%2Fwww.melexis.com%2FAsset%2FTH3122_Datasheet_DownloadLink_4788.aspx&ei=ZREyTKn2EoetONrvqfAB&usg=AFQjCNFLf0Z4rJZiAKVNMJYI394pmVMHSg TH3122] chip from Melexis. 
    1717 
    1818After trying several things, I just didn't came up to a good result, because this amount of cables was just unhandable. The comparison of the PDIP and TQFP package of the same uC shows the differences, so I had to get everything smaller, otherwise the project will not survive. In the right part of the image, you can see the differences in sizes between TQFP and PDIP package of the ATmega32 microcontroller: