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Basic pin question

 
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meenbombs



Joined: 20 Nov 2008
Posts: 27
Posted: 27 November 2009, 15:42 PM    Post subject: Basic pin question Reply with quote
I have a question about the ZX-32. The suggested circuit guide and the datasheet from ATMEL show several pins to provide Vdd and Vss. Do each of those pins need to be connected or can you pick one? Come to think of it, I have the same question for the ZX-328. Thanks in advance.
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mikep



Joined: 24 Sep 2005
Posts: 765
Location: Austin, TX
Posted: 27 November 2009, 16:27 PM    Post subject: Reply with quote
The simple answer is yes. Each pin should be fed from Vdd and Vss - do not route power through the chip. It is a good idea to also put a 100n filter cap across each pair of supply wires. Also don't forget to connect AVcc and AREF. See appendix G of the ZBasic Reference for more details.
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meenbombs



Joined: 20 Nov 2008
Posts: 27
Posted: 28 November 2009, 6:09 AM    Post subject: Reply with quote
Thanks Mike. As always, first rate support.
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