Basic pin question

meenbombs · Post by **meenbombs** » 27 November 2009, 7:42 AM

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.

mikep · Post by **mikep** » 27 November 2009, 8:27 AM

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.

meenbombs · Post by **meenbombs** » 27 November 2009, 22:09 PM

Thanks Mike. As always, first rate support.