AVR-Chat

At 06:41 AM 4/04/2006, you wrote:
>* I definately had the pins on the AVRs configured as outputs.

I can't remember your original post...so you are saying that the
Data Direction Register (DDRx) is set at 0xff (all 1)

>* The same fault occured with both 74HC and 74LS chips, but only on
>    my newer batches of Mega16s and Tiny26s.

Very strange seeing that the typical HC chip has an input load
of several MEGA Ohms (ie no current used) the LS has an input load
of several Kilo Ohms (input current <<1ma) and any AVR can sink or
source up to 20ma!! A stupid question I know but are you sure ALL
your ground pins on the chip are going to 0V? Have you measured it?


Regards

John Samperi

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