On 17 Feb 2003, at 23:00, Jinx wrote:

> Attached pic is typical of the SX behaviour - the port pins simply
> will not reliably turn off when told to or, in this case, one actually
> turns off prematurely. As noted before (see OP for setup) it is not
> related to speed or pin terminations.

Hi,
I did not spot any references to speed in the posts in the archive - have you
tried it with a 4MHz xtal?

The pcb recomendations include ground plane under the chip (guessing you
won't have that yet) but this would not matter at 4MHz.


George Smith

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