ROB LUND

output pin state at power up

Discussion created by ROB LUND on Sep 6, 2006
Latest reply on Sep 6, 2006 by Mark Hotchkiss
Hey gang,

Does anyone know how to set the level of output pins during power up? For instance, I have a few outputs which crucially must remain low during power up until I set them as outputs, and start to use them.

If memory serves, back in the 68HC11 days one had to set the pins in question to the desired state before setting their direction registers.

I've done this (setting pins low before their DDRs) and somewhat arbitrarily one of my outputs wants to float high while another floats low.

Any ideas?

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