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Altera_Forum
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15 years ago

Acex 1k Open Drain outputs

On Acex 1k device do I have to specifically disable the clamping diode to use an I/O pin as an open drain output with a pull-up to 5V? Data sheet Table 13 does not indicate any requirement to do thi...
Altera_Forum's avatar
Altera_Forum
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15 years ago

My guess is it doesn't, but I wouldn't care too much about the clamping diode being automatically disabled or not. Just go ahead and disable clamping specifically. In the worst case the setting would be redundant, but it would be harmless.