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Altera_Forum
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17 years ago

Cyclone3 Power Up level doesn't work

A design with an EP3C40F324I7 has the pin U18 as an registered output. This pin is used to control another dcdc's nSHDN (Shutdown negativ logic) The fpga is configured via epcs. this dcdc is ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

I guess, you can calculate, that 470 ohms and 10 uF would also enable the originally intended softstart function. The capacitor value is available down to 0402, if required.