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Altera_Forum
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12 years ago

Cyclone V 3v3 pins

Hello, My name is Jonathan, I am new with altera. I have a Cyclone V Development kit. I have connected a 3V3 input (from an UART) in a 2V5 pin (HSMA_D0 (K16)). I am going crazy becau...
Altera_Forum's avatar
Altera_Forum
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12 years ago

No, the reason for the crash is not the because a 3.3V signal is being driven into a pin on a 2.5V I/O bank. Refer to the Maximum Allowed Overshoot and Undershoot Voltage on page 3 of the cyclone v device datasheet (http://www.altera.com/literature/hb/cyclone-v/cv_51002.pdf).

You need to continue looking for a fault in your code - or post something here for others to consider...

Regards,

Alex