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Altera_Forum
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11 years ago

CycloneII I/O pin damage (Short to VCC)

Hi, History: I am using EP2C5T144C6N. The pin 92 of this device is being damaged often (10%). The FPGA is 3.3 for I/O and 1.2 for internal. This pin (92) is connected to another device...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

Answers:

1) You'll have to look to your local Altera distributor for help if you wish to return the parts and have them analysed. However, don't expect them to identify what is causing the damage - they will only be able to identify what sort of damage has occurred: e.g. static damage, over current damage...

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These two devices also have different ground which are tied at Chassis

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2) This doesn't sound helpful! I'd suggest that this arrangement is resulting in excessive voltage being applied to pin 92 when the system is being powered on. This is by no means an absolute answer but without more info it's very difficult to say.

Cheers,

Alex