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Altera_Forum
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7 years ago

Can I use this trick for CPLD MAX V small MBGA package

Hello, I have designed a small board with a CPLD MAXV MBGA package(5M80ZM68I5) since I did not use all the pins and I did not want to use high tech board production which is expensive I u...
Altera_Forum's avatar
Altera_Forum
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7 years ago

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User I/O pins of an unprogrammed device should be high impedance.

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More exactly tri-stated with weak pull-up, up to 300 µA input current per pin according to datasheet. This should still allow JTAG operation, I rather suspect a solder fault or defective device.