Routing ispLattice chips

Jun 15, 2006 2 Replies

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Den 20 years ago

Hi, I'm routing a board with some ispLattice chips on. Those chips come with

2 GND pins, and 2 VCC pins. Do I need to route the four pins, instead of just one GND and one VCC ?

Thanks in advance, Den

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colin_toogood 20 years ago

Take a look at the virtex 5 FPGAs from xilinx. About one pin in four is a gnd. There are very good reasons for this

colin

Den wrote:

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Leon 20 years ago

They are both needed.

I would give each pair its own decoupling capacitor.

Leon

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