Programmable Devices
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Memories No Connection (NC) Pin

Altera_Forum
Honored Contributor II
‎11-29-2011 03:10 PM
1,120 Views

Hi everybody, 

 

I am designing a PCB with a Cyclone III and a SDRAM memory. I have seen that for the SDRAM exists different memory schemes configurations and different sizes. But the SDRAM package is the same (54 tsop2). In some configurations appear more NC ( no connection) pins.  

 

Is it possible to route these pins to the FPGA and change the memory type without no problem?  

 

What happens if I connect a NC pin to VCC?  

 

I have read the datasheets and nothing appears in relationship of these pins. 

 

Many thanks. 

 

ifdm
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Altera_Forum
Honored Contributor II
‎11-29-2011 08:23 PM
414 Views

I had to connect some high address pins to gnd in fpga, but the memory works fine.

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