fahadislam2002
Joined: 14 Jul 2005
Posts: 22
Location: Lahore (Pakistan)
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 Posted:
Wed Oct 12, 2005 12:17 pm Post subject:
How to Reduce Interconnects (VDD and VSS) |
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Hi...
I am using an 32MB SDRAM Unbuffered Module of Micron in my project.It has 168 pins.
First i got a module having 18 Chips on it.So it was having one VDD and one VSS for each Chip (So a total of 36 Pins).
So to Reduce number of Power and Ground pins i got another SDRAM module having only Four Chips.But still it also have 36 Pins.
Confusion
Now i m a little Confused about that while these pins (of VSS and VDD) are by internally connected in SDRAM Module or i have to connect each one of them seperatly with VSS and VDD.
Confusion Counter parts
It looks that as pins of are seperatly present so i have to connect them seperatly in my PCB...........On the other hand it looks that,,,as Pins are internally connected in SDRAM module so to apply VDD and VSS on any two pins is sufficient....  .....what you think 
Why to Reduce Pins
I want to Reduce Pins as i have to make PCB for its Banq(Slot).
And to make my PCB simple and to make it possible on Single Layer (To Reduce Cost  ).and also its not possble to do it on a single sided PCB with too much pins .
Required
1-Plz Suggest about confusion using your experience , knowledge, logic and Observation.
2-Plz suggest some other solution...
Thanks |
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