Re: why do we need different mental layers for CMOS technology?

On 19 Apr 2007 12:40:14 -0700, lixiaoyao <liletian@xxxxxxxxx> wrote:

Hi all
I have a few confusion about CMOS mental layer,
First, why do we need different mental layer in CMOS techonlogy?
Like Mental 1, mental 2, it seems mental 1 is enssence and I do not
know what is the usage of mental 2. It seems there exists mental layer
3 in mosis and have 8 or 9 mental layer for inter or AMI, can anyone
explain what is the advantage of them. What is the usage of different
mental layers?
Second, In fact, which mental layer connects the outside circuit? I
guess it is mental 3 in mosis, am I right?
Thanks a lot

Just like a multilayer PC board. You need lots of layers to make all
the interconnects and do the power and clock distribution.

John

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