could someone advice me when design from .35u to .25u ?

[etrobin]

dear friends,

I am new to ASIC design ...
and I was curious about what kind of process should I choose when my RTL design finish(<100K)? can someone give me some suggestion? or tell me where can I get information?
I just want to learn more, thank you for help!!!

have a good time!!!!

 

[armer]

.35 .25

When the design is small, You should use .35. because .35 is cheap.
I compare the design between .18 and .25. the die size of the chip will much smaller and the timing is much better. but .18 is much costly!!

 

[lipton]

for such small design 0.35u will probably be cheaper unless you plan to produce over 50000 chips.

 

[asicplace]

You might also be constrained by clock speed. 0.25um is around 20%-40% faster (higher clock frequency) than 0.35 um. As the other posts have mentioned, costs (especially mask making) are higher at 0.25um