Give 5 Important Design Techniques You Would Follow When Doing A Layo

1.	Give 5 Important Design Techniques You Would Follow When Doing A Layout For Digital Circuits?
Answer» In digital design, decide the height of standard cells you want to layout.It DEPENDS upon how big your transistors will be.Have reasonable width for VDD and GND metal paths.Maintaining uniform Height for all the cell is very important since this will help you use place route tool easily and also incase you want to do MANUAL connection of all the blocks it saves on LOT of area. Use one metal in one direction only, This does not apply for metal 1. Say you are using metal 2 to do horizontal connections, then use metal 3 for VERTICAL connections, metal4 for horizontal, metal 5 vertical etc... Place as many substrate contact as possible in the empty spaces of the layout. Do not use POLY over long distances as it has huge resistances unless you have no other choice. Use fingered transistors as and when you feel necessary. Try maintaining symmetry in your design. Try to get the design in BIT Sliced manner.

Give 5 Important Design Techniques You Would Follow When Doing A Layout For Digital Circuits?

Answer»

In digital design, decide the height of standard cells you want to layout.It DEPENDS upon how big your transistors will be.Have reasonable width for VDD and GND metal paths.Maintaining uniform Height for all the cell is very important since this will help you use place route tool easily and also incase you want to do MANUAL connection of all the blocks it saves on LOT of area.
Use one metal in one direction only, This does not apply for metal 1. Say you are using metal 2 to do horizontal connections, then use metal 3 for VERTICAL connections, metal4 for horizontal, metal 5 vertical etc...
Place as many substrate contact as possible in the empty spaces of the layout.
Do not use POLY over long distances as it has huge resistances unless you have no other choice.
Use fingered transistors as and when you feel necessary.
Try maintaining symmetry in your design. Try to get the design in BIT Sliced manner.