When TSMC and Mentor Graphics held a joint seminar for mutual customers to go over new DFM requirements at 45/40 nm, two customers basically asked the same question, “What do you mean by mandatory?” Of course, TSMC wasn’t going to stand over them and say, “Mandatory means mandatory, what part of mandatory don’t you understand?” :=) TSMC admitted that they hadn’t yet changed the tape-out checklist to forcibly include the DFM checks (CMP and LPC). This is what begs the question, what do you mean by mandatory?
Continue reading “What Do You Mean by Mandatory?”
What Do You Mean by Mandatory?
When TSMC and Mentor Graphics held a joint seminar for mutual customers to go over new DFM requirements at 45/40 nm, two customers basically asked the same question, “What do you mean by mandatory?” Of course, TSMC wasn’t going to stand over them and say, “Mandatory means mandatory, what part of mandatory don’t you understand?” :=) TSMC admitted that they hadn’t yet changed the tape-out checklist to forcibly include the DFM checks (CMP and LPC). This is what begs the question, what do you mean by mandatory?
Continue reading “What Do You Mean by Mandatory?”
How to Multi-Voltage IC Design in 10 Easy Steps
What I’m really describing here is an over-simplified backend flow for physical design of low power ICs with multiple voltage domains. If you haven’t ventured into this territory yet, this will hopefully give you some food for thought. Here are the basic steps:
Continue reading “How to Multi-Voltage IC Design in 10 Easy Steps”
Clocks Will Be Clocks
Clock designers are an enigma. Clock designers in general are die hard Star Wars fans, own vintage Porsches that leak oil by the gallon, usually have lava lamps in their offices/cubicles, wear fancy leather jackets in the peak of summer, and have like-minded clock designers as best lunch buddies. Continue reading “Clocks Will Be Clocks”
Why Only MV When You Can MC, MM & MV?
Resistance is futile. I recently caved and switched to an iPhone after having been a loyal Google phone user for more than year. Apart from the coolness factor, my main motivation was corporate mail support that was absent in Gphone, plus the fact that I got the iPhone for free when my wife upgraded hers. The difference is day and night between the two phones – The iPhone UI is much friendlier, menu options are simple and logical and the device is much faster for certain applications like browsing, data download, and video capture. Most of the modern smart phones/PDA are increasingly employing the multi-voltage technique, specifically ‘dynamic voltage and frequency scaling’ (DVFS) to reduce power without sacrificing performance. The iPhone designers, unlike the Gphone have done a good job of creating this balance between the different applications running on the device.
Continue reading “Why Only MV When You Can MC, MM & MV?”
How to Multi-Voltage IC Design in 10 Easy Steps
What I’m really describing here is an over-simplified backend flow for physical design of low power ICs with multiple voltage domains. If you haven’t ventured into this territory yet, this will hopefully give you some food for thought. Here are the basic steps:
Continue reading “How to Multi-Voltage IC Design in 10 Easy Steps”
So, Why Not Just Write Better Rules?
In my submission about TSMC making some DFM analysis steps mandatory at 45nm (see “TSMC’s DFM Announcement”), I ended with a question about why the foundries can’t just write better design rules (and rule decks) to make sure all designs yield well. Here’s my take on this complicated question.
Continue reading “So, Why Not Just Write Better Rules?”
TSMC’s DFM Announcement
If you are a TSMC customer, no doubt you have heard TSMC is requiring lithography and planarity analysis for all 45nm designs. Their website says customers can either run it themselves, or contract TSMC services to do it. The most cost-effective way would be for the customers to run it themselves, but some might not have the resources to do that. Of course, by the time you pay TSMC to do it 3 or 4 times, you could have bought some tools and run it yourself. That’s good for Mentor and other EDA vendors, right? Probably, but there has to be more to it than that.
Continue reading “TSMC’s DFM Announcement”
So, Why Not Just Write Better Rules?
In my submission about TSMC making some DFM analysis steps mandatory at 45nm (see “TSMC’s DFM Announcement”), I ended with a question about why the foundries can’t just write better design rules (and rule decks) to make sure all designs yield well. Here’s my take on this complicated question.
Continue reading “So, Why Not Just Write Better Rules?”
TSMC’s DFM Announcement
If you are a TSMC customer, no doubt you have heard TSMC is requiring lithography and planarity analysis for all 45nm designs. Their website says customers can either run it themselves, or contract TSMC services to do it. The most cost-effective way would be for the customers to run it themselves, but some might not have the resources to do that. Of course, by the time you pay TSMC to do it 3 or 4 times, you could have bought some tools and run it yourself. That’s good for Mentor and other EDA vendors, right? Probably, but there has to be more to it than that.
Continue reading “TSMC’s DFM Announcement”