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IC Design

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For more VLSI information, please visit http://www.pythonclub.org/vlsi/start

FITS / Failures in Time

Failure In Time (FIT) method of specifying component reliability. The FIT rate is defined as the expected number of component failures per 10^9 (ten to the ninth power, or 1,000,000,000) hours. The FIT rate can be converted immediately to the MTBF (Mean Time Between Failures) in hours as MTBF = 10^9/FIT. The Annualized Failure Rate (AFR) can be calculated as AFR = (FIT * 8760)/109.

What is minimum period check

Minimum period of the clock input of a .lib can be checked in Synopsys Primetime tool.

半导体芯片封装相关的温度和散热参数Theta-ja

在估算芯片功耗的时候,会遇到2个温度参数:Junction Temperature和Ambient Temperature.百度了一把,发现了如下的定义:

REFIO Related Terms

Just check the REFIO reference documents, and following are some terms used in the document. 

ICC Command to Report Crosstalk

Just keep a note:

report_net_delta_delay -clock_net –threshold 0.01

Acronyms in ASIC Design

The chipmakers use many technical terms in their day to day work, but in abbreviated forms. Beginners find it difficult to get along with these abbreviations unlike others. The Saint gathered and created a glossary of many acronyms that are frequently used in IC design industry.

How to Read SPEF File

SPEF (Standard Parasitic Exchange Format) is documented in chapter 9 of IEEE 1481-1999. Several methods of describing parasitics are documented, but we are discussing only few important one.

2013盘点EDA布局布线工具 (ZZ)

只用过Synopsys的Tool,看到有人做了个后端工具的比较,感觉评价还比较靠谱,转之。

Synchronizer And Synchronization

Synchronizer is a special logic in ASIC design. In phsysical design, synchronizer pair need to be placed together.

真正的芯片Chip

我主要做IC的Layout,很多人搞不懂Layout是什么,那就只能说是做芯片的,还是有人不明白。送上芯片的解剖图!

这个芯片是出差时同事给的,据说市场上要卖150美刀,当然这个是废片。