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TIE CELL
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关于tie cell，我刚入职不久时，曾有幸听过台湾那边的大神详细的解释和介绍，只怪自己当时太“嫩”，没有听懂，还装B不做笔记，真是后悔啊，现在只能自己去找资料了。。。
icc是这么解释的：
In some designs, unused input pins cannot be tied directly to the power or
ground net and tie-high, tie-low, or tie-highlow cells must be used。
ground net and tie-high, tie-low, or tie-highlow cells must be used。
操作对象是unsed input pin，就是input pin什么都不接时，必须要给input pin
一个high/low 的电位。
从器件的角度去看tie cell:
tie cell的版图构造和管级电路图结构，需要去查查相关的书籍资料。。。（未完待续）
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- 回复 ivochoxr11
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