網路上查到的.參考一下:$ f7 V0 v+ ^% B2 k1 B: j
"Diffusion ROM is based on VT change (using VT implant mask) => Hihg VT transistors not conducting, low VT ones conducting & [. i8 R! f$ l" TVIA ROM is using via to "connect" or "not connect", resulting 0 and 1 ( l3 m* {8 S4 j o! E
VIA ROM may have bigger cell size "
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發表於 2008-5-30 16:57:51
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