A 90 nm generation logic technology with Cu/low-k interconnects is reported. 50 nm transistors are employed using gate oxide 1.3 nm in thickness and operating at 1.0 V. High speed transistors have drive currents of 870 /spl mu/A/pm and 360 /spl mu/A//spl mu/m for NMOS and PMOS respectively, while generic transistors have currents of 640 /spl mu/A//spl mu/m and 260 /spl mu/A//spl mu/m respectively. Low power process using high-k gate dielectrics and SOI process are also provided in this technology. The low-k SiOC material with 2.9 in the k value is used for 9 layers of dual damascene Cu/low-k interconnects. The effective k (k/sub eff/) value of interconnect is about 3.6. Fully working 6-T SRAM cell with an area of 1.1 /spl mu/m/sup 2/ and SNM value of 330 mV is obtained. For MIM capacitor, voltage coefficient of capacitance is less than 20 ppm/V.
