Amsterdam, Netherlands: The Taiwan Semiconductor Manufacturing Company (TSMC) claims it’s successfully developed the first 28nm low-power technology. Consequently, it continues the scaling trend and extends silicon oxynitride (SiON)/poly usage beyond 32nm with a dual/triple gate-oxide process.
Other characteristics from this technology include high density and low VCC_min 6-T SRAM cells, low leakage transistors, proven conventional analog/RF/electrical fuse components, and low-RC Cu-low-k interconnect. TSMC presented the development in a technical paper at the Symposia on VLSI Technology and Circuits in Kyoto, Japan.
The paper reported good 64Mb SRAM functional yield with a competitive cell size of 0.127μm(2), and a raw gate density as high as 3900kGate/mm(2) in this 28nm dual/triple gate oxide SoC technology. Good SRAM VCC_min, electrical fuse, and analog performance have also been achieved, thus proving the manufacturability of this technology.