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Koichiro ISHIBASHI Koichi TAKASUGI Kunihiro KOMIYAJI Hiroshi TOYOSHIMA Toshiaki YAMANAKA Akira FUKAMI Naotaka HASHIMOTO Nagatoshi OHKI Akihiro SHIMIZU Takashi HASHIMOTO Takahiro NAGANO Takashi NISHIDA
A 4-Mb CMOS SRAM with 3.84 µm2 TFT load cells is fabricated using 0.25-µm CMOS technology and achieves an address access time of 6 ns at a supply voltage of 2.7 V. The use of a current sense amplifier that is insensitive to its offset voltage enables the fast access time. A boosted cell array architecture allows low voltage operation of fast SRAM's using TFT load cells.