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[Author] Jae-Eun YOON(1hit)

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  • A 2-Mb 1T1C FeRAM Prototype Based on PMOS-Gating Cell Structure

    Yeonbae CHUNG  Jung-Hyun KIM  Jae-Eun YOON  

     
    PAPER-Ferroelectric Memory

      Vol:
    E87-C No:10
      Page(s):
    1686-1693

    This paper proposes a new FeRAM design style based on grounded-plate PMOS-gate (GPPG) cell structure. A GPPG cell consists of a PMOS access transistor and a ferroelectric capacitor. Its plate is grounded. The proposed scheme employs three novel operating methods: 1) VDD precharged bitline, 2) negative-voltage wordline technique and 3) negative-pulse restore. Because this configuration doesn't need the on-pitch plate control circuitry, it is effective in realizing cost-effective chip sizes. Implementation of a 2.5-V, 2-Mb FeRAM prototype design in a 0.5-µm technology shows a cell array efficiency of 57%, an access time of 85 ns and an active current of 12 mA, respectively.