Morrison & Foerster LLP
Semiconductor memory device and portable electronic apparatus
The present invention provides a semiconductor memory device including a memory cell array in which a plurality of memory cells are arranged, a user interface circuit including a command queue having a logic circuit for accepting commands issued by an external user and generating a program memory address, and an array control circuit having a microcontroller and a program memory for storing therein an execution code, and executing an operation on the memory cell array, wherein the memory cell includes a gate electrode formed over a semiconductor layer via a gate insulating film, a channel region disposed below the gate electrode, diffusion regions disposed on both sides of the channel region and having a conductive type opposite to that of the channel region, and memory functional elements formed on both sides of the gate electrode and having the function of retaining charges.
Sharp Kabushiki Kaisha
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G11C G11C G11C H01L H01L H01L
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Hiroshi Akihide Nobuaki Yoshinao Masaru
Iwata Shibata Matsuoka Morikawa Nawaki