Morrison & Foerster LLP
Semiconductor memory device and portable electronic apparatus
A semiconductor memory device including: a memory cell array in which memory cells are arranged; a plurality of terminals for accepting commands issued by an external user; a command interface circuit for interfacing between the external user and the memory cell array; a write state machine for controlling the programming and erasing operations; and an output circuit for outputting an internal signal to the plurality of terminals, 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
G G G G
G11C G11C G11C G11C
inventional inventional additional inventional
Masaru Akihide Yoshinao Koji Hiroshi
Nawaki Shibata Morikawa Hamaguchi Iwata