Other

Mitsubishi Denki Kabushiki Kaisha

Hiroki Sugano

Kazutami Arimoto

Hiroki Shimano

Katsumi Dosaka

Junji Mori

Yasuhiro Ishizuka

Takashi Tatsumi

Seizou Furubeppu

The semiconductor circuit includes a driver that is input with a signal, a driver that is input with a signal, and a driver of which input terminal is connected to output terminals of both the drivers, and of which output terminal is connected to input terminals of both the drivers.

Semiconductor circuit and semiconductor device

A semiconductor integrated circuit in which a logic and a memory are merged, includes a voltage generation unit for generating two or more internal power supply voltages based on two or more external power supply voltages supplied from outside the voltage generation unit with different timings and for furnishing the plurality of internal power supply voltages to the memory. The voltage generation unit includes a standby unit with a small current-feed ability that is always activated, for generating the plurality of internal power supply voltages, and an active unit with a large current-feed ability that is activated as needed, for generating the plurality of internal power supply voltages. An activation control unit prevents the active unit from being activated until all of the plurality of external power supply voltages rise.

Semiconductor merged logic and memory capable of preventing an increase in an abnormal current during power-up

A dummy bit line is formed from the same layer as and separately from a bit line, and is running in parallel with the bit line. Capacitor is formed on the layer upper than bit line and has a cell plate. An intermediate interconnection is formed on the layer upper than capacitor and is electrically connected to cell plate and dummy bit line. Thus, a semiconductor memory device is obtained in which a cell plate voltage can reliably be fed to a cell plate while preventing the increase of the area of a chip.

Semiconductor memory device

Growing community of inventors

Tokyo, Japan

Hiroki Sugano