MOS semiconductor device with memory cells each having storage c

Details MOS semiconductor device with memory cells each having storage c MOS semiconductor device with memory cells each having storage c

1992-07-02

1994-03-29

LaRoche, Eugene R.

Static information storage and retrieval

Systems using particular element

Capacitors

36518909, G11C 1124

Patent

active

052991547

ABSTRACT:
A MOS dynamic random access memory includes a plurality of pairs of bit lines, and word lines transverse to the bit lines to define cross points, at which an array of memory cells are arranged. Each cell has a storage capacitor and a transfer gate MOS transistor having a gate electrode coupled to a word line and being connected between the capacitor and a bit line. Sense amplifier circuits are connected to the bit line pairs, and have a first and a second common source line. A decoder and a word line driver are connected to the word lines. A MOS transistor is connected between the power supply voltage and the first common source line, for selectively supplying it with a first voltage which potentially defines a high-level voltage for the bit line pairs. A voltage generator is connected through a MOS transistor to the second common source line, for generating a second voltage which potentially defines a low-level voltage for the bit line pairs, and which is selectively supplied to the second common source line. The second voltage is greater in potential than the ground potential, which is employed as a source voltage.

REFERENCES:
patent: 4368529 (1983-01-01), Furuyama
patent: 4636981 (1987-01-01), Ogura
patent: 4780850 (1988-10-01), Miyamoto
patent: 5113372 (1992-05-01), Johnson
patent: 5151878 (1992-09-01), Yamada

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