摘要:
A semiconductor memory device is proposed wherein at least an array comprising a plurality of memory cells each having at least one capacity, a select mechanism for specifying the position of each memory cell, data lines connected to said memory cells for transmitting the data and a data writing and a data reading mechanisms are provided. The feature of this device lies in that the voltage generator for serially generating three or more values of the voltage which are different from each other and the means for applying said voltage to said memory cells are provided on the same semiconductor board as the same said memory cells, and as the said reading mechanism the column register is provided which, as said reading mechanism, has the mechanism for deciding the data, transfer gate which is provided between said deciding means and said data line, and the bias charge transfer mechanism which is provided between said transfer gate and said deciding mechanism, and having at least two or more memory elements for temporarily storing said decided data.
摘要:
In a semiconductor memory includes a memory array consisting of a plurality of memory cells respectively having at least one storage capacitor, an addressing circuit which designates location of each memory cell, data lines which transmit data connected to said memory cells and data writing and reading circuits connected to said data lines. The semiconductor memory has a multiple level storage structure. In particular, the memory includes an arrangement for sequentially applying, on a time series basis, different voltages of at least 3 levels or more to the gate of a switching MOS transistor of said memory cells, a bias charge supplying means as said data reading circuit and a column register providing at least two or more storage cells which temporarily store said data.
摘要:
A semiconductor memory having an error correcting function is provided, which has a device by which the user finds no difficulty in making use of the semiconductor memory and can test it with ease. In the semiconductor memory, a signal indicative of the completion of the preparation for reading/writing is outputted from the memory so that the user, after detecting the output of this signal, performs reading/writing data. To facilitate tests, such as a memory cell test for a redundant bit (check bit), an encoding circuit test and a decoding circuit test, the present invention provides that the arranged tests can be made independently of each other.
摘要:
In a semiconductor memory for reading and writing of stored charge in an X-Y address system by arranging a plurality of memory cells each including a capacitance element and one MOS-FET in matrix, this invention discloses a semiconductor memory using multiple level storage structure for read and write of at least more than two multi-level data stored in the capacitance elements, by applying a multi-level step voltage to the plate electrode of the capacitance or to the gate electrode of MOS-FET so as to write and read signal charge.
摘要:
In a semiconductor memory in which a large number of memory cells are arrayed in the shape of a matrix, arrangements are provided for a high-sensitivity read-out. In one embodiment, a writing circuit, a voltage amplifier and a sense amplifier are successively connected to a data line that connects input and output ends of the memory cells in an identical row, with the voltage amplifier being formed as a CTD voltage amplifier that is composed of two charge transfer gates and a driving gate located between them. In accordance with another embodiment, a charge supplying circuit and a charge transfer circuit can be coupled between the memory cells and the sense amplifier to allow information transfer without any substantial loss.
摘要:
A static random access memory cell in which capacitors are electrically connected to storage nodes, so that the memory cell will not suffer from soft error even when it is hit by alpha particles. The memory cell has MOS transistors, capacitors constituted by two polycrystalline silicon layers, and resistors constituted by a polycrystalline silicon layer, that are formed on a semiconductor substrate.
摘要:
A programmable semiconductor integrated circuitry including a circuit programming element is disclosed. The circuit programming element can be activated in a short-circuit mode by the irradiation of a laser or electron beam or by ion implantation so that it is converted from its original nonconductive state into a conductive or conductable state, thereby providing electrical connection between circuits and/or circuit elements of the integrated circuitry for a desired circuit programming such as circuit creation, circuit conversion or circuit substitution.
摘要:
A semiconductor memory comprises a capacitor with a data storage portion, and an insulated-gate field-effect transistor. The capacitor is formed by a plate which is made up of the side walls and base of a groove formed in a semiconductor substrate, and by a capacitor electrode formed on the side walls and the base, over an insulation film, and which is connected electrically to the source or drain of the insulated-gate field-effect transistor. Various embodiments are provided for reducing size and preventing leakage between other memory cells, including forming stacked capacitors, forming the transistor over the capacitor, using a silicon-over-insulator arrangement for the transistor, forming a common capacitor plate and providing high impurity layers within the substrate.
摘要:
A semiconductor memory comprises a capacitor with a data storage portion, and an insulated-gate field-effect transistor. The capacitor is formed by a plate which is made up of the side walls and base of a groove formed in a semiconductor substrate, and by a capacitor electrode formed on the side walls and the base, over an insulation film, and which is connected electrically to the source or drain of the insulated-gate field-effect transistor. Various embodiments are provided for reducing size and preventing leakage between other memory cells, including forming stacked capacitors, forming the transistor over the capacitor, using a silicon-over-insulator arrangement for the transistor, forming a common capacitor plate and providing high impurity layers within the substrate.
摘要:
A semiconductor static random access memory having a high .alpha.-ray immunity and a high packing density is provided which is also capable of high-speed operation. A semiconductor memory device comprises static random access memory cells each including a flip-flop circuit. Storage nodes of each flip-flop circuit have respective pn-junctions formed at regions sandwiched between gate electrodes of first insulated gate field effect transistors and gate electrodes of second insulated gate field effect transistors, respectively. The pn-junction has an area smaller than that of a channel portion of the first or second insulated gate field effect transistor. The gate electrode of one of the two first insulated gate field effect transistors and the drain region of the other insulated gate field effect transistor, on one hand, and the drain region of the one insulated gate field effect transistor and the gate electrode of the other insulated gate field effect transistor, on the other hand, are electrically cross-coupled mutually through first and second electrically conductive films, respectively. Also, to increase packing density and enhance immunity to soft error, the gate electrodes of the first and second insulated gate field effect transistors extend substantially in parallel with one another and the channel regions of the first and second insulated gate field effect transistors extend substantially in parallel with one another.