摘要:
Disclosed is a memory having a p-type semiconductor substrate having a high impurity concentration a p-type semiconductor layer is formed on thereof; a groove which is formed so as to extend from a surface of the semiconductor layer to a position inside the semiconductor substrate; an impurity diffused region which is formed on portions of the semiconductor layer and the semiconductor substrate which define the groove; and an electrode which is formed from the groove to level at least above an opening of the groove through capacitor insulation film, the impurity diffused region, capacitor insulation film and electrode constituting trenched capacitor in which the electrode serves first capacitor electrode and the impurity diffused region serves as a second capacitor electrode.
摘要:
A memory device having an operating function includes a memory cell array, a register, and a logical opeation circuit. The memory cell array has memory cells arranged in a matrix form of m rows .times.n columns. Data readout or write-in operation with respect to the memory cell array is effected in the unit of n bits of one row. The register has a bit width corresponding to one row of the memory cell array. Data of one row is read out from the memory cell array and is processed by the logical operation circuit together with data stored in the register. The result of operation is written into a desired row of the memory cell array. The memory cell array, register, and logical operation circuit are formed in the same integrated circuit, thus permitting processing such as picture element processing to be effected inside the integrated circuit, without the need to use an external data bus.
摘要:
A dynamic read-write random access memory (DRAM) including a memory cell, a word line and a bit line. The memory cell has a capacitor and a MOS transistor which has a gate connected to the word line, a drain terminal connected to the capacitor and a source terminal connected to the bit line. The DRAM further includes a supply circuit for applying to the bit line a voltage level having a value between the voltage level of the word line and the voltage level of the drain terminal of the MOS transistor when the memory cell is not selected, so as to prevent leakage current from flowing through the MOS transistor.
摘要:
A non-volatile memory cell has a pair of inverter circuits. In each inverter circuit, first and second insulated gate transistors of the first channel type and a third insulated gate transistor of the second channel type are serially connected in this order. The gates of the first transistor and the third transistor are commonly connected each other thereby to form an input terminal. A control terminal is formed at the gate of the second transistor. An output terminal is formed at either the source or the drain of the second transistor. The input terminal of one of the inverter is connected to the output terminal of the other inverter, while the output terminal of the former, to the input terminal of the latter. The control terminal is connected to a common control terminal. In this way, a complementary bistable circuit is formed. Non-volatile memory elements are connected to the connection points between the first and second transistors, respectively.
摘要:
A nonvolatile semiconductor memory having an insulated gate field effect transistor whose structure is so made as to permit, during the write operation, a substrate surface region below the gate to be substantially enclosed by depletion layers extended from the source and drain regions or by said depletion layers and a channel formed between said regions, thereby increasing a resistance between the substrate and said substrate surface region to decrease the writing current in amount and the writing voltage in level.
摘要:
A non-volatile random access memory system includes a memory array circuit having a plurality of unit non-volatile memory cells arranged in a matrix array. Each unit memory cell includes a flip-flop circuit and two MNOS transistors into which a data in the flip-flop is written and from which the data written therein is transferred to the flip-flop. The system also includes means for selecting a desired one of the unit memory cells and an input-output circuit adapted to supply a data to the selected unit cell and deliver the data read out of the selected unit cell. The system further includes a source voltage variation detector circuit adapted to deliver, when the source voltage for the memory array circuit is rendered ON, a control signal including a readout signal for reading the data in the MNOS transistors into the flip-flop or a source voltage variation detector circuit adapted to generate a control signal including a write signal for writing a data in the flip-flop circuit into the MNOS transistors when the source voltage is rendered OFF and a readout signal for reading the data in the MNOS transistors into the flip-flop circuit when the source voltage is rendered ON, and means for interrupting in synchronism with the control signal a data transfer path between the selected unit memory cell and the input-output circuit so as to prevent any influence from an external circuit when a data transfer is effected between the flip-flop circuit and the MNOS transistors.
摘要:
A nonvolatile counter circuit is disclosed which includes a nonvolatile insulated gate type field effect memory transistor interposed between the load and active elements of a flip-flop circuit. A switching element is connected in parallel with the memory transistor and a circuit is provided for returning information stored in the nonvolatile memory transistor to the flip-flop after the circuit power source has been turned on. A circuit is also provided for erasing the information stored in the nonvolatile memory transistor. A circuit element is provided for short-circuiting the switching element, and a circuit is provided for writing the information stored in the flip-flop circuit into the nonvolatile memory transistor at the transient of switching off the power.
摘要:
The dynamic memory device of the present invention is formed on an integrated semiconductor substrate subjected to alpha radiation and comprises a switching transistor having a switching terminal, an input-output terminal and a memory terminal; a bit line couple to said input-output terminal for supplying a charge to said transistor; a word line coupled to said switching terminal for controlling the switching of said transistor; and, an R-C circuit coupled to the memory terminal and comprising a charge storage capacitor for storing the charge supplied from said bit line and for substantially preventing loss of the stored charge due to particle radiation.
摘要:
A MOS type semiconductor device effectively supplying potential to a substrate region under the channel forming region of the MOS transistor on an insulating substrate. The potential is supplied to the one conductivity type substrate region under the channel forming region which is provided on an insulating substrate and has an extended portion extending in the channel length direction, through a substrate potential take-out region of one conductivity type connecting to the extended substrate. A gate electrode with an extended gate portion is formed on the substrate region through a gate insulating film, so as to cover the substrate region.
摘要:
A nonvolatile semiconductor memory device having a gate insulating film with a memory function. An impurity layer having the same conductivity type as that of the substrate region is formed in that substrate region, underlying the gate insulating film having a memory function, in which a channel is formed. The impurity layer has an impurity profile in which a peak of an impurity concentration is in the region distanced by 500 .ANG. or less from the surface of the substrate region and the impurity concentration is 1.times.10.sup.18 cm.sup.-3 or less in the region at the depth of 500 .ANG. or more.
摘要翻译:一种具有具有记忆功能的栅极绝缘膜的非易失性半导体存储器件。 在其中形成沟道的具有记忆功能的栅极绝缘膜下方的衬底区域中形成具有与衬底区域相同的导电类型的杂质层。 杂质层具有杂质浓度在距离衬底区域的表面远离500或更小的区域中的杂质分布,并且在深度的区域中杂质浓度为1×10 18 cm -3或更小 500 ANGSTROM以上。