摘要:
An electronic timer having a parallel unit, a current detecting unit, and a time measuring unit. The parallel unit is formed of a plurality of aging devices connected in parallel and configured to be turned on or off for a predetermined time after storing electric charges. Each aging device is a transistor which includes a floating gate. The current detecting unit detects a sum current flowing in the parallel unit when a voltage is applied between input and output terminals of the parallel unit. The time measuring unit measures a time required to resume the supplying of power after the interruption of power supplying, from the sum current detected by the current detecting unit.
摘要:
It is made possible to provide a memory device that can be made very small in size and have a high capacity while being able to effectively suppress short-channel effects. A nonvolatile semiconductor memory device includes: a first insulating film formed on a semiconductor substrate; a semiconductor layer formed above the semiconductor substrate so that the first insulating film is interposed between the semiconductor layer and the semiconductor substrate; a NAND cell having a plurality of memory cell transistors connected in series, each of the memory cell transistors having a gate insulating film formed on the semiconductor layer, a floating gate formed on the gate insulating film, a second insulating film formed on the floating gate, and a control gate formed on the second insulating film; a source region having an impurity diffusion layer formed in one side of the NAND cell; and a drain region having a metal electrode formed in the other side of the NAND cell.
摘要:
It is made possible to provide a memory device that can be made very small in size and have a high capacity while being able to effectively suppress short-channel effects. A nonvolatile semiconductor memory device includes: a first insulating film formed on a semiconductor substrate; a semiconductor layer formed above the semiconductor substrate so that the first insulating film is interposed between the semiconductor layer and the semiconductor substrate; a NAND cell having a plurality of memory cell transistors connected in series, each of the memory cell transistors having a gate insulating film formed on the semiconductor layer, a floating gate formed on the gate insulating film, a second insulating film formed on the floating gate, and a control gate formed on the second insulating film; a source region having an impurity diffusion layer formed in one side of the NAND cell; and a drain region having a metal electrode formed in the other side of the NAND cell.
摘要:
According to one embodiment, a nonvolatile semiconductor memory device includes fin-type stacked layer structures. Each of the structures includes semiconductor layers stacked in a perpendicular direction. Assist gate electrodes are disposed in an in-plane direction and divided on a surface in the perpendicular direction of the structures.
摘要:
A neuron device includes: a semiconductor layer; source and drain regions formed in the semiconductor layer at a distance from each other; a protection film formed on an upper face of the semiconductor layer; a channel region formed in the semiconductor layer between the source region and the drain region; a pair of gate insulating films formed on two side faces of the channel region; a floating gate electrode including: a first portion covered on the gate insulating films and the protection film; a second portion connected to the first portion; and a third portion provided on the substrate so as to connect to the end portion of the second portion on the opposite side from the first portion; an interelectrode insulating film provided on the first to third portions; and a plurality of control gate electrodes provided on the third portion.
摘要:
A circuit according to embodiments includes: a plurality of bit-string comparators each of which includes a plurality of single-bit comparators each of which includes first and second input terminals, first and second match-determination terminals, and a memory storing data and inverted data in a pair, the first input terminal being connected to a respective search line, the second input terminal being connected to an inverted search line being paired with the respective search line, and a matching line connecting the first and second match-determination terminals of the single-bit comparators; a pre-charge transistor of which source is connected to a supply voltage line; a common matching line connected to a drain of the pre-charge transistor and the matching lines of the bit-string comparators; and an output inverter of which input is connected to the common matching line.
摘要:
One embodiment provides a content addressable memory, including: a pair of spin MOSFETs including: a first spin MOSFET whose magnetization state is set in accordance with stored data; and a second spin MOSFET whose magnetization state is set in accordance with the stored data, the second spin MOSFET being connected in parallel with the first spin MOSFET; a first wiring configured to apply a gate voltage so that any one of the first spin MOSFET and the second spin MOSFET becomes electrically conductive in accordance with search data; and a second wiring configured to apply a current to both of the first spin MOSFET and the second spin MOSFET.
摘要:
According to one embodiment, a memory device includes first and second fin type stacked structures each includes first to i-th memory strings (i is a natural number except 1) that are stacked in a first direction, the first and second fin type stacked structures which extend in a second direction and which are adjacent in a third direction, a first portion connected to one end in the second direction of the first fin type stacked structure, a width in the third direction of the first portion being greater than a width in the third direction of the first fin type stacked structure, and a second portion connected to one end in the second direction of the second fin type stacked structure, a width in the third direction of the second portion being greater than a width in the third direction of the second fin type stacked structure.
摘要:
According to one embodiment, a semiconductor memory device includes a memory and a controller. The memory stores data pieces and search information including entries, where each entry is associated with a search key for specifying one data piece and a real address at which the data piece is stored. Upon reception of a first command, the controller, when the first command specifies a search key, outputs one data piece corresponding to one entry which includes the search key, and when the first command specifies one real address, outputs one data piece corresponding to one entry including the real address.
摘要:
According to one embodiment, a memory system including a key-value store containing key-value data as a pair of a key and a value corresponding to the key, includes a first memory, a control circuit and a second memory. The first memory is configured to contain a data area for storing data, and a table area containing the key-value data. The control circuit is configured to perform write and read to the first memory by addressing, and execute a request based on the key-value store. The second memory is configured to store the key-value data in accordance with an instruction from the control circuit. The control circuit performs a set operation by using the key-value data stored in the first memory, and the key-value data stored in the second memory.