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:
In general, according to one embodiment, a DA converter configured to convert a digital signal comprising n (n>1) bits to an analog current to output the analog current from an output terminal, includes n voltage-current converters. Each of them corresponds to each bit of the digital signal and is configured to generate a current depending on the corresponding bit. A k-th (k is an integer of 0 to n−1) voltage-current converter includes a first transistor whose threshold voltage is adjustable. The first transistor includes a semiconductor substrate, a first diffusion region, a second diffusion region, an insulating film, a charge accumulating film, and a gate.
摘要:
According to an embodiment, an analog-to-digital converter includes a voltage generating unit, and a plurality of comparators. The voltage generating unit is configured to divide a reference voltage by a plurality of variable resistors to generate a plurality of comparative voltages. Each of the plurality of comparator is configured to compare any one of the plurality of comparative voltages with an analog input voltage and output a digital signal based on a result of a comparison between the comparative voltage and the analog input voltage. Each of the plurality of variable resistors includes a plurality of variable resistive elements that are connected in series, and each of the plurality of variable resistive elements has a resistance value that is variably set according to an external signal.
摘要:
According to an embodiment, an analog-to-digital converter includes a voltage generating unit to generate comparative voltages; and comparators. Each comparator compares any one of the comparative voltages with an analog input voltage and output a digital signal. Each comparator includes a differential pair circuit to detect a potential difference between two inputs. The differential pair circuit includes first and second circuit portions. The first circuit portion includes a first transistor having a gate to which one input is supplied; and a resistor connected in series with the first transistor. The second circuit portion includes a second transistor having a gate to which the other input is supplied and forms a differential pair with the first transistor; and a variable resistor connected in series with the second transistor. The variable resistor includes variable resistive elements each having a resistance value variably set according to a control signal.
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 semiconductor associative memory device comprises a retrieval block having retrieval word strings arranged in a column direction, each of the retrieval word strings includes memory cells arranged in a row direction between a word input terminal and a word output terminal, each of the memory cells having a first input terminal, a second input terminal, and an output terminal, wherein in each retrieval word string, the second input terminal of one of the memory cells is used as the word input terminal, and each of other memory cells is connected to the output terminal of adjacent memory cell by the second input terminal, wherein the first input terminals of the memory cells in the same column are connected.
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 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 semiconductor device includes a semiconductor substrate; a first gate insulation film formed on the semiconductor substrate; a second gate insulation film formed on the semiconductor substrate; a first gate electrode formed on the first gate insulation film and fully silicided; and a second gate electrode formed on the second gate insulation film and fully silicided, a gate length or a gate width of the second gate electrode being larger than that of the first gate electrode, and a thickness of the second gate electrode being smaller than that of the first gate electrode.
摘要:
According to one embodiment, a fabrication method of a semiconductor device comprising forming a dummy gate with a gate length direction set to a [111] direction perpendicular to a [110] direction on a surface of a supporting substrate having Si1-xGex (0≦x
摘要翻译:根据一个实施例,一种半导体器件的制造方法包括:在具有Si1-xGex(0&amp; nlE;)的支撑衬底的表面上形成栅极长度方向设置为垂直于[110]方向的[111] x <0.5),具有垂直于在表面上设置为[110]方向的表面的晶体取向,形成源极/漏极区域并在虚拟栅极的侧部分上形成绝缘膜。 接下来,使用绝缘膜作为掩模蚀刻伪栅极,并且进一步蚀刻在源极/漏极区域之间的衬底的表面部分。 接下来,通过使用源极/漏极区域的边缘部分作为晶种,在源极/漏极区域之间生长由III-V族半导体或Ge形成的沟道区域。 然后,通过栅极绝缘膜在沟道区的上方形成栅电极。