摘要:
A pMIS region is provided between a boundary extending in a first direction and passing through each of a plurality of standard cells and a first peripheral edge. An nMIS region is provided between the boundary and a second peripheral edge. A power supply wiring and a grounding wiring extend along the first and second peripheral edges, respectively. A plurality of pMIS wirings and a plurality of nMIS wirings are arranged on a plurality of first virtual lines and a plurality of second virtual lines, respectively, extending in the first direction and arranged with a single pitch in a second direction. The first virtual line that is the closest to the boundary and the second virtual line that is the closest to the boundary have therebetween a spacing larger than the single pitch.
摘要:
A pMIS region is provided between a boundary extending in a first direction and passing through each of a plurality of standard cells and a first peripheral edge. An nMIS region is provided between the boundary and a second peripheral edge. A power supply wiring and a grounding wiring extend along the first and second peripheral edges, respectively. A plurality of pMIS wirings and a plurality of nMIS wirings are arranged on a plurality of first virtual lines and a plurality of second virtual lines, respectively, extending in the first direction and arranged with a single pitch in a second direction. The first virtual line that is the closest to the boundary and the second virtual line that is the closest to the boundary have therebetween a spacing larger than the single pitch.
摘要:
A memory device that consumes no wasteful power in selecting memory cells and achieves high operating speed and size and cost reductions, is provided. In reading of memory cell information, only a single memory cell in a single local block is activated through a read word line. Specifically, AND circuits are provided in correspondence with all memory cells. Each AND circuit receives as its inputs a block select signal for selecting one of the local blocks and an in-block memory cell select signal for selecting one of the memory cells in each local block in a common manner among the local blocks. The outputs from the AND circuits are applied to read word lines. Unselected memory cells are not activated and therefore no current flows from those memory cells to local read bit lines, thereby preventing wasteful power consumption.
摘要:
The synchronous semiconductor memory device related to the present invention is a synchronous semiconductor memory device in which for one data read signal, the respective data corresponding to a plurality of addresses are sequentially read out from a memory cell in synchronism with an external clock signal, and which comprises a control circuit which executes control according to an externally inputted control signal so as to output only the data corresponding to one address from the memory cell for one data read signal.
摘要:
CMOS inverters are included in a standard cell. Power supply lines are electrically connected to CMOS inverters, and include lower layer interconnects and upper layer interconnect. Lower layer interconnects extend along a boundary of standard cells adjacent to each other and on the boundary. Upper layer interconnects are positioned more inside in standard cell than lower layer interconnects, as viewed from a plane. CMOS inverters are electrically connected through upper layer interconnects to lower layer interconnects. Thus, a semiconductor device is obtained that can achieve both higher speeds and higher integration.
摘要:
A semiconductor memory device includes an array of memory cells arranged in rows and columns; a plurality of word lines connected to the rows of the memory cells; a plurality of bit lines connected to the columns of the memory cells; word line selection means; bit line selection means; and equalizing means for equalizing the bit line to a desired voltage level in response to an address signal, and for terminating the equalization in response to change in a signal on a word line according to change in the address signal.
摘要:
CMOS inverters are included in a standard cell. Power supply lines are electrically connected to CMOS inverters, and include lower layer interconnects and upper layer interconnect. Lower layer interconnects extend along a boundary of standard cells adjacent to each other and on the boundary. Upper layer interconnects are positioned more inside in standard cell than lower layer interconnects, as viewed from a plane. CMOS inverters are electrically connected through upper layer interconnects to lower layer interconnects. Thus, a semiconductor device is obtained that can achieve both higher speeds and higher integration.
摘要:
A cantilever stylus suited for use in an atomic force microscope is made in the following processes: forming a first film on a substrate; forming a second film of metallic material on an external surface of the first film; forming a photoresist film on an external surface of the second film by making use of a photolithography technique; performing etching with respect to the second film with only a portion thereof covered with the photoresist film left on the first film; and further performing etching with respect to the first film with the second film being used as a resist film so that the first film may be configured into a cantilever stylus.
摘要:
The synchronous semiconductor memory device related to the present invention is a synchronous semiconductor memory device in which for one data read signal, the respective data corresponding to a plurality of addresses are sequentially read out from a memory cell in synchronism with an external clock signal, and which comprises a control circuit which executes control according to an externally inputted control signal so as to output only the data corresponding to one address from the memory cell for one data read signal.
摘要:
An SRAM memory cell is constituted by complementarily connecting first inverter composed of NMOS transistor and a PMOS transistor, and a second inverter composed of another NMOS transistor and another PMOS transistor. Still another NMOS transistor is so provided that its gate is connected to a node between the NMOS and PMOS transistors in the first inverter. Still another NMOS transistor is so provided that its gate is connected to a node between the NMOS and PMOS transistors in the second inverter. As a result, capacity values for gate capacities are added to the storage nodes.