Abstract:
In a memory cell, the substrate contact region of an NMOS transistor and the well contact region of a PMOS transistor are arranged perpendicularly to a floating gate. In a cell array, the memory cell and another memory cell arranged axisymmetrically with respect to the memory cell are alternately arranged in the column direction to constitute a sub array, and the sub arrays arranged in the column direction are arranged in parallel or axisymmetically in the row direction. With this arrangement, the substrate contact region, the well contact region, and the diffusion region of the PMOS transistor can be shared between the adjacent memory cells, thereby reducing the area of the cell array.
Abstract:
A nonvolatile semiconductor memory device having a memory cell portion and peripheral circuit portion is disclosed. The nonvolatile semiconductor memory device has peripheral transistors formed in the peripheral circuit portion of a silicon substrate and cell transistors formed in the memory cell portion of the silicon substrate. The gate length of the cell transistor is shorter than the gate length of the peripheral transistor. Further, the nonvolatile semiconductor memory device has a silicon nitride film selectively formed on the memory cell portion. The silicon nitride film covers the cell transistors.
Abstract:
The invention concerns integrated circuits in which a MACRO is embedded in a standard cell array. One level of metal is devoted exclusively to non-local interconnect, and a layer of polysilicon is devoted to local interconnect, thereby saving significant space.
Abstract:
The invention concerns integrated circuits in which a MACRO is embedded in a standard cell array. One level of metal is devoted exclusively to non-local interconnect, and a layer of polysilicon is devoted to local interconnect, thereby saving significant space.
Abstract:
A plurality of memory macros are laid out in a semiconductor chip. Macro ID generation circuits generate macro IDs for identifying the memory macros, and have different layouts. These macro ID generation circuits are arranged outside the memory macros in the semiconductor chip, so that test control blocks in the memory macros can use the same layouts between all the memory macros to reduce the design load.
Abstract:
A placing and wiring method for a master slice type semiconductor integrated circuit is provided. The method is conducted by an automatic placing and routing apparatus with respect to a master slice 100 having a plurality of basic cells 110 formed in a matrix, in which first and second power source wirings 170 and 171 that traverse the plurality of basic cells 110 are connected to a plurality of signal wirings that are formed along a vertical direction to provide connections within each of the plurality of basic cells 110 and/or between the plurality of basic cells 110. The method includes: a first step of registering in the automatic pacing and routing apparatus definitions of effective pin positions A1-A14, B2-B13 and C1-C14; a second step of registering a net list in the automatic placing and routing apparatus; and a third step of determining the placement of pin positions and wiring routes, based on data for the definitions of the effective pin positions and the net list. The registered effective pin positions are provided on lattice grids 120, located inside and outside a region between the first and second power source wirings 170 and 171. In the circuit wired according to the definitions, contacts with respect to the drains are provided inside and outside the region between the first and second power source wirings 170 and 171, and the signal wirings do not cross the power source wirings.
Abstract:
Within a method for fabricating a microelectronic fabrication there is first provided a substrate. There is then formed over the substrate a spirally patterned conductor layer which terminates in a microelectronic structure within the center of the spirally patterned conductor layer. The spirally patterned conductor layer forms a planar spiral inductor, and the microelectronic structure formed within the center of the spirally patterned conductor layer further comprises a series of electrically interconnected sub-patterns. The method contemplates a microelectronic fabrication fabricated in accord with the method. The microelectronic fabrication is fabricated with optimal performance while occupying minimal microelectronic substrate area.
Abstract:
In a structure and a designing method of a memory integrated with a logic, a memory macro comprises L memory array blocks 1-1, 1-2, . . . 1-L each including memory cell arrays each with a storage capacity of K bits and sense amplifiers. Memory array power source driver blocks 4-1, 4-2, . . . 4-L each including a circuit for generating a driver power source which drives a sense amplifier are arranged in a corresponding manner to memory array blocks 1-1, 1-2, . . . 1-L. The memory array blocks 1-1, 1-2, . . . 1-L are arranged along a column direction in an adjacent manner to one another and DQ line pairs extending along a column direction are arranged on the memory array blocks 1-1, 1-2, . . . 1-L. Source line blocks 6a-L, 6b-L, 7a, 7b, 8a, 8b are arranged at an end of the memory array blocks in a row direction. According to such a design, short design turnaround for design and shrinkage of occupying area of a memory macro can be realized.
Abstract:
A microelectronic integrated circuit includes a semiconductor substrate, and a plurality of microelectronic devices formed on the substrate. Each device has a periphery defined by a hexagon, and includes an active area formed within the periphery. A first terminal and a second terminal are formed in the active area adjacent to edges of the hexagon that are separated by another edge. First to third gates are formed between the first and second terminals, and have gate terminals formed outside the active area adjacent to other edges of the hexagon. The power supply connections to the first and second terminals, the conductivity type (NMOS or PMOS), and the addition of a pull-up or a pull-down resistor is selected for each device to provide a desired AND, NAND, OR or NOR function. The devices are interconnected using three direction routing based on hexagonal geometry.
Abstract:
A gate array architecture is disclosed that utilizes significantly less silicon area than the prior art. The core cell includes a four transistor arrangement in which a substrate tap is located adjacent to the transistor pair. This provides for a more "symmetric" cell array than those in the prior art. Through the placement of the taps outside of the transistors the power line connections can be routed in a simple and efficient manner. The architecture includes an extension portion in the contact region of the cell to further reduce wiring complexity. In addition the gate array architecture mirrors pairs of transistor columns to allow for the sharing of substrate taps between pairs of columns. This mirroring feature further reduces routing complexity. The architecture further includes a plurality of probe lines that are located within the architecture to facilitate testability of the outputs of the architecture.