摘要:
An insulated gate field effect transistor (10) having an reduced gate to drain capacitance and a method of manufacturing the field effect transistor (10). A dopant well (13) is formed in a semiconductor material (11). A gate oxide layer (26) is formed on the dopant well (13) wherein the gate oxide layer (26) and a gate structure (41) having a gate contact portion (43) and a gate extension portion (44). The gate contact portion (43) permits electrical contact to the gate structure (41), whereas the gate extension portion (44) serves as the active gate portion. A portion of the gate oxide (26) adjacent the gate contact portion (43) is thickened to lower a gate to drain capacitance of the field effect transistor (10) and thereby increase a bandwidth of the insulated gate field effect transistor (10).
摘要:
A memory system (200) has an array of addressable storage elements (210) arranged in a plurality of rows and a plurality of columns, and decoding circuitry (220, 230) coupled to the array of addressable storage elements (210). The decoding circuitry (220, 230), in response to decoding a first address, accesses a first storage element of a first row of the plurality of rows, and, in response to decoding a second address consecutive to the first address, accesses a second storage element of a second row of the plurality of rows. The second row of the plurality of rows is different from the first row of the plurality of rows. By implementing a memory system wherein consecutive addresses correspond to storage elements of different rows, read disturb stresses along a single row can be minimized.
摘要:
A semiconductor device includes a parasitic silicon-controlled rectifier (SCR) and a first transistor. The parasitic SCR includes a parasitic pnp bipolar junction transistor (BJT) and a parasitic npn BJT. The first transistor is coupled between a first power supply node and an emitter of the parasitic pnp BJT. The first transistor includes a first terminal coupled to the first power supply node, a second terminal coupled to the emitter of the parasitic pnp BJT, and a control terminal. The first transistor is not positioned between a base of the pnp BJT and the first power supply node. The first transistor limits current conducted by the parasitic pnp BJT following a single-event latch-up (SEL) event.
摘要:
A technique for addressing single-event latch-up (SEL) in a semiconductor device includes determining a location of a parasitic silicon-controlled rectifier (SCR) in an integrated circuit design of the semiconductor device. In this case, the parasitic SCR includes a parasitic pnp bipolar junction transistor (BJT) and a parasitic npn BJT. The technique also includes incorporating a first transistor between a first power supply node and an emitter of the parasitic pnp BJT in the integrated circuit design. The first transistor includes a first terminal coupled to the first power supply node, a second terminal coupled to the emitter of the parasitic pnp BJT, and a control terminal. The first transistor is not positioned between a base of the pnp BJT and the first power supply node. The first transistor limits current conducted by the parasitic pnp bipolar junction transistor following an SEL.
摘要:
Embodiments of a semiconductor structure include a first current electrode region, a second current electrode region, and a channel region. The channel region is located between the first current electrode region and the second current electrode region, and the channel region is located in a fin structure of the semiconductor structure. A carrier transport in the channel region is generally in a horizontal direction between the first current electrode region and the second current electrode region. A contact extends into the first current electrode region and is electrically coupled to the first current electrode region.
摘要:
An electronic device can include an insulating layer and a fin-type transistor structure. The fin-type structure can have a semiconductor fin and a gate electrode spaced apart from each other. A dielectric layer and a spacer structure can lie between the semiconductor fin and the gate electrode. The semiconductor fin can include channel region including a portion associated with a relatively higher VT lying between a portion associated with a relatively lower VT and the insulating layer. In one embodiment, the supply voltage is lower than the relatively higher VT of the channel region. A process for forming the electronic device is also disclosed.
摘要:
A semiconductor fabrication method includes forming a semiconductor structure including source/drain regions disposed on either side of a channel body wherein the source/drain regions include a first semiconductor material and wherein the channel body includes a migration barrier of a second semiconductor material. A gate dielectric overlies the semiconductor structure and a gate module overlies the gate dielectric. An offset in the majority carrier potential energy level between the first and second semiconductor materials creates a potential well for majority carriers in the channel body. The migration barrier may be a layer of the second semiconductor material over a first layer of the first semiconductor material and under a capping layer of the first semiconductor material. In a one dimensional migration barrier, the migration barrier extends laterally through the source/drain regions while, in a two dimensional barrier, the barrier terminates laterally at boundaries defined by the gate module.
摘要:
A memory system including a random access memory (RAM) array and a corresponding redundant RAM array which stores information redundant to the RAM array, where a designed cell circuit topology of cells within the redundant RAM array differs from a designed cell circuit topology of cells within the RAM array. The redundant RAM array is selectively accessed when accessing the RAM array to store data to the redundant RAM array for failed cells of the RAM array.
摘要:
An electronic device includes a memory cell that utilizes a bi-directional low impedance, low voltage drop full pass gate to connect a bit cell to a bit write line during a write phase, and during a read phase the full pass gate can remain off and a high input impedance read port can acquire and transmit the logic state stored by the memory cell to another subsystem. The full pass gate can be implemented by connecting a P type metal semiconductor field effect transistor (PMOS) in parallel with an NMOS device and driving the gates of the transistors with a differential signal. When a write operation requires a current to flow in a first direction, the PMOS device provides a negligible voltage drop, and when the write operation requires current to flow in a second or the opposite direction, the NMOS device can provide a negligible voltage. This bi-directional low voltage drop low loss switch can increase the write margin of the memory cell wherein the high impedance read port can provide increased isolation for the stored value during the read phase increasing the performance of the memory cell.
摘要:
A multiport memory cell (200, 300, 600) includes a first word line (WL1) coupled to a gate electrode of a first transistor (201, 301, 601). A second word line (WL2) is coupled to a gate electrode of a second transistor (202, 302, 602). Importantly, the memory cell (200, 300, 600) includes a conductive path (215, 315) between an electrically floating body (426) of the first transistor (201) and an electrically floating body (426) of the second transistor (202). The first word line (WL1) may overlie a first portion of a common body (426) and the second word line (WL2) may overlie a second portion of the common body (426). The common body (426) may be positioned vertically between a buried oxide layer (427) and a gate dielectric layer (430) and laterally between first and second source/drain regions (401, 407) formed in a semiconductor layer (425). The cell (200, 300, 600) may include a third transistor (603) including a third word line (613) where the shared transistor body (610) is shared with the third transistor (603) and wherein the conductive path is connected to the third transistor (603).