摘要:
A memory cell includes a first, second, and third columns of devices. The first column of devices includes a first pull-down transistor, a second pull-down transistor, a first switch, and a second switch. The second column of devices includes a third pull-down transistor, a fourth pull-down transistor, a third switch, and a fourth switch. The third column of devices includes a first pull-up transistor, and a second pull-up transistor. The first pull-up transistor, the first pull-down transistor, and the third pull-down transistor are connected as a first inverter, and the second pull-up transistor, the second pull-down transistor, and the fourth pull-down transistor are connected as a second inverter. The first inverter and the second inverter are cross-coupled. The first switch, the second switch, the third switch, and the fourth switch are coupled with output terminals of the first and second inverters.
摘要:
Static random access memory (SRAM) cells and SRAM cell arrays are disclosed. In one embodiment, an SRAM cell includes a pull-up transistor. The pull-up transistor includes a Fin field effect transistor (FinFET) that has a fin of semiconductive material. An active region is disposed within the fin. A contact is disposed over the active region of the pull-up transistor. The contact is a slot contact that is disposed in a first direction. The active region of the pull-up transistor is disposed in a second direction. The second direction is non-perpendicular to the first direction.
摘要:
A contact structure includes a first contact formed in a first dielectric layer connecting to the source/drain region of a MOS transistor, and a second contact formed in a second dielectric layer connecting to a gate region of a MOS transistor or to a first contact. A butted contact structure abutting a source/drain region and a gate electrode includes a first contact formed in a first dielectric layer connecting to the source/drain region of a MOS transistor, and a second contact formed in a second dielectric layer with one end resting on the gate electrode and the other end in contact with the first contact.
摘要:
An SRAM cell structure. In one embodiment, a bit cell first level contacts formed at a first and a second CVdd node, a first and a second CVss node, at a bit line node, at a bit line bar node, at a data node and at a data bar node; and second level contacts formed on each of the first level contacts at the first and second CVdd nodes, the first and second CVss nodes, the bit line node and the bit line bar node; wherein the first level contacts formed at the data node and the data bar node do not have a second level contact formed thereon. In another embodiment, a word line is formed and bit lines and a CVdd and a CVss line are formed overlying the SRAM cell and coupled to the corresponding ones of the nodes. Methods are disclosed for forming the cell structure.
摘要:
A memory cell includes a first, second, and third columns of devices. The first column of devices includes a first pull-down transistor, a second pull-down transistor, a first switch, and a second switch. The second column of devices includes a third pull-down transistor, a fourth pull-down transistor, a third switch, and a fourth switch. The third column of devices includes a first pull-up transistor, and a second pull-up transistor. The first pull-up transistor, the first pull-down transistor, and the third pull-down transistor are connected as a first inverter, and the second pull-up transistor, the second pull-down transistor, and the fourth pull-down transistor are connected as a second inverter. The first inverter and the second inverter are cross-coupled. The first switch, the second switch, the third switch, and the fourth switch are coupled with output terminals of the first and second inverters.
摘要:
Static random access memory (SRAM) cells and SRAM cell arrays are disclosed. In one embodiment, an SRAM cell includes a pull-up transistor. The pull-up transistor includes a Fin field effect transistor (FinFET) that has a fin of semiconductive material. An active region is disposed within the fin. A contact is disposed over the active region of the pull-up transistor. The contact is a slot contact that is disposed in a first direction. The active region of the pull-up transistor is disposed in a second direction. The second direction is non-perpendicular to the first direction.
摘要:
The present disclosure provides a read only memory (ROM) cell array. The ROM cell array includes a plurality of fin active regions oriented in a first direction and formed on a semiconductor substrate; a plurality of gates formed on the plurality of fin active regions and oriented in a second direction perpendicular to the first direction; and a plurality of ROM cells formed by the plurality of fin active regions and the plurality of gates, the plurality of ROM cells being coded such that each cell of a first subset of ROM cells has a source electrically connected to a power line, and each cell of a second subset of ROM cells has a source electrically isolated.
摘要:
The present disclosure provides a dual port static random access memory (SRAM) cell. The dual-port SRAM cell includes four sets of cascaded n-type metal-oxide-semiconductor field-effect transistors (NMOSFETs), each set of cascaded NMOSFETs having a pull-down device and a pass-gate device; and a first and second pull-up devices (PU1 and PU2) configured with the four pull-down devices to form two cross-coupled inverters, wherein two of the pass-gate devices are configured to form a first port and another two of the pass-gate devices are configured to form a second port.
摘要:
A shallow trench isolation (STI) structure and methods of forming a STI structure are disclosed. An embodiment is a method for forming a semiconductor structure. The method includes forming a recess in a semiconductor substrate; forming a first material on sidewalls of the recess; forming a widened recessed portion through a bottom surface of the recess; removing the first material from the sidewalls of the recess; and forming a dielectric material in the recess and the widened recessed portion. The bottom surface of the recess is exposed through the first material, and the bottom surface of the recess has a first width. The widened recessed portion has a second width. The second width is greater than the first width.
摘要:
An embedded SRAM chip in a 32 nm or smaller technology generation includes a first SRAM array of first SRAM unit cells. Each first SRAM unit cell includes a data latch for data storage and at least two pass gates for data reading and writing access. The cell area is defined by a first X-pitch and a first Y-pitch, the X-pitch being longer than the Y-pitch. A plurality of logic transistors are formed outside of the first SRAM array, the plurality of logic transistors including at least first and second logic transistor having first and second gate pitches defined between their source and drain contacts. The second gate pitch is the minimum logic gate pitch for the plurality of logic transistors. The first Y-pitch is equal to twice the first gate pitch and the ratio of the first Y-pitch to twice the second logic gate pitch is greater than one.