G11C11/2253

Memory cell driver, memory cell arrangement, and methods thereof
11594271 · 2023-02-28 · ·

In various embodiments, a memory cell arrangement is provided including a memory cell driver and one or more memory cells, wherein one or more control nodes of each of the one or more memory cells are electrically conductively connected to one or more output nodes of the memory cell driver. The memory cell driver may include: a first supply node to receive a first supply voltage and a second supply node to receive a second supply voltage, a plurality of input nodes to receive a plurality of input voltages, one or more output nodes, and a logic circuit connected to the first supply node, the second supply node, the plurality of input nodes, and the one or more output nodes, wherein the logic circuit includes one or more logic gates and is configured to connect via the one or more logic gates either the first supply node or the second supply node to the one or more output nodes in response to the plurality of input voltages.

Three-Dimensional Memory Device and Method

In an embodiment, a device includes: a first dielectric layer over a substrate; a word line over the first dielectric layer, the word line including a first main layer and a first glue layer, the first glue layer extending along a bottom surface, a top surface, and a first sidewall of the first main layer; a second dielectric layer over the word line; a first bit line extending through the second dielectric layer and the first dielectric layer; and a data storage strip disposed between the first bit line and the word line, the data storage strip extending along a second sidewall of the word line.

Memory cell with a ferroelectric capacitor integrated with a transtor gate

Described herein are ferroelectric (FE) memory cells that include transistors having gates with FE capacitors integrated therein. An example memory cell includes a transistor having a semiconductor channel material, a gate dielectric over the semiconductor material, a first conductor material over the gate dielectric, a FE material over the first conductor material, and a second conductor material over the FE material. The first and second conductor materials form, respectively, first and second capacitor electrodes of a capacitor, where the first and second capacitor electrodes are separated by the FE material (hence, a “FE capacitor”). Separating a FE material from a semiconductor channel material of a transistor with a layer of a gate dielectric and a layer of a first conductor material eliminates the FE-semiconductor interface that may cause endurance issues in some other FE memory cells.

Non-volatile memory devices and systems with volatile memory features and methods for operating the same

Memory devices, systems including memory devices, and methods of operating memory devices and systems are provided, in which at least a subset of a non-volatile memory array is configured to behave as a volatile memory by erasing or degrading data in the event of a changed power condition such as a power-loss event, a power-off event, or a power-on event. In one embodiment of the present technology, a memory device is provided, comprising a non-volatile memory array, and circuitry configured to store one or more addresses of the non-volatile memory array, to detect a changed power condition of the memory device, and to erase or degrade data at the one or more addresses in response to detecting the changed power condition.

WORDLINE CAPACITANCE BALANCING
20230031126 · 2023-02-02 ·

Methods, systems, and devices for word line capacitance balancing are described. A memory device may include a set of memory tiles, where one or more memory tiles may be located at a boundary of the set. Each boundary memory tile may have a word line coupled with a driver and a subarray of memory cells, and may also include a load balancing component (e.g., a capacitive component) coupled with the driver. In some examples, the load balancing component may be coupled with an output line of the driver (such as a word line) or an input of the driver (such as a line providing a source signal). The load balancing component may adapt a load output from the driver to the subarray of memory cells such that the load of the memory tile at the boundary may be similar to the load of other memory tiles not at the boundary.

NON-VOLATILE MEMORY DEVICES AND SYSTEMS WITH VOLATILE MEMORY FEATURES AND METHODS FOR OPERATING THE SAME

Memory devices, systems including memory devices, and methods of operating memory devices and systems are provided, in which at least a subset of a non-volatile memory array is configured to behave as a volatile memory by erasing or degrading data in the event of a changed power condition such as a power-loss event, a power-off event, or a power-on event. In one embodiment of the present technology, a memory device is provided, comprising a non-volatile memory array, and circuitry configured to store one or more addresses of the non-volatile memory array, to detect a changed power condition of the memory device, and to erase or degrade data at the one or more addresses in response to detecting the changed power condition.

Multiple concurrent modulation schemes in a memory system

Methods, systems, and devices for multiple concurrent modulation schemes in a memory system are described. Techniques are provided herein to communicate data using a modulation scheme having at least three levels and using a modulation scheme having at least two levels within a common system or memory device. Such communication with multiple modulation schemes may be concurrent. The modulated data may be communicated to a memory die through distinct signal paths that may correspond to a particular modulation scheme. An example of a modulation scheme having at least three levels may be pulse amplitude modulation (PAM) and an example of a modulation scheme having at least two levels may be non-return-to-zero (NRZ).

MEMORY CIRCUIT AND WRITE METHOD

A method of writing data to a memory array of three-terminal memory cells includes simultaneously programming a first subset of memory cells in a first column of the memory array to a first logic level by activating a first select line of the first column and a first bit line of the first column, and simultaneously programming a second subset of memory cells in the first column to the first logic level by activating the first select line and a second bit line of the first column.

Wear leveling for random access and ferroelectric memory

Methods, systems, and devices related to wear leveling for random access and ferroelectric memory are described. Non-volatile memory devices, e.g., ferroelectric random access memory (FeRAM) may utilize wear leveling to extend life time of the memory devices by avoiding reliability issues due to a limited cycling capability. A wear-leveling pool, or number of cells used for a wear-leveling application, may be expanded by softening or avoiding restrictions on a source page and a destination page within a same section of memory array. In addition, error correction code may be applied when moving data from the source page to the destination page to avoid duplicating errors present in the source page.

MANAGING DISTRIBUTION OF PAGE ADDRESSES AND PARTITION NUMBERS IN A MEMORY SUB-SYSTEM
20230066419 · 2023-03-02 ·

A memory access command to be performed on a die of a memory device is received, wherein the memory access command comprises a base partition number and a base page address. The memory access command is converted into a plurality of commands based on a number of partitions associated with the die. A respective partition number derived from the base partition number is determined for each command of the plurality of commands. A respective page address associated with each command of the plurality of commands is determined using the base page address. The plurality of commands is executed using, for each command of the plurality of commands, the respective partition number and the respective page address.