Abstract: Methods, systems, and devices for write buffer extensions for storage interface controllers are described. Apparatuses and methods are presented in which a buffer may be used to temporarily store data from an application if the memory device is in an INACTIVE power mode. This may allow the memory device to remain asleep. The buffer may be positioned on the host device so that the power mode of the memory device may not affect it. That way, data may be stored in the buffer without waking up the memory device. If the memory device is in an ACTIVE power mode, the data that has been temporarily stored in the buffer may be sent to the memory device for storage. During read operations, if the requested data is stored in the buffer, it may be used instead of data in the memory device.

Abstract: Methods, systems, and devices for a read operation using compressed memory are described. An apparatus may include a host system coupled with a non-volatile memory device and a volatile memory device. The host system may store, in the volatile memory device, a compressed copy of data stored in the non-volatile memory device, for example, based on a score assigned to the data. The host system may identify that the compressed copy of the data is stored in the volatile memory device and may transmit a read command to the volatile memory device that includes a logical address associated with a logical block address of the data stored in the non-volatile memory device. The host system may receive the compressed copy of the data from the volatile memory device in response to the read command and may decompress the data.

Abstract: Methods, systems, and devices for improved performance in a fragmented memory system are described. The memory system may detect conditions associated with a random access parameter stored at the memory system to assess a level of data fragmentation. The memory system may determine that a random access parameter, such as a data fragmentation parameter, a size of information associated with an access command, a depth of a command queue, a delay duration, or a quantity of commands satisfies a threshold. If one or more of the random access parameters satisfies the threshold, the memory system may transmit a request for the host system to increase an associated clock frequency. The host system may increase the number of commands sent to the memory system in a duration of time. That is, the host system may compensate for a slow-down due to data storage fragmentation by increasing the command processing rate.

Abstract: Methods, systems, and devices for power supply control for non-volatile memory are described. A package containing a memory subsystem may include a controller, a volatile memory, and a non-volatile memory. The package may include one or more pins for receiving a supply voltage that may be distributed to the controller, the volatile memory, and the non-volatile memory using one or more power supply rails. The memory subsystem may include one or more switching components along one or more power supply rails to selectively decouple the non-volatile memory from the one or more power supply rails, thereby enabling the non-volatile memory to be powered down separately from the controller and volatile memory. The controller may determine whether to couple or uncouple the non-volatile memory from a power supply rail based on various criteria associated with accessing the non-volatile memory.

Abstract: Methods, systems, and devices for dynamic logical page sizes for memory devices are described. A memory device may use an initial set of logical pages each having a same size and one or more logical-to-physical (L2P) tables to map logical addresses of the logical pages to the physical addresses of corresponding physical pages. As commands are received from a host device, the memory device may dynamically split a logical page to introduce smaller logic pages if the host device accesses data in chunk sizes smaller than the size of the logical page that is split. The memory device may maintain one or more additional L2P tables for each smaller logical page size that is introduced, along with one or more pointer tables to map between L2P tables and entries for larger logical page sizes and L2P tables and entries associated with smaller logical page sizes.

Abstract: Methods, systems, and devices for write buffer extensions for storage interface controllers are described. Apparatuses and methods are presented in which a buffer may be used to temporarily store data from an application if the memory device is in an INACTIVE power mode. This may allow the memory device to remain asleep. The buffer may be positioned on the host device so that the power mode of the memory device may not affect it. That way, data may be stored in the buffer without waking up the memory device. If the memory device is in an ACTIVE power mode, the data that has been temporarily stored in the buffer may be sent to the memory device for storage. During read operations, if the requested data is stored in the buffer, it may be used instead of data in the memory device.

Abstract: Methods, systems, and devices for session-based memory operation are described. A memory system may determine that a logical address targeted by a read command is associated with a session table. The memory system may write the session table to a cache based on the logical address being associated with the session table. After writing the session table to the cache, the memory system may use the session table to determine one or more logical-to-physical (L2P) tables and write the one or more L2P tables to the cache. The memory system may use the L2L tables to perform address translation for logical addresses.

Abstract: Methods, systems, and devices for rate adjustments for a memory interface are described. A host system may communicate with a memory system via an interface according to multiple data transfer rates. For example, the host system may configure the interface to operate according to a first rate. The host system may switch the interface from the first rate to a second rate in response to one or more commands from the host system satisfying one or more parameters such as a threshold quantity of data associated with a command, a threshold quantity of issued commands associated with at least the threshold quantity of data, a threshold quantity of issued and unexecuted commands, or any combination thereof. Based on the switching, the host system may communicate with the memory system via the interface in accordance with the second rate.

Abstract: Methods, systems, and devices for dynamic logical page sizes for memory devices are described. A memory device may use an initial set of logical pages each having a same size and one or more logical-to-physical (L2P) tables to map logical addresses of the logical pages to the physical addresses of corresponding physical pages. As commands are received from a host device, the memory device may dynamically split a logical page to introduce smaller logic pages if the host device accesses data in chunk sizes smaller than the size of the logical page that is split. The memory device may maintain one or more additional L2P tables for each smaller logical page size that is introduced, along with one or more pointer tables to map between L2P tables and entries for larger logical page sizes and L2P tables and entries associated with smaller logical page sizes.

Abstract: Methods, systems, and devices for a read operation using compressed memory are described. An apparatus may include a host system coupled with a non-volatile memory device and a volatile memory device. The host system may store, in the volatile memory device, a compressed copy of data stored in the non-volatile memory device, for example, based on a score assigned to the data. The host system may identify that the compressed copy of the data is stored in the volatile memory device and may transmit a read command to the volatile memory device that includes a logical address associated with a logical block address of the data stored in the non-volatile memory device. The host system may receive the compressed copy of the data from the volatile memory device in response to the read command and may decompress the data.

Abstract: Methods, systems, and devices for dynamic logical page sizes for memory devices are described. A memory device may use an initial set of logical pages each having a same size and one or more logical-to-physical (L2P) tables to map logical addresses of the logical pages to the physical addresses of corresponding physical pages. As commands are received from a host device, the memory device may dynamically split a logical page to introduce smaller logic pages if the host device accesses data in chunk sizes smaller than the size of the logical page that is split. The memory device may maintain one or more additional L2P tables for each smaller logical page size that is introduced, along with one or more pointer tables to map between L2P tables and entries for larger logical page sizes and L2P tables and entries associated with smaller logical page sizes.

Abstract: Methods, systems, and devices for session-based memory operation are described. A memory system may determine that a logical address targeted by a read command is associated with a session table. The memory system may write the session table to a cache based on the logical address being associated with the session table. After writing the session table to the cache, the memory system may use the session table to determine one or more logical-to-physical (L2P) tables and write the one or more L2P tables to the cache. The memory system may use the L2L tables to perform address translation for logical addresses.

Abstract: Methods, systems, and devices for power supply control for non-volatile memory are described. A package containing a memory subsystem may include a controller, a volatile memory, and a non-volatile memory. The package may include one or more pins for receiving a supply voltage that may be distributed to the controller, the volatile memory, and the non-volatile memory using one or more power supply rails. The memory subsystem may include one or more switching components along one or more power supply rails to selectively decouple the non-volatile memory from the one or more power supply rails, thereby enabling the non-volatile memory to be powered down separately from the controller and volatile memory. The controller may determine whether to couple or uncouple the non-volatile memory from a power supply rail based on various criteria associated with accessing the non-volatile memory.