17959664. ROW HAMMER REFRESH OPERATION simplified abstract (Micron Technology, Inc.)
Contents
ROW HAMMER REFRESH OPERATION
Organization Name
Inventor(s)
John Christopher M. Sancon of Boise ID (US)
ROW HAMMER REFRESH OPERATION - A simplified explanation of the abstract
This abstract first appeared for US patent application 17959664 titled 'ROW HAMMER REFRESH OPERATION
Simplified Explanation
The abstract describes a patent application related to a row hammer refresh operation in memory devices. The invention involves an apparatus with an array of memory cells, including multiple dies, one of which is a row hammer die. The apparatus also includes a memory controller that performs various operations on the memory cells. The memory controller detects the number of accesses associated with the row hammer die and, based on the number of operations performed, performs a refresh operation on a group of memory cells in another die when a threshold quantity of accesses is reached.
- An apparatus for managing memory cells in a memory device is described in the patent application.
- The apparatus includes an array of memory cells, with multiple dies, one of which is a row hammer die.
- A memory controller is coupled to the array of memory cells and performs operations on them.
- The memory controller detects the number of accesses associated with the row hammer die.
- When a threshold quantity of accesses is reached, the memory controller performs a refresh operation on a group of memory cells in another die.
Potential Applications
- This technology can be applied in various memory devices, such as computer RAM or solid-state drives.
- It can help prevent data corruption and improve the reliability of memory systems.
Problems Solved
- Row hammer is a phenomenon where repeated accesses to a specific row of memory cells can cause bit flips in neighboring rows.
- This technology solves the problem of row hammer by detecting the number of accesses and performing refresh operations to prevent data corruption.
Benefits
- By performing refresh operations on specific groups of memory cells, this technology mitigates the effects of row hammer and improves the overall reliability of memory systems.
- It helps to extend the lifespan of memory devices by preventing data corruption and reducing the occurrence of bit flips.
Original Abstract Submitted
Systems, apparatuses, and methods related to a row hammer refresh operation are described herein. An example apparatus can include an array of memory cells of a memory device. The array of memory cells can include a plurality of dies and at least one of the plurality of dies is a row hammer die. The example apparatus can include a memory controller coupled to the array of memory cells. The memory controller can perform a number of operations on the array of memory cells. The memory controller can detect a quantity of accesses associated with the row hammer die and based on the number of operations performed. The memory controller can, in response to detection of a threshold quantity of accesses of a group of memory cells in the row hammer die, perform a refresh operation on a group of memory cells in an additional die of the plurality of dies.
