Data storage device and method for updating logical-to-physical mapping table
US10776280B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 3, 2019 |
| Grant date | Sep 15, 2020 |
| Priority date | — |
| Expiry date | Jun 7, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/7201
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A data storage device is provided. The data storage includes: a flash memory, a dynamic random access memory (DRAM), and a memory controller. The flash memory stores a logical-to-physical mapping (L2P) table that is divided into a plurality of group-mapping (G2P) tables, and includes a first logical unit number (LUN) and a second LUN that are respectively controlled by a first chip enable (CE) signal and a second CE signal. The memory controller receives a write command from a host, and forms super page data using logical pages of data in the write command. The memory controller reads one of the group-mapping tables from the first LUN or the second LUN to the DRAM after sequentially enabling the first CE signal and second CE signal to write a first portion and a second portion of the super page data to the first LUN and the second LUN.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.