Controller having flash memory testing functions, and storage system and testing method thereof
US8086919B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 2009 |
| Grant date | Dec 27, 2011 |
| Priority date | — |
| Expiry date | Jan 26, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C2029/0401
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A flash memory controller having a flash memory testing functions is provided, in which the flash memory controller includes a microprocessor unit, a flash memory interface unit, a host interface unit and a memory cell testing unit. The flash memory interface unit is configured for connecting a plurality of flash memory chips, where each flash memory chip has a plurality of flash memory dies and each flash memory die has a plurality of physical blocks. The host interface unit is configured for connecting a host system. The memory cell testing unit is configured for determining whether the physical blocks can be normally written, read and erased. Accordingly, the flash memory controller can perform a flash memory testing under a command of the host system and all the physical blocks of the flash memory chip can be tested during the flash memory testing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.