System and method for accessing not-and flash memory

A flash memory and non-type technology, which is applied in the field of access and non-type flash memory systems, can solve the problems of only one chip in performance, reduce the access speed of the controller to NAND Flash, and it is difficult to meet the needs of high-performance and large-capacity equipment, so as to improve access The effect of speed and shortening the access delay
CN101064192AActive Publication Date: 2007-10-31HUAWEI TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
HUAWEI TECH CO LTD
Publication Date
2007-10-31

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Abstract

This invention discloses one visit and non-flash memory system and method, which comprises the following steps: through test on the memory operation and in the execution circle the controller sends operation orders to other memory chips to overlap the memory execution circles to realize the multiple memory operations and to reduce the visit time lag of controller and non-flash memory visit time lag.
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Description

technical field

[0001] The invention relates to flash memory technology, in particular to a system and method for accessing NAND Flash. Background technique

[0002] Access to NAND Flash usually includes three cycles: command cycle, execution cycle and status cycle. In the command cycle, NAND Flash receives the execution command from the controller; in the execution cycle, NAND flash executes the command received; in the status cycle, the controller reads the result of the command execution from NAND Flash.

[0003] The basic operations on NAND Flash include read operation, erase operation and programming operation. The operation process is respectively:

[0004] When performing a read operation, the controller sends a read command to the NAND Flash during the command cycle, and the NAND Flash reads the page to be read during the execution cycle, and the controller can read data from the NAND Flash during the status cycle; when performing an erase operation, the controller...

Claims

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