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Nand type flash memory controller and read-write control system and method

A flash memory controller, read and write control technology, applied in static memory, digital memory information, instruments, etc., can solve problems such as failure to work normally, inability to meet the needs of command combination, etc., to achieve convenient operation, speed up, and save hardware cost effect

Active Publication Date: 2014-11-05
ACTIONS ZHUHAI TECH CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Moreover, this technique cannot adapt to the needs of new command combinations
When a single new command or a new combination of single commands appears, the FSM will not work properly because there is no corresponding decoding circuit

Method used

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  • Nand type flash memory controller and read-write control system and method
  • Nand type flash memory controller and read-write control system and method
  • Nand type flash memory controller and read-write control system and method

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Embodiment Construction

[0081] In order to make the object, technical solution and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0082] In the embodiment of the present invention, the configuration register includes a control flag bit, and the control flag bit is pre-configured to store read and write operation information for indicating the read and write operation of the NAND flash memory, and the FSM can control the NAND flash memory according to the read and write operation information The read and write operations can avoid the inconvenience of configuring the decoding circuit.

[0083] figure 1 It is a schematic diagram of an exemplary structure of a NAND flash memory controller according to the present invention.

[0084] Such as figure 1 As shown, the NAND flash memory controller includes a configuration register 101 and a finite state machine (FSM) 1...

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Abstract

The invention relates to a nand (NAND) flash controller and reading and writing control system and a method. The NAND flash controller consists of a finite state machine (FSM) and a configuration register; wherein, the configuration register consists of a control flag bit and configures the control flag bit in advance to store reading and writing operation information used for indicating NAND flash reading and writing operation; the FSM is used for visiting the configuration register to gain the reading and writing operation information and then according to the reading and writing operation information, controlling the NAND flash reading and writing operation. If the system and method are applied, no configuration of a decoding circuit is needed and an analysis can be inferred that a host computer needs the operation of the FSM, the NAND flash controller can be flexibly configured to provide convenience for various NAND flash reading and writing operation.

Description

technical field [0001] The present invention relates to the technical field of flash memory (Flash Memory), and more particularly, relates to a NAND flash memory controller, a read-write control system and a method. Background technique [0002] Flash memory (Flash Memory) is a long-life non-volatile memory. Flash memory is a variant of electronically erasable read-only memory (EEPROM). EEPROM deletes and rewrites at the byte level, rather than erasing and rewriting the entire chip, so flash memory can update faster than EEPROM. Because the data can still be saved when the power is cut off, flash memory is usually used to save setting information, such as saving data in the basic input and output program (BIOS) of the computer, personal digital assistant (PDA), digital camera, etc. [0003] NOR-type flash memory and NAND-type flash memory are the two main non-volatile flash memory technologies on the market today. NOR-type flash memory is more like memory, with independen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11C7/10G06F3/06
Inventor 庞成章
Owner ACTIONS ZHUHAI TECH CO