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Error checking and correcting verification module and data reading-writing method thereof

A verification module and error detection technology, applied in the field of error detection/error correction verification module, can solve problems such as low flexibility, and achieve the effect of improving flexibility, module structure, simple control and reducing influence

Active Publication Date: 2012-02-01
GIGADEVICE SEMICON (BEIJING) INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The technical problem to be solved by the present invention is to provide an ECC verification module and the technology for reading and writing data of the module, so as to solve the technical defect of low flexibility of the existing ECC verification module

Method used

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  • Error checking and correcting verification module and data reading-writing method thereof
  • Error checking and correcting verification module and data reading-writing method thereof
  • Error checking and correcting verification module and data reading-writing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0061] Embodiment 1. An error detection / correction (ECC) verification module 10, including a write buffer (Writebuffer) 110, an error detection / correction circuit (Decoder_ECC) 120, a latch (Latch) 130 and a verification circuit (Encoder_ECC) 140, such as figure 1 As shown, in the process of reading data (the dotted line in the figure indicates the data direction):

[0062] The error detection / correction circuit 120 is used to obtain the ECC code word in the storage array (Main Array) 100, and adopts the parity bit in the ECC code word to the data group in the ECC code word (this embodiment uses 4 bytes) to perform error detection / correction, and obtain the correct data group (hereinafter also referred to as the data group after error detection / correction) and send it to the external output port 200; the ECC codeword includes the ECC data group (data set) and check digit;

[0063] The external output port 200 is connected with the error detection / correction circuit 120, and ...

Embodiment 2

[0076] Embodiment two, a method for reading data by an error detection / error correction (ECC) verification module, the ECC verification module includes an error detection / correction circuit, such as image 3 As shown, the method mainly includes the following steps:

[0077] Step S310, receiving a read operation request from a user;

[0078] Step S320, the error detection / correction circuit obtains the corresponding ECC code word from the storage array (or other storage medium) according to the read operation request;

[0079] Step S330, the error detection / correction circuit uses the parity bit in the ECC codeword to perform error detection / correction processing on the data group in the ECC codeword, obtains the data group after error detection / correction and sends it to the outside output port;

[0080] In step S340, the external output port outputs the error-detected / corrected data group in units of bytes.

Embodiment 3

[0081] Embodiment three, a method for writing data in an error detection / error correction (ECC) verification module, the ECC verification module includes an error detection / correction circuit, a latch, a verification circuit and a write buffer, such as Figure 4 As shown, the method includes:

[0082] Step S410, receiving the user's write operation request and the input data to be written;

[0083] Step S420, the error detection / correction circuit obtains the corresponding ECC code word from the storage array (or other storage medium) according to the write operation request;

[0084] Step S430, perform error detection / correction processing on the ECC codeword (that is, use the parity bit in the ECC codeword to perform error detection / correction processing on the data group in the ECC codeword), and obtain an error detection / correction process. The wrong data group is sent to the latch;

[0085] Step S440, the latch stores the data group after error detection / correction, and...

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Abstract

The invention discloses an error checking and correcting (ECC) verification module and a data reading-writing method of the module, so as to solve the technical defect of low flexibility in present ECC verification modules. The verification module comprises: an ECC circuit used for ECC treatment of an ECC code word so as to obtain an error checked and corrected data set; a latch used for storing the error checked and corrected data set and updating the received input data to corresponding data positions in the checked and corrected data set, thus forming a data set to be written in; a verification circuit used for real-time verification of the data set to be written in and for generation of a verification bit corresponding to the data set to be written in; a write buffer used for writing the data set to be written in and a corresponding verification bit thereof into a storage medium. The embodiment of the invention realizes reading data from a main array or writing data into the main array in ECC code words, so that the control is easier and the data writing operation is speeded up.

Description

technical field [0001] The invention relates to a non-volatile memory, in particular to an Error Checking and Correcting (Error Checking and Correcting, ECC) verification module and a method for reading and writing data by the module. Background technique [0002] With the rapid development of integrated circuits, the integration level of semiconductor memory is getting higher and higher, and the capacity is also getting larger. The ensuing problem is that the reliability and yield of semiconductor memory are facing serious challenges. For example, the signal-to-noise ratio decreases with the increase of integration, and the decrease of the charge of the storage node makes the storage unit more susceptible to the influence of cosmic rays. , The process deviation and material defects under the deep submicron technology lead to the reduction of the yield of the memory, etc. [0003] Error-correcting codes are a type of codes that can not only detect errors but also locate and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11C16/10G11C29/42G11C16/26
Inventor 舒清明胡洪苏如伟
Owner GIGADEVICE SEMICON (BEIJING) INC
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