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Method and device, for setting information in non-volatile storage device

A non-volatile storage and setting method technology, applied in the field of control information

Inactive Publication Date: 2007-07-18
SPANSION LLC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Another type of non-volatile memory device requires about the same amount of time for a write operation as a read operation

Method used

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  • Method and device, for setting information in non-volatile storage device
  • Method and device, for setting information in non-volatile storage device
  • Method and device, for setting information in non-volatile storage device

Examples

Experimental program
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Embodiment Construction

[0056] Referring to FIG. 1 to FIG. 9 , the first and second embodiments of the non-volatile storage, the information setting method, and the system incorporating them will be described in detail below according to the present invention.

[0057] Please refer to Fig. 1, which shows the system of the principle of the present invention. The controller 5 transmits control information setting (control information setting) via the signal line 4 different from the data line 3 so as to electrically separate the non-volatile memory device 1 from the data line 3 . During the above processing, data communication between another device 2 and the controller 5 is enabled. If the non-volatile storage device 1 has multiple banks A and B, one of the banks A and B can be electrically separated from the data line 3 . The signal lines 4 can be, for example, address lines.

[0058] In this system, as shown in the operation waveform of FIG. 2, although the controller 5 is in data communication wi...

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Abstract

In a system sharing a data bus, when control information for setting an access condition is to be inputted and a predetermined bit string as a command setting the access condition on a predetermined terminal other than the data I / O terminal is inputted, the predetermined terminal is set as an input terminal of the control information and the control information which has been inputted is temporarily held in the non-volatile storage device. Simultaneously with this, in response to the input of all the control information, the control information temporarily held is stored in batch in the non-volatile storage area. When setting the access condition, the data I / O terminal is opened so as to provide the data bus to another bank and device, thereby improving the data transmission efficiency on the system.

Description

technical field [0001] The present invention relates to setting control information in a non-volatile storage device. Background technique [0002] As far as electrically rewritable non-volatile storage devices (such as EEPROM or flash memory) are concerned, in some cases each memory area (sector) or memory area composed of a predetermined number of memory cells (memory cells) is used. A sector group sets conditions for accessing storage units for each memory area or each memory sector group. Protection functions that control the state of write / erase disable or enable are typical targets of this type of setup. Access conditions are individually set for each memory area or memory area group. In order to set the access conditions of the memory area or the memory area group, the control information specifying the access condition is sequentially written to each of the memory area or the memory area group. [0003] There are two types of non-volatile memory devices. One type...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11C16/06
CPCG11C7/24G11C7/1078G11C7/109G11C16/06G11C16/22
Inventor 杉本智加藤健太
Owner SPANSION LLC