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Automatic adjustment method of access cycle of semiconductor device and its flash memory

An access cycle, automatic adjustment technology, applied in information storage, static memory, read-only memory, etc., can solve the problems of time and energy of users, communication of flash memory controller, time-consuming and so on

Active Publication Date: 2021-09-17
NUVOTON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above setting method requires the user to spend time to look up the table, and the user cannot directly communicate with the flash memory controller, so the central processing unit needs to intervene to update the number of access cycles
Therefore, the traditional method of setting the number of access cycles of the flash memory is a work that consumes the user's time and energy.

Method used

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  • Automatic adjustment method of access cycle of semiconductor device and its flash memory
  • Automatic adjustment method of access cycle of semiconductor device and its flash memory
  • Automatic adjustment method of access cycle of semiconductor device and its flash memory

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Embodiment Construction

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

[0029] figure 1 It is a system diagram of a semiconductor device according to an embodiment of the present invention. Please refer to figure 1 , in this embodiment, the semiconductor device 100 includes, for example, a central processing unit 110, a flash memory 120, a flash memory controller 130, a main memory 140, a system bus 150, and a system clock control circuit 160, wherein the main memory 140 is used to store the main memory 140 instructions or data required for oper...

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Abstract

A method for automatically adjusting the access cycle of a semiconductor device and its flash memory. The automatic adjustment method includes the following steps. The flash memory controller counts the number of rising edges of the system clock signal of the system bus during the detection period to obtain a system count value. The system frequency of the system clock signal is judged by the flash memory controller according to the system count value, and the number of access cycles for accessing the flash memory is judged by the flash memory controller according to the system frequency.

Description

technical field [0001] The present invention relates to a method for adjusting the access cycle, and in particular to a method for automatically adjusting the access cycle of a semiconductor device and its flash memory. Background technique [0002] The traditional way of setting the number of access cycles of flash memory is that the user calculates the corresponding value based on the frequency of the current system clock signal through the technical file lookup table, and then fills in the found value in the flash. However, the above setting method requires the user to spend time to look up the table, and the user cannot directly communicate with the flash memory controller, so the central processing unit needs to intervene to update the access cycle number. Therefore, the traditional way of setting the number of access cycles of the flash memory is a work that consumes time and effort of the user. Contents of the invention [0003] The invention provides a method for...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11C16/06G11C7/22
Inventor 刘明颖吴坤益
Owner NUVOTON