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Memory control device and memory control method

A technology of a control device and a control method, applied in the field of memory technology, can solve the problems of not knowing when the memory is turned off, unable to record time information, increasing costs, etc.

Active Publication Date: 2021-03-12
RAYMX MICROELECTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the power is turned off, the controller that controls the operation of the memory has no reference clock and cannot record the time information, so there is no way to know the period when the memory is turned off
If the real time clock (RTC) circuit is integrated or an external real time clock circuit is used, the cost and additional standby power (Standby power) will be increased

Method used

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  • Memory control device and memory control method
  • Memory control device and memory control method
  • Memory control device and memory control method

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Embodiment Construction

[0024] The following disclosure provides many different embodiments or illustrations for implementing the features of the invention. The present disclosure may repeatedly refer to numerals and / or letters in different examples, and these repetitions are for simplification and illustration, and do not specify the relationship between different embodiments and / or configurations in the following discussion.

[0025] As used herein, "coupling" or "connection" can refer to two or more elements that are in direct physical or electrical contact with each other, or that are indirect physical or electrical contact with each other, and "coupling" or " "Connected" may also refer to the mutual operation or action of two or more elements.

[0026] Please refer to figure 1 and figure 2 . figure 1 It is a schematic diagram of a memory control device 100 according to an embodiment of the present invention. figure 2 It is a flowchart of a memory control method 200 according to an embodime...

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Abstract

A memory control device includes a memory and a controller. The memory includes a plurality of memory blocks. The controller is coupled to the memory and used for selecting a first memory block of the memory blocks, and writing data into the first memory block. When the memory control device is turned off and re-operated, the controller is further used to read the voltage value distribution of the first memory block to determine the off period, and to determine the reference time according to the off period and the initial time. The voltage value distribution of the first memory block corresponds to the data.

Description

technical field [0001] This case relates to a memory technology, and in particular to a memory control device and a memory control method. Background technique [0002] Due to the NAND flash memory (NAND flash memory) process, the data stored in the memory may be incorrect due to the long-term failure to connect to the power supply. However, when the power is turned off, the controller controlling the operation of the memory has no reference clock and cannot record the time information, so it has no way of knowing the period of the memory being turned off. If the real time clock (RTC) circuit is integrated or an external real time clock circuit is used, the cost and additional standby power (Standby power) will be increased. Contents of the invention [0003] An aspect of the disclosure is a memory control device, which includes a memory and a controller. The memory contains a plurality of memory blocks. The controller is coupled to the memory and is used for selecting ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11C16/30
CPCG11C16/30
Inventor 谢易霖萧景隆陈政宇林旺圣
Owner RAYMX MICROELECTRONICS CORP