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METHOD OF REFRESHING A DYNAMIC RANDOM ACCESS MEMORY AND CORRESPONDING DYNAMIC RANDOM ACCESS MEMORY DEVICE, IN PARTICULAR INCORPORATED INTO A CELLULAR MOBILE TELEPHONE
METHOD OF REFRESHING A DYNAMIC RANDOM ACCESS MEMORY AND CORRESPONDING DYNAMIC RANDOM ACCESS MEMORY DEVICE, IN PARTICULAR INCORPORATED INTO A CELLULAR MOBILE TELEPHONE
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机译:刷新集成到蜂窝电话中的动态随机访问存储器和相应的动态随机访问存储器的方法
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摘要
A method is for refreshing a dynamic random access memory coupled to an error correction system, which uses an error correcting code. The dynamic random access memory includes groups of memory cells storing bits, each group of memory cells being subdivided into packets of memory cells. Each packet of memory cells is supplemented with the error correcting code. The method includes performing a retention test on each group of memory cells, and increasing a memory refresh frequency if a number of test groups of memory cells having at least one erroneous packet is greater than a threshold.
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