DRAM module and method of using SRAM to replace damaged DRAM cell
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United States of America Patent
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Aug 13, 2002
Grant Date -
May 30, 2002
app pub date -
Nov 30, 2000
filing date -
Nov 30, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A DRAM module and a method of replacing a damaged DRAM cell in the DRAM module with a SRAM. The DRAM module has at least a non-volatile memory and a DRAM control logic circuit. In the process of replacing the damaged DRAM with the SRAM, the damaged address data is compared to DRAM address data. If the data are consistent, the address of the SRAM is used to access data. Meanwhile, the output enabling signal of the DRAM cell is turned off. It can thus assist the computer to correctly find the good DRAM cell for data access, so as to ensure a normal operation of the computer.
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