Semiconductor storage device in which commands are sequentially fed to a plurality of flash memories to continuously write data
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United States of America Patent
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Apr 27, 2004
Issued Date -
N/A
app pub date -
Mar 14, 2003
filing date -
Jun 22, 1992
priority date (Note) -
Expired
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Abstract
A semiconductor storage apparatus such as a disk pack in which a controller sends a second write command or instruction while a write operation for a first write command or instruction is being carried out. The storage apparatus includes a plurality of flash memories which operate slower in writing data thereinto than the reading data therefrom, a write buffer memory in which data are temporarily held, a processor which controls the data writing operation and which transfers and analyzes commands and statuses, an address controller which generates physical addresses, a circuit which generates a writing supply voltage Vpp for the flash memories, a memory address bus, and a data bus. The semiconductor disk pack is connected to a standard bus in a personal computer or the like. The processor writes the data of one word into a desired one of the flash memories, and it continuously writes the data of one word into an accessible one of the other flash memories during a latency which extends until the desired flash memory becomes capable of writing the next data of one word thereinto.
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