Method and device for writing to a flash memory

Details Method and device for writing to a flash memory Method and device for writing to a flash memory

2007-04-10

2011-10-18

Patel, Hetul (Department: 2186)

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

C711SE12008

Reexamination Certificate

active

08041882

ABSTRACT:
For NAND flash devices, two specific bounds for the program time are defined in the data sheets: a typical program time, during which more than 50% of all pages are programmed, and a maximum program time. Reduction of the maximum program time to an effective program time is possible using the following method for writing to a flash memory, comprising the steps of specifying an effective program time that is between typical and maximum program time, writing first data to the flash memory, after the effective program time checking if the programming cycle is finished, if it is finished writing second data to the flash memory, and if it is not finished writing the at least second data to a buffer memory and marking them as not to be overwritten, repeating the previous steps as long as further data are to be stored, determining a free location in a flash memory, and copying the at least second data from the buffer memory to the determined location in the flash memory.

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