Importance

Loading Importance Indicators...

Abstract

Methods of performing a sector erase of flash memory devices incorporating built-in self test circuitry are provided. The present invention employs an interactive verification and sector erase algorithm to verify and repeatedly erase the sector until a portion of the groups of each page of the sector are erased or a first maximum number of erase pulses is achieved. The algorithm further includes a word verification and erase operation that sequentially verifies and erases each word of the sector until each word is erased or a second maximum number of erase pulses is achieved. The second maximum number of erase pulses may be based on a function of the first maximum number of erase pulses. The second maximum number of erase pulses may be input to the sector erase algorithm as a multi-bit code. The second maximum number of erase pulses and conversion of the multi-bit code may be based on a binary multiple of the first maximum number of erase pulses.

Loading the Abstract Image...

First Claim