Conexant Systems, Inc.

Srinjoy Das

Michael Q Le

Umesh Sharma

Shyam Krishnamurthy

Surya S Bhattacharya

Peiqing Wang

Frank Van Gieson

A method and apparatus for automating and controlling the programming operations in a flash memory is provided to enable a microcontroller to accomplish various other controlling tasks while the programming operations are being conducted. A state machine is provided for controlling a plurality of sequences utilized in programming the flash memory, with various functional circuits provided to facilitate the programming and verification of flash memory cells. In a preferred embodiment, the reprogramming of the flash cells is limited to those flash cells verified as a programming failure, thus reducing the necessary programming of the flash memory cells which may impede the ability to program those flash cells. The control system may also be configured to provide for automating and controlling the erasing operations in a flash memory. The common interface circuitry may be employed to facilitates automation and control of both programming and erasing functions.

Method and apparatus for controlling the programming and erasing of flash memory

Pre-conditioning method and apparatus for mitigating erase-induced stress within flash memory devices are disclosed. The pre-condition method includes subjecting flash memory cell to a short write process to at least partially discharge the cells. The pre-condition process is applied to an entire sector at one time, and is performed immediately prior to erasing (charging) the cells within the sector.

Method and apparatus for pre-conditioning flash memory devices

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Irvine, CA, United States of America

Srinjoy Das