FlashXE® - eXtended Endurance

FlashXE® - eXtended Endurance

The FlashXE® eco-system is a collective of features, mechanisms and processes aimed at increasing the reliability of flash memory

FlashXE® can be understood in three stages; from charactertistics and qualification, to calibration and error prevention, to error correction.

The collective of features and process’ start to optimize long before errors occur or the system is even assembled. A qualification process characterizes each supported flash type over its lifetime and different operating temperatures. This knowledge is then implemented in the basic flash support of the firmware and delivered with the controller. The next phase, during operation, ensures the controller continuously adjusts the voltage levels of the read-out circuit over the flash’s lifetime. The controller also takes further steps to prevent errors such as dynamic data-refresh®, near-miss ECC and read disturb management. In the subsequent phase, in which errors occur in spite of the precautions mentioned before, there is a strong error correction in two separate modules, one being based on a BCH-code as well as the new generalized concatenated code (GCC) with support for soft-decoding.

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