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Alessandro Tumminia

Davide Torrisi

Edoardo Nocita

Antonino Mondello

Luigi Buono

A method is described for programming memory cells, in particular of the Flash type. In accordance with the method, a verification is performed with a first parallelism (M) in which a reading is carried out for determining the state of a group of memory cells, a determination is performed of a programming parallelism (np), based on the results of the verification, and a real programming of the memory cells carried out with the programming parallelism (np). An architecture is also described for programming memory cells in particular of the Flash type.

Method for programming of memory cells, in particular of the flash type, and corresponding programming architecture

An automatic redundancy system may exploit an existing microprocessor management system on chip for carrying out autonomously, without communicating with an external testing machine, the operations of: writing data in the memory array according to one or more pre-established test patterns, verifying data successively read from the memory array, and substituting failed elements of the memory array with equivalent redundancy structures. A logic structure may detect and store memory array failures upstream of the output data path. Thereby, data collection relating to failures may be accomplished more quickly and without any interaction with the testing machine apart from communicating the end of the execution of the redundancy process.

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Catania, Italy

Alessandro Tumminia