摘要:
A non-volatile semiconductor memory device includes an electrically data rewritable non-volatile semiconductor memory cell (M), and a write circuit (2 to 8) for writing data in the memory cell, the write circuit writing a data in the memory cells, the writing a data in the memory cell by supplying a write voltage (Vpgm) and a write control voltage (VBL) to the memory cell, continuing the writing of the data in the memory cell by changing the value of the write control voltage (VBL) in response to the advent of a first write state of the memory cell, and inhibiting any operation of writing a data to the memory cell (M) by further changing the value of the write control voltage (VBL) to Vdd in response to the advent of a second write state of the memory cell.
摘要:
A storage system is provided that includes a memory controller for controlling a throughput rate for utilizing digital content by an accessing system, wherein the throughput rate is associated with information related to the digital content stored as a file. Also, a system for utilizing digital content is provided. The system includes an accessing system for utilizing the digital content, wherein the digital content is released to the accessing system at a controlled throughput rate and the throughput rate is associated with information related to the digital content stored as a file.
摘要:
The throughput of the memory system is improved where data in a data stream is cryptographically processed by a circuit without involving intimately any controller. The data stream is preferably controlled so that it has a selected data source among a plurality of sources and a selected destination among a plurality of destinations, all without involving the controller. The cryptographic circuit may preferably be configured to enable the processing of multiple pages, selection of one or more cryptographic algorithms among a plurality of algorithms to encryption and/or decryption without involving a controller, and to process data cryptographically in multiple successive stages without involvement of the controller. For a memory system cryptographically processing data from multiple data streams in an interleaved manner, when a session is interrupted, security configuration information may be lost so that it may become impossible to continue the process when the session is resumed. To retain the security configuration information, the controller preferably causes the security configuration information for the session to be stored before the interruption so that it is retrievable after the interruption.
摘要:
Programming time is reduced in a non-volatile memory in a multi-pass programming process. In a first programming pass, high state cells are programmed by a sequence of program pulses to identify fast and slow high state cells, while lower state cells are locked out from programming. Once identified, the fast high state cells are temporarily locked out from programming while the slow high state cells continue being programmed to their final intended state. Further, the program pulses are sharply stepped up to program the slow high state cells. In a second programming pass, the fast high state cells are programmed along with the other, lower state cells, until they all reach their respective intended states. A time savings is realized compared to approaches in which all high state cells are programmed in the first programming pass.
摘要:
Part of the latency from memory read or write operations is for data to be input to or output from the data latches of the memory via an I/O bus. Methods and circuitry are present for improving performance in non-volatile memory devices by allowing the memory to perform some of these data caching and transfer operations in the background while the memory core is busy with a read operation. A scheme for caching read data is implemented so that even when the read for a current page on a current wordline must be preceded by a prerequisite read of data on an adjacent wordline, the prerequisite read along with any I/O access is preemptively done in the cycle for reading a previous page so that the current read can be performed while the previously read page is busy with the I/O access.