摘要:
Method and device for reading data from a semiconductor device, where tR is a read operation time, tT is a buffer transfer time, and tH is a host transfer time, where at least two of tR, tT, and tH may be overlapped to reduce a total transfer time.
摘要:
The present invention is directed to a dual chip package that is connected to a host and includes a first memory chip and a second memory chip. Each of the first and second memory chips includes a flash memory; an option pad connected to either a first or second voltage; a register configured to store a flag signal indicating whether a memory chip is selected; a comparator circuit configured to compare a flag signal stored in the register with a logic value apparent at the option pad to generate a flash access signal. Each of the first and second memory chips also includes a memory controller unit configured to access the flash memory in response to the flash access signal, and an interrupt controller unit configured to provide an interrupt signal to the host in response to the flash access signal and a control signal provided from the host.
摘要:
Provided are a test system and a related high voltage measurement method. The method includes applying an external voltage signal to one or more of a plurality of DUTs via the shared channel, comparing the external voltage signal with a high voltage signal internally generated by the one or more DUTs and generating a corresponding comparison result, and determining a voltage level for each respective high voltage signal in accordance with the comparison result.
摘要:
A flash memory device is disclosed and includes a memory cell array comprising memory cells arranged in rows and columns, a page buffer circuit having a single latch structure and configured to read data from a selected page in the memory cell array, and a controller controlling the page buffer circuit to detect memory cells having an improper voltage distribution causes by charge leakage within the selected page.
摘要:
In an embodiment, a method of driving a program operation in a nonvolatile semiconductor memory device is operable without discharging a bitline connected to a memory cell to be programmed between a program period and a verifying period. This remarkably improves programming speed and reduces current consumption.
摘要:
An erase voltage generation circuit providing a uniform erase execution time and a non-volatile semiconductor memory device having the same, in which the erase voltage generation circuit includes a high voltage generation unit, a voltage level detection unit, an execution time checking unit and a discharging unit. The high voltage generation unit generates an erase voltage. The voltage level detection unit detects the erase voltage and generates a level detection signal. The level detection signal is activated when the erase voltage reaches a target voltage. The execution time checking unit generates an execution end signal that is activated in response to the lapse of an erase execution time from the activation of the level detection signal. The discharging unit discharges the erase voltage as a discharge voltage. The high voltage generation unit is disabled in response to the activation of the execution end signal, and the discharging unit is enabled in response to the activation of the execution end signal.
摘要:
A row decoder preventing leakage current and a semiconductor memory device including the same are provided. The row decoder includes an address decoder and a selection signal generator. The address decoder decodes a predetermined address signal and activates an enable signal. The selection signal generator electrically connects a boosted voltage node to an output node to activate a block selection signal when the enable signal is activated and electrically breaks a path between the boosted voltage node and the output node and a path between the boosted voltage node and a ground voltage node when the enable signal is deactivated. The selection signal generator includes a feedback circuit, a switch, and a direct current (DC) path breaker. The feedback circuit is electrically connected to the output node to generate an output voltage that varies with a voltage level of the block selection signal. The switch transmits the output voltage of the feedback circuit to the output node. The DC path breaker turns on the switch when the enable signal is activated and turns off the switch when the enable signal is deactivated. Accordingly, when a supply voltage applied to the semiconductor memory device is low, a DC path is broken in the row decoder, thereby preventing the leakage current.
摘要:
Disclosed is a page buffer for a nonvolatile semiconductor memory device and a related method of operation. The page buffer includes a unidirectional driver between a loading latch unit used for storing a data bit in the page buffer and a bitline used to program a memory cell connected to the page buffer.
摘要:
In one aspect, a word line enable method in a flash memory device includes driving a signal line corresponding to a selected word line with a word line voltage, and stepwise increasing a gate voltage of a switch transistor connected between the selected word line and the signal line during a program execute period.
摘要:
The disclosure is NAND flash memory device with a partial copy-back mode, comprised of a cell array constructed of pages, a page buffer block composed of page buffers storing data in correspondence with the pages, a selection circuit for designating one or more pages to be initialized in the partial copy-back mode, and a control circuit for generating control signals to operate the page buffers and the selection circuit.