| 摘要 |
Disclosed is a data strobe signal generator of the SDRAM device. The data strobe signal generator according to the present invention does not have to use a current output state signal generator, by using a pipe counter signal which has been issued at the previous read operation, thereby proving various advantages, such as simple circuit design, simple operation and small chip size. A data strobe signal generator in a SDRAM memory device, includes: a preamble controller for controlling a preamble state of a data strobe signal in response to a control signal; a plurality of pull-up/pull-down signal drivers for producing pull-up and pull-down signals through a toggling operation in response to previous pull-down and pull-up signals; and a data strobe signal driver for outputting the data strobe signal in response to the pull-up and pull-down signals.
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