| 摘要 |
PURPOSE: A peak current prevention circuit is provided to prevent generation of a peak current by sequentially driving word lines within a given time period upon a refresh mode and by driving a sense amplifier to the same shape of a corresponding word line with some time difference with the word line. CONSTITUTION: A peak current prevention circuit includes an address latch(65) for coding/outputting an internal output address at a normal mode, coding an external output address and grouping/outputting them in a given time unit. Transfer gates(66A-66N) pass the output address of the address latch(65) in a normal mode, and transfer the output address of the address latch(65) to delays(67A-67N) in a refresh mode, based on a refresh signal(RF). Delays(67A-67N) delay the output address of the transfer gates(66A-66N) for a given time period in a refresh mode to output them to a row decoder for driving word lines and a controller for driving a sense amplifier.
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