Invention Grant
US08120978B2 Semiconductor memory device having auto-precharge function 有权
具有自动预充电功能的半导体存储器件

Semiconductor memory device having auto-precharge function
Abstract:
To provide a semiconductor memory device including: a first clock generation circuit and a second clock generation circuit that generate a first internal clock and a second internal clock, respectively; a latency counter that counts latency synchronously with the first internal clock; and a recovery counter that counts a write recovery period synchronously with the second internal clock. The second clock generation circuit activates the second internal clock when auto-precharge is designated, and deactivates the second internal clock when the auto-precharge is not designated. With this configuration, the recovery counter does not perform any counting operation when an auto-precharge function is not operated, and thus unnecessary power consumption can be prevented.
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