发明授权
US08284602B2 Pipe latch circuit of multi-bit prefetch-type semiconductor memory device with improved structure
有权
具有改进结构的多位预取型半导体存储器件的管锁存电路
- 专利标题: Pipe latch circuit of multi-bit prefetch-type semiconductor memory device with improved structure
- 专利标题(中): 具有改进结构的多位预取型半导体存储器件的管锁存电路
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申请号: US13216799申请日: 2011-08-24
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公开(公告)号: US08284602B2公开(公告)日: 2012-10-09
- 发明人: Beom Ju Shin
- 申请人: Beom Ju Shin
- 申请人地址: KR Icheon-si
- 专利权人: Hynix Semiconductor Inc.
- 当前专利权人: Hynix Semiconductor Inc.
- 当前专利权人地址: KR Icheon-si
- 代理机构: Lowe Hauptman Ham & Berner, LLP
- 优先权: KR2004-110495 20041222
- 主分类号: G11C7/00
- IPC分类号: G11C7/00
摘要:
Provided is a pipe latch circuit of a multi-bit pre-fetch type semiconductor memory device with an advanced structure. The pipe latch circuit of the present invention comprises: a first latch circuit for latching pre-fetched plural bits of input data from global input/output lines; a first multiplexing circuit comprises a first multiplexer for selecting a certain input data from first group of the input data in response to a first selection control signal and a second multiplexer for selecting a certain input data from second group of the input data in response to a second selection control signal; a second multiplexing circuit for setting a sequence of output data from the first multiplexing circuit in response to a third selection control signal; and a second latch circuit comprises a third latch for latching a first output data from the second multiplexing circuit in response to a first output latch control signal and a fourth latch for latching a second output data from the second multiplexing circuit in response to a second output latch control signal. The invention cuts down the overall chip size and current consumption of the pipe latch circuit by reducing the number of multiplexers necessary for arranging the pre-fetched data in a predetermined output order.
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