发明授权
- 专利标题: Timing control circuit and semiconductor storage device
- 专利标题(中): 定时控制电路和半导体存储设备
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申请号: US12208978申请日: 2008-09-11
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公开(公告)号: US07772911B2公开(公告)日: 2010-08-10
- 发明人: Akira Ide , Yasuhiro Takai , Tomonori Sekiguchi , Riichiro Takemura , Satoru Akiyama , Hiroaki Nakaya
- 申请人: Akira Ide , Yasuhiro Takai , Tomonori Sekiguchi , Riichiro Takemura , Satoru Akiyama , Hiroaki Nakaya
- 申请人地址: JP Tokyo
- 专利权人: Elpida Memory, Inc.
- 当前专利权人: Elpida Memory, Inc.
- 当前专利权人地址: JP Tokyo
- 代理机构: Sughrue Mion, PLLC
- 优先权: JP2007-238013 20070913
- 主分类号: G06F1/04
- IPC分类号: G06F1/04
摘要:
Disclosed is a timing control circuit that receives a first clock having a period T1, a group of second clocks of L different phases spaced apart from each other at substantially equal intervals and selection signals m, n supplied thereto and generates a fine timing signal delayed from the rising edge of the first clock signal by a delay td of approximately td=m·T1+n·(T2/L). The timing control circuit includes a coarse delay circuit and a fine delay circuit. The coarse delay circuit includes a counter for counting a rising edge of the first clock signal after an activate signal is activated and generates a coarse timing signal whose amount of delay from the first clock signal is approximately m·T1. The fine delay circuit comprises L-number of multiphase clock control delay circuits disposed in parallel, delays by n·T2/L the timing of sampling of the coarse timing signal by respective clocks of the group of L-phase second clocks, and takes the OR among the resulting delayed pulses to thereby produce the fine timing signal.
公开/授权文献
- US20090102524A1 TIMING CONTROL CIRCUIT AND SEMICONDUCTOR STORAGE DEVICE 公开/授权日:2009-04-23
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