Invention Grant
US07907472B2 Semiconductor integrated circuit for fetching read data from a DDR-SDRAM operating in synchronization with a clock
有权
半导体集成电路,用于从与时钟同步操作的DDR-SDRAM读取数据
- Patent Title: Semiconductor integrated circuit for fetching read data from a DDR-SDRAM operating in synchronization with a clock
- Patent Title (中): 半导体集成电路,用于从与时钟同步操作的DDR-SDRAM读取数据
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Application No.: US12302450Application Date: 2007-08-24
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Publication No.: US07907472B2Publication Date: 2011-03-15
- Inventor: Satoshi Fukumoto , Toshiya Kogishi
- Applicant: Satoshi Fukumoto , Toshiya Kogishi
- Applicant Address: JP Osaka
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Osaka
- Agency: McDermott Will & Emery LLP
- Priority: JP2006-227482 20060824
- International Application: PCT/JP2007/066452 WO 20070824
- International Announcement: WO2008/023793 WO 20080228
- Main IPC: G11C8/00
- IPC: G11C8/00

Abstract:
A semiconductor integrated circuit (100) fetches read data from DDR-SDRAMs (110, 120) each operating in synchronization with a clock, and transfers the read data. The semiconductor integrated circuit (100) includes read buffers (104, 105) for fetching the read data from the DDR-SDRAMs (110, 120), and transferring the read data, latch timing control circuits (102, 103) for controlling respective latch timings with which the read buffers (104, 105) fetch the read data from the DDR-SDRAMs (110, 120) based on respective data strobe signals from the DDR-SDRAMs (110, 120), and a read timing control circuit (106) for controlling respective read timings with which the read buffers (104, 105) transfer the read data based on the latch timings of the latch timing control circuits (102, 103).
Public/Granted literature
- US20090154266A1 SEMICONDUCTOR INTEGRATED CIRCUIT, MEMORY SYSTEM AND ELECTRONIC IMAGING DEVICE Public/Granted day:2009-06-18
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