Invention Grant
- Patent Title: Concurrent memory bank access and refresh retirement
- Patent Title (中): 并发记忆库访问和刷新退休
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Application No.: US12635543Application Date: 2009-12-10
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Publication No.: US08151044B2Publication Date: 2012-04-03
- Inventor: Robert Proesbsting
- Applicant: Robert Proesbsting
- Applicant Address: US DE Wilmington
- Assignee: Intellectual Ventures I LLC
- Current Assignee: Intellectual Ventures I LLC
- Current Assignee Address: US DE Wilmington
- Agency: Schwabe, Williamson & Wyatt, P.C.
- Main IPC: G06F12/00
- IPC: G06F12/00

Abstract:
A dynamic random access memory integrated circuit and method includes internal refresh control and an array configured to receive read and write access requests having priority over pending refresh requests, wherein refresh requests are queueable and retired on clock cycles not requiring an access of the array and complete in one clock cycle. No on-board cache memory is required. A method includes: determining within the circuit when one of the banks of the array requires a refresh, prioritizing read and write access requests over pending refresh requests, read access requests initiating an access to the array without determining whether data is available from outside the array, and retiring within a clock cycle one pending refresh request to a bank when that bank has pending refresh requests and does not also require an access of the array on that clock cycle.
Public/Granted literature
- US20100095058A1 INTEGRATED CIRCUIT RANDOM ACCESS MEMORY CAPABLE OF AUTOMATIC INTERNAL REFRESH OF MEMORY ARRAY Public/Granted day:2010-04-15
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