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CAS latency information


Column address strobe latency, also called CAS latency or CL, is the delay in clock cycles between the READ command and the moment data is available.[1][2] In asynchronous DRAM, the interval is specified in nanoseconds (absolute time).[3] In synchronous DRAM, the interval is specified in clock cycles. Because the latency is dependent upon a number of clock ticks instead of absolute time, the actual time for an SDRAM module to respond to a CAS event might vary between uses of the same module if the clock rate differs.

  1. ^ Stokes, Jon "Hannibal" (1998–2004). "Ars Technica RAM Guide Part II: Asynchronous and Synchronous DRAM". Ars Technica. Archived from the original on 2012-11-01.
  2. ^ Jacob, Bruce L. (December 10, 2002), Synchronous DRAM Architectures, Organizations, and Alternative Technologies (PDF), University of Maryland
  3. ^ Memory technology evolution: an overview of system memory technologies, HP, July 2008

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