3 Replies Latest reply on Nov 7, 2019 2:15 AM by SudheeshK_26

    ODT termination CY7C2665KV18

    BrId_4495301

      Hi,

      I'm using tha sRAM CY7C2665KV18 and I'm using VDDQ = 1.8 V with Vref = 0.9 V.

      1) Is the RQ calculation the same when VDDQ = 1.5 V?

       

      In the "PROGRAMMABLE IMPEDANCE" section, the impedance is RQ*5.

      In the "ON-DIE TERMINATION" section, the impedance range is 52.5 and 105 that follows RQ/3.3 for 175<= RQ <= 350 (ODT pin LOW).

      2) What is the correct formula to calculate output impedance?

       

      Thanks

      Best regards

       

      Bryan