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TMS44409-60DJ Datasheet(PDF) 10 Page - Texas Instruments |
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TMS44409-60DJ Datasheet(HTML) 10 Page - Texas Instruments |
10 / 26 page TMS44409, TMS44409P 1048576-WORD BY 4-BIT DYNAMIC RANDOM-ACCESS MEMORY SMHS563 – JULY1995 10 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 PARAMETER MEASUREMENT INFORMATION 1.31 V VCC = 5 V R1 + 828 W R2 + 295 W R L + 218 W CL = 100 pF (see Note A) Output Under Test Output Under Test CL = 100 pF (see Note A) (b) ALTERNATE LOAD CIRCUIT (a) LOAD CIRCUIT NOTE A: CL includes probe and fixture capacitance. Figure 1. Load Circuits for Timing Parameters RAS CAS A0 – A9 W OE DQ1 – DQ4 tRC Row Column Don’t Care Don’t Care Don’t Care Don’t Care Don’t Care Valid Data Out tRAS tRP tCSH tT tRCD tRSH tCRP tCAS tRAD tASC tRAL tASR tRCS tCAH tRRH tRCH tCAC tCEZ tAA tCLZ tRAC tOEA tROH tOEZ tCP See Note A Hi-Z tRAH tREZ tWEZ tWPE tCAL NOTE A: Output can go from the high-impedance state to an invalid-data state prior to the specified access time. Figure 2. Read-Cycle Timing |
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