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IDT709269S9PF Datasheet(PDF) 9 Page - Integrated Device Technology |
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IDT709269S9PF Datasheet(HTML) 9 Page - Integrated Device Technology |
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9 / 15 page  6.42 IDT709269S/L Preliminary High-Speed 16K x 16 Synchronous Pipelined Dual-Port Static RAM Industrial and Commercial Temperature Ranges 9 Timing Waveform of Left Port Write to Flow-through Right Port Read(4,5) Timing Waveform of a Multi-device Pipelined Read(1,2) tSC tHC CE0(B1) ADDRESS(B1) A0 A1 A2 A3 A4 A5 tSA tHA CLK 3493 drw 08 Q0 Q1 Q3 DATAOUT(B1) tCH2 tCL2 tCYC2 (3) ADDRESS(B2) A0 A1 A2 A3 A4 A5 tSA tHA CE0(B2) DATAOUT(B2) Q2 Q4 tCD2 tCD2 tCKHZ tCD2 tCKLZ tDC tCKHZ tCD2 tCKLZ (3) (3) tSC tHC (3) tCKHZ (3) tCKLZ (3) tCD2 A6 A6 tDC tSC tHC tSC tHC DATAIN L CLK R R/ W R ADDRESS L R/ W L CLK L ADDRESS R NO MATCH MATCH NO MATCH MATCH VALID tCWDD tCD1 tDC DATAOUT R 3493 drw 09 VALID VALID tSW tHW tSA tHA tSD tHD tHW tCD1 tCCS tDC tSA tSW tHA (6) (6) NOTES: 1. B1 Represents Device #1; B2 Represents Device #2. Each Device consists of one 709269 for this waveform, and are set up for depth expansion in this example. ADDRESS(B1) = ADDRESS(B2) in this situation. 2. UB, LB, OE, and ADS = VIL; CE1(B1), CE1(B2) , R/W, CNTEN, and CNTRST = V IH . 3. Transition is measured 0mV from Low or High-impedance voltage with the Output Test Load (Figure 2). 4. CE0, UB, LB, and ADS = VIL; CE1, CNTEN, and CNTRST = VIH. 5. OE = VIL for the Right Port, which is being read from. OE = VIH for the Left Port, which is being written to. 6. If tCCS < maximum specified, then data from right port READ is not valid until the maximum specified for tCWDD. If tCCS > maximum specified, then data from right port READ is not valid until tCCS + tCD1. tCWDD does not apply in this case. |
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