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709359L7PFGI8 Datasheet(PDF) 9 Page - Integrated Device Technology |
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709359L7PFGI8 Datasheet(HTML) 9 Page - Integrated Device Technology |
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9 / 15 page  6.42 IDT709359/49L High-Speed 8/4K x 18 Synchronous Pipelined Dual-Port Static RAM Industrial and Commercial Temperature Ranges 9 Timing Waveform of Write with Port-to-Port Flow-Through Read(4,5,7) NOTES: 1. B1 Represents Bank #1; B2 Represents Bank #2. Each Bank consists of one IDT709359/49 for this waveform, and are setup 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 = VIH. 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. 7. All timing is the same for both Left and Right ports. Port "A" may be either Left or Right port. Port "B" is the opposite from Port "A". Timing Waveform of a Bank Select Pipelined Read(1,2) tSC tHC CE0(B1) ADDRESS(B1) A0 A1 A2 A3 A4 A5 tSA tHA CLK 5633 drw 09 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 "A" CLK "B" R/ W "B" ADDRESS "A" R/ W "A" CLK "A" ADDRESS "B" NO MATCH MATCH NO MATCH MATCH VALID tCWDD tCD1 tDC DATAOUT "B" 5633 drw 10 VALID VALID tSW tHW tSA tHA tSD tHD tHW tCD1 tCCS tDC tSA tSW tHA (6) (6) |
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