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S75WS256NDFBAWMB Datasheet(PDF) 201 Page - SPANSION |
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S75WS256NDFBAWMB Datasheet(HTML) 201 Page - SPANSION |
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201 / 216 page ![]() February 17, 2005 S75WS-N-00_A0 S75WS256Nxx Based MCPs 199 Advance Information Table 34.16 Burst Write Timing Parameters—BCR[8] = 0 Symbol 70ns/80 MHz 85ns/66 MHz Units Min Max Min Max tCLK 12.5 15 ns tHD 22 ns tKHTL 811 ns tSP 33 ns Notes: 1. Non-default BCR settings: Latency code two (three clocks); Wait active Low; Wait asserted during delay. 1. To allow self-refresh operations to occur between transactions, CE# must remain High for at least 5ns (tCBPH) to schedule the appropriate internal refresh operation. CE# can stay Low between burst Read and burst Write operations. See How Extended Timings Impact CellularRAM™ Operation for restrictions on the maximum CE# Low time (tCEM). Figure 34.17 Burst Write Followed by Burst Read Table 34.17 Write Timing Parameters—Burst Write Followed by Burst Read Symbol 70ns/80 MHz 85ns/66 MHz Units Min Max Min Max tCBPH 55 ns tCLK 12.5 20 15 20 ns tCSP 4 20520 ns tHD 22 ns tSP 33 ns tOHZ High-Z High-Z tCBPH High-Z VIH VIL VIH VIL VIH VIL VIH VIL VIH VIL VIH VIL VOH VOL A[22:0] ADV# CE# LB#/UB# DQ[15:0] WAIT tSP tCSP tSP tHD tHD VIH VIL OE# WE# tSP tHD tCLK VIH VIL CLK tHD tBOE Valid Address tSP tHD Valid Address tSP tHD (Note 2) tCSP tSP tHD tSP tHD D[0] D[3] D[2] D[1] Valid Output Valid Output Valid Output Valid Output VOH VOL tKOH tACLK tSP tHD High-Z Don't Care Undefined Legend: |
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