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32C81 Datasheet(PDF) 79 Page - Renesas Technology Corp |
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32C81 Datasheet(HTML) 79 Page - Renesas Technology Corp |
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79 / 85 page  page 79 3 8 f o 4 0 0 2 , 1 0 . n u J 0 0 . 1 . v e R p u o r G 1 8 / C 2 3 M 5. Electrical Characteristics (VCC=3.3V) tcyc 18ns.max td(BCLK-RAS) 18ns.max td(BCLK-CAS) th(BCLK-RAS) 0ns.min th(BCLK-CAS) 0ns.min tsu(CAS-RAS)(1) 18ns.max tcyc td(BCLK-CAS) tsu(CAS-RAS)(1) th(BCLK-RAS) 0ns.min th(BCLK-CAS) 0ns.min 18ns.max td(BCLK-RAS) BCLK DW Vcc=3.3V RAS CASL CASH BCLK DW RAS CASL CASH NOTES: 1. It varies with the operation frequency. tsu(CAS-RAS)=(tcyc/2-13)ns.min Measurement conditions • VCC=3.0 to 3.6V • Input high and low voltage: VIH=1.5V, VIL=0.5V • Output high and low voltage: VOH=1.5V, VOL=1.5V Refresh timing (CAS-before-RAS refresh) Memory expansion mode and microprocessor mode NOTES: 1. It varies with the operation frequency. tsu(CAS-RAS)=(tcyc/2-13)ns.min Refresh timing (Self-refresh) Figure 5.15 VCC=3.3V Timing Diagram (6) |
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