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7643 Datasheet(PDF) 306 Page - Renesas Technology Corp |
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7643 Datasheet(HTML) 306 Page - Renesas Technology Corp |
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306 / 424 page  Rev.2.00 Aug 28, 2006 page 185 of 202 7643 Group REJ09B0133-0200 APPLICATION 2.8 External device connection Fig. 2.8.13 Write cycle (W control, SRAM) AB0 to AB7 (Port P0) S (AB15) td(WR-DB) 20 ns (max.) AB8 to AB14 (Port P1) OE (RD of 7643) DB0 to DB7 (Port P6) Lower address Upper address tsu(D) 35 ns (min.) “H” level W (WR of 7643) twl(WR) (1 + 0.5) • 83.33 ns – 5 ns (min.) td(AH-WR), td(AL-WR) : AB15-AB8, AB7-AB0 valid time before WR of 7643 group twl(WR) : WR pulse width of 7643 group td(WR-DB) : Data bus delay time after WR of 7643 group tsu(D) : Data setup time of M5M5256BP-10 f(XIN) = 24 MHz Vcc = 5 V td(AH-RD): 0.5 • 83.33 ns – 28 ns (min.) td(AL-RD): 0.5 • 83.33 ns – 30 ns (min.) |
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