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H8/3028F Datasheet(PDF) 213 Page - Renesas Technology Corp |
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H8/3028F Datasheet(HTML) 213 Page - Renesas Technology Corp |
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213 / 923 page ![]() Rev. 2.00, 09/03, page 183 of 890 φ Address bus T1 T2 T3 Bus cycle A RD T1 T2 (a) Idle cycle not inserted T1 T2 T3 Ti T2 (b) Idle cycle inserted T1 Simultaneous change of RD and CSn Possibility of mutual overlap CSn φ Address bus RD CSn Bus cycle B Bus cycle A Bus cycle B Figure 6.47 Example of Idle Cycle Operation (5) 6.9.2 Pin States in Idle Cycle Table 6.11 shows the pin states in an idle cycle. Table 6.11 Pin States in Idle Cycle Pins Pin State A23 to A0 Next cycle address value D15 to D0 High impedance CSnHigh* UCAS, LCAS High AS High RD High HWR High LWR High Note: * Remains low in DRAM space RAS down mode. |
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