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H8/3028F Datasheet(PDF) 171 Page - Renesas Technology Corp |
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H8/3028F Datasheet(HTML) 171 Page - Renesas Technology Corp |
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171 / 923 page ![]() Rev. 2.00, 09/03, page 141 of 890 6.4.5 Basic Bus Control Signal Timing 8-Bit, Three-State-Access Areas Figure 6.9 shows the timing of bus control signals for an 8-bit, three-state-access area. The upper data bus (D15 to D8) is used in accesses to these areas. The LWR pin is always high. Wait states can be inserted. Bus cycle External address in area n Valid Invalid Valid Undetermined data High φ Address bus CSn AS RD D15 to D8 D7 to D0 HWR LWR D15 to D8 D7 to D0 Read access Write access Note: n = 7 to 0 T1 T2 T3 Figure 6.9 Bus Control Signal Timing for 8-Bit, Three-State-Access Area |
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