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H8/3024 Datasheet(PDF) 92 Page - Renesas Technology Corp |
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H8/3024 Datasheet(HTML) 92 Page - Renesas Technology Corp |
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92 / 841 page  Section 2 CPU Rev. 2.00 Sep 20, 2005 page 54 of 800 REJ09B0260-0200 2.9.2 On-Chip Memory Access Timing On-chip memory is accessed in two states. The data bus is 16 bits wide, permitting both byte and word access. Figure 2.15 shows the on-chip memory access cycle. Figure 2.16 indicates the pin states. All H8/3024 Group models have a function for changing the method of outputting addresses from the address pins. For details see section 6.3.5, Address Output Method. T state Bus cycle Internal address bus Internal read signal Internal data bus (read access) Internal write signal Internal data bus (write access) φ 1 T state 2 Read data Address Write data Figure 2.15 On-Chip Memory Access Cycle T , , , AS φ 1 T2 Address bus D to D 15 0 RD HWR LWR High Address High impedance Figure 2.16 Pin States during On-Chip Memory Access (Address Update Mode 1) |
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