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H8S2245 датащи(PDF) 200 Page - Renesas Technology Corp |
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H8S2245 датащи(HTML) 200 Page - Renesas Technology Corp |
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200 / 818 page ![]() Section 6 Bus Controller Rev.3.00 Mar. 26, 2007 Page 158 of 772 REJ09B0355-0300 (3) 16-Bit 2-State Access Space Figures 6.12 to 6.14 show bus timings for a 16-bit 2-state access space. When a 16-bit access space is accessed, the upper half (D 15 to D8) of the data bus is used for the even address, and the lower half (D 7 to D0) for the odd address. Wait states cannot be inserted. Bus cycle T1 T2 Address bus φ CSn AS RD D15 to D8 Valid D7 to D0 Invalid Read HWR LWR D15 to D8 Valid D7 to D0 High impedance Write High Note: n = 0 to 3 Figure 6.12 Bus Timing for 16-Bit 2-State Access Space (1) (Even Address Byte Access) |
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