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7733 データシート(PDF) 343 Page - Renesas Technology Corp |
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7733 データシート(HTML) 343 Page - Renesas Technology Corp |
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343 / 940 page  CONNECTING EXTERNAL DEVICES 7733 Group User’s Manual 12–18 <<No wait>> Sampling timing Clock 1 CPU E RDY ALE Bus is not in use. Bus is in use. Ready state is terminated. “L” level which is input to pin RDY is accepted, so that signal E is stopped at “H” level for 1 cycle of clock 1 (area ), and CPU is stopped at “L” level. “L” level which is input to pin RDY is not accepted, but CPU is stopped at “L” level. “L” level which is input to pin RDY is accepted, so that signal E is stopped at “L” level for 1 cycle of clock 1 (area ), and CPU is stopped at “L” level. “L” level which is input to pin RDY is not accepted because it is sampled immediately before a wait generated by software (area ), but CPU is stopped at “L” level. Sampling timing Clock 1 CPU RDY ALE <<Wait 0>> Bus is in use. Sampling timing Clock 1 CPU RDY ALE <<Wait 1>> Bus is in use. E E Fig. 12.3.1 Timings when ready state is accepted and terminated 12.3 Ready function |
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