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7733 Datasheet(PDF) 696 Page - Renesas Technology Corp |
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7733 Datasheet(HTML) 696 Page - Renesas Technology Corp |
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696 / 940 page  CONNECTING EXTERNAL DEVICES 7735 Group User’s Manual 12–20 M37735MHBXXXFP RDY RSMP CSn n : 0 to 4 Chip select signal _____ Fig. 12.3.1 Connection example when signal RSMP is used 12.3.1 Operation in ready state ____ When “L” level is input to pin RDY, this signal is accepted at the falling edge of clock φ1 and the microcomputer ____ enters the ready state. The ready state can be terminated by setting pin RDY’s level to “H” again. When ____ “H” level is input to pin RDY, this signal is also accepted at the falling edge of clock φ1 and the ready state is terminated. Figure 12.3.2 shows timings when the ready state is accepted and terminated. When generating a wait which is equivalent to 1 cycle of clock φ1 by using the ready function, use signals _____ ____ RSMP and CSn (n = 0 to 4). These signals facilitate to generate a signal input to pin RDY. Figure 12.3.1 _____ _____ shows a connection example when signal RSMP is used. Note that signal RSMP is affected by the software _____ wait. Figure 12.3.3 shows the relationship between the software wait and signal RSMP. Refer to section “17.1 Memory expansion” for the way to use the ready function. 12.3 Ready function |
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