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3822 Datasheet(PDF) 97 Page - Renesas Technology Corp |
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3822 Datasheet(HTML) 97 Page - Renesas Technology Corp |
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97 / 328 page  2.2 Interrupts APPLICATION 2–31 3822 GROUP USER’S MANUAL 2.2.6 Notes on use When using interrupts, note the following. (1) Register setting sFix bit 7 of the interrupt control register 2 (address 003F16) to “0.” Nothing is allocated for this bit, however, do not write “1” to it. sWhen using I/O ports P42, P43, P50 and P51 as input ports, put the INT interrupts corresponding to each port into the disabled state. sWhen the active edges of the following interrupts are switched, the corresponding interrupt request bit may be set to “1.” To avoid accepting an interrupt request, we recommend the register setting example shown in Figure 2.2.17. qINT0 interrupt to INT3 interrupt qCNTR0 interrupt and CNTR1 interrupt Fig. 2.2.17 Register setting example Set the corresponding interrupt enable bit to “0” Set the interrupt active edge Set the corresponding interrupt request bit to “0” Set the corresponding interrupt enable bit to “1” |
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