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7721 Datasheet(PDF) 131 Page - Renesas Technology Corp |
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7721 Datasheet(HTML) 131 Page - Renesas Technology Corp |
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131 / 577 page  TIMER A 7721 Group User’s Manual 8–12 8.3 Timer mode Count starts Setting count start bit to “1.” b7 b0 Count start register (Address 4016) Timer A0 count start bit Timer A1 count start bit Timer A2 count start bit Timer A3 count start bit Timer A4 count start bit Setting interrupt priority level b7 b0 Timer Ai interrupt control register (i = 0 to 4) (Addresses 7516 to 7916) Interrupt priority level select bits When using interrupts, set these bits to one of levels 1 to 7. When disabling interrupts, set these bits to level 0. From preceding Figure 8.3.2. Setting port P5 direction register b7 b0 Port P5 direction register (Address D16) TA2IN pin TA3IN pin TA4IN pin When gate function is selected, set the bit corresponding to the TAjIN pin to “0.” Fig. 8.3.3 Initial setting example for registers relevant to timer mode (2) |
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