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38C3 数据表(PDF) 91 Page - Renesas Technology Corp |
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38C3 数据表(HTML) 91 Page - Renesas Technology Corp |
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91 / 224 page ![]() 2-26 38C3 Group User’s Manual APPLICATION 2.2 Timer Fig. 2.2.24 Relevant registers setting ICON2 0 T13F16 T4 FF16 b0 b7 b0 b7 b0 b7 T12M b0 b7 00 1 0 T34M b0 b7 00 1 0 0 ICON1 1 b0 b7 IREQ2 0 b0 b7 Timer 12 mode register (address 2816) Timer 1 count stop; Clear to “0” when starting count. Timer 1 count source: f(XIN)/16 Timer 1 output selection: I/O port Timer 4 count: In progress Timer 4 count source: External count input CNTR1 Timer 34 mode register (address 2916) Set “division ratio – 1”; 63 (3F16). Interrupt control register 1 (address 3E16) Timer 1 (address 2016) Timer 1 interrupt: Enabled Timer 4 (address 2316) Set 255 (FF16) just before counting pulses. (After a certain time has passed, the number of input pulses is decreased from this value.) Interrupt control register 2 (address 3F16) Timer 4 interrupt: Disabled Interrupt request register 2 (address 3D16) Timer 4 interrupt request ( “1” of this bit when reading the count value indicates the 256 or more pulses input in the condition of Timer 4 = 255) |
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