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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TMP93CS32F датащи(PDF) 79 Page - Toshiba Semiconductor |
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TMP93CS32F датащи(HTML) 79 Page - Toshiba Semiconductor |
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79 / 180 page  TMP93CS32 2004-02-10 93CS32-77 (1) 8-bit timer mode Four interval timers 0, 1, 2, and 3, can be used independently as 8-bit interval timer. 1. Generating interrupts in a fixed cycle (in case of timer 3) To generate timer 3 interrupt at constant intervals using timer 3 (INTT3), first stop timer 3 then set the operation mode, input clock, and a cycle to T32MOD and TREG3 register, respectively. Then, enable interrupt INTT3 and start the counting of timer 3. Example: To generate timer 3 interrupt every 10 µs at fc = 20 MHz, set each register in the following manner. * Clock Condition Clock gear: 1 (fc) Prescaler clock: fFPH MSB LSB 7 6 5 4 3 2 1 0 TRUN ← − X − − 0 − − − Stop timer 3, and clear it to “0”. T32MOD ← 0 0 X X 0 1 − − Set the 8-bit timer mode, and select φT1 (0.4 µs at fc = 20 MHz) as the input clock. TREG3 ← 0 0 0 1 1 0 0 1 Set the timer register 10 µs ÷ φT1 = 25 = 19H INTET32 ← 1 1 0 1 − − − − Enable INTT3, and set it to “Level 5”. TRUN ← 1 X − − 1 − − − Start timer 3 counting. X: Don’t care, −: No change Use the Table 3.7.1 for selecting the input clock. Note: The input clock of timer 2 and timer 3 are different from as follows. Timer 2: φT1, φT4, φT16 Timer 3: Match output of timer 2, φT1, φT16, and φT256 |
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