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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ST72561J4-Auto датащи(PDF) 134 Page - STMicroelectronics |
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ST72561J4-Auto датащи(HTML) 134 Page - STMicroelectronics |
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134 / 324 page  8-bit timer (TIM8) ST72561-Auto 134/324 Doc ID 12370 Rev 8 Figure 67. Output compare timing diagram, fTIMER =fCPU/4 13.3.5 One pulse mode One Pulse mode enables the generation of a pulse when an external event occurs. This mode is selected via the OPM bit in the CR2 register. The one pulse mode uses the Input Capture1 function and the Output Compare1 function. Procedure To use one pulse mode: 1. Load the OC1R register with the value corresponding to the length of the pulse (see the formula in the opposite column). 2. Select the following in the CR1 register: – Using the OLVL1 bit, select the level to be applied to the OCMP1 pin after the pulse. – Using the OLVL2 bit, select the level to be applied to the OCMP1 pin during the pulse. – Select the edge of the active transition on the ICAP1 pin with the IEDG1 bit (the ICAP1 pin must be configured as floating input). 3. Select the following in the CR2 register: – Set the OC1E bit, the OCMP1 pin is then dedicated to the Output Compare 1 function. – Set the OPM bit. – Select the timer clock CC[1:0] (see Table 55). fCPU CLOCK TIMER CLOCK COUNTER REGISTER OUTPUT COMPARE REGISTER i (OCRi) COMPARE REGISTER i LATCH D3 D0 D1 D2 D3 D4 CF OCMPi PIN (OLVLi =1) OUTPUT COMPARE FLAG i (OCFi) |
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