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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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EM341 데이터시트(PDF) 119 Page - Silicon Laboratories |
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EM341 데이터시트(HTML) 119 Page - Silicon Laboratories |
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119 / 237 page  EM341 120 Rev 1.0 When a UEV occurs, the update flag (the INT_TIMUIF bit in the INT_TIMxFLAG register) is set (unless TIM_URS is 1) and the following registers are updated: The prescaler shadow register is reloaded with the buffer value (contents of the TIMx_PSC register). The auto-reload active register is updated with the buffer value (contents of the TIMx_ARR register). If the update source is a counter overflow, the auto-reload is updated before the counter is reloaded, so that the next period is the expected one. The counter is loaded with the new value. Figures 9.9, 9.10, and 9.11 show some examples of the counter behavior for different clock frequencies. Figure 9.9. Counter Timing Diagram, Internal Clock Divided by 1, TIMx_ARR = 0x6 Figure 9.10. Counter Timing Diagram, Update Event with TIM_ARBE = 1 (Counter Underflow) |
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