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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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C167CS 데이터시트(PDF) 113 Page - Infineon Technologies AG |
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C167CS 데이터시트(HTML) 113 Page - Infineon Technologies AG |
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113 / 517 page  C167CS Derivatives Interrupt and Trap Functions User’s Manual 5-30 V2.0, 2000-07 External Interrupts During Sleep Mode During Sleep mode all peripheral clock signals are deactivated which also disables the standard edge detection logic for the fast external interrupts. However, transitions on these interrupt inputs must be recognized in order to initiate the wakeup. Therefore during Sleep mode a special edge detection logic for the fast external interrupts (EXzIN) is activated, which requires no clock signal (therefore also works in Sleep mode) and is equipped with an analog noise filter. This filter suppresses spikes (generated by noise) up to 10 ns. Input pulses with a duration of 100 ns minimum are recognized and generate an interrupt request. This filter delays the recognition of an external wakeup signal by approx. 100 ns, but the spike suppression ensures safe and robust operation of the sleep/wakeup mechanism in an active environment. Figure 5-6 Input Noise Filter Operation MCD04456 Input Signal Interrupt Request Rejected Recognized 10 ns 100 ns |
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