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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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ATTINY817-MFR. 데이터시트(PDF) 97 Page - Microchip Technology |
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ATTINY817-MFR. 데이터시트(HTML) 97 Page - Microchip Technology |
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97 / 492 page  14.3.2.3 Event Generators Each Event channel can receive the Events from several Event generators. For details on Event generation, refer to the documentation of the corresponding peripheral. For each Event channel, there are several possible Event generators, only one of which can be selected at a time. The Event generator trigger is selected for each channel by writing to the respective channel registers (EVSYS.ASYNCCHn, EVSYS.SYNCCHn). By default, the channels are not connected to any Event generator. 14.3.2.4 Software Event In a Software Event, the CPU will “strobe” an Event channel by inverting the current value for one system clock cycle. A Software Event is triggered on a channel by writing a '1' to the respective Strobe bit in the appropriate Channel Strobe register: • Software Events on asynchronous channel l are initiated by writing a '1' to the ASYNCSTROBE[l] bit in the Asynchronous Channel Strobe register (EVSYS.ASYNCSTROBE). • Software Events on synchronous channel k are initiated by writing a '1' to the SYNCSTROBE[k] bit in the Synchronous Channel Strobe register (EVSYS.SYNCSTROBE). Software Events are no different to those produced by Event generator peripherals with respect to Event users: when the bit is written to '1', an Event will be generated on the respective channel, and received and processed by the Event User. 14.3.3 Interrupts Not applicable. 14.3.4 Sleep Mode Operation When configured, the Event System will work in all sleep modes. One exception are software Events which require a system clock. 14.3.5 Debug Operation This peripheral is unaffected by entering debug mode. Related Links UPDI - Unified Program and Debug Interface 14.3.6 Synchronization Asynchronous Events are synchronized and handled by the compatible Event users. Event User peripherals not compatible with asynchronous Events can only be configured to listen to synchronous Event channels. 14.3.7 Configuration Change Protection Not applicable. Related Links Sequence for Write Operation to Configuration Change Protected I/O Registers ATtiny417/817 © 2017 Microchip Technology Inc. Datasheet Complete DS40001901B-page 97 |
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