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ST72361AR4-Auto Datasheet(PDF) 96 Page - STMicroelectronics |
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ST72361AR4-Auto Datasheet(HTML) 96 Page - STMicroelectronics |
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96 / 279 page  PWM auto-reload timer (ART) ST72361xx-Auto 96/279 Doc ID 12468 Rev 3 Figure 45. Input capture timing diagram, fCOUNTER = fCPU / 4 11.2.9 External interrupt capability This mode allows the Input capture capabilities to be used as external interrupt sources. The interrupts are generated on the edge of the ARTICx signal. The edge sensitivity of the external interrupts is programmable (CSx bit of ARTICCSR register) and they are independently enabled through CIEx bits of the ARTICCSR register. After fetching the interrupt vector, the CFx flags can be read to identify the interrupt source. During HALT mode, the external interrupts can be used to wake up the micro (if the CIEx bit is set). In this case, the interrupt synchronization is done directly on the ARTICx pin edge (Figure 46). Figure 46. ART external interrupt in halt mode 04h COUNTER t fCOUNTER xxh 03h 04h ARTICx PIN CFx FLAG ICRx REGISTER INTERRUPT fCPU ICAP SAMPLED 05h 04h COUNTER t fCOUNTER xxh 03h 05h ARTICx PIN CFx FLAG ICRx REGISTER INTERRUPT fCPU ICAP SAMPLED 05h ARTICx PIN CFx FLAG t INTERRUPT |
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