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41594B 数据表(PDF) 77 Page - Microchip Technology |
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41594B 数据表(HTML) 77 Page - Microchip Technology |
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77 / 372 page  2011-2012 Microchip Technology Inc. Preliminary DS41594B-page 77 PIC12LF1840T48A 8.0 INTERRUPTS The interrupt feature allows certain events to preempt normal program flow. Firmware is used to determine the source of the interrupt and act accordingly. Some interrupts can be configured to wake the MCU from Sleep mode. This chapter contains the following information for Interrupts: • Operation • Interrupt Latency • Interrupts During Sleep •INT Pin • Automatic Context Saving Many peripherals produce interrupts. Refer to the corresponding chapters for details. A block diagram of the interrupt logic is shown in Figure 8-1 and Figure 8-2. FIGURE 8-1: INTERRUPT LOGIC TMR0IF TMR0IE INTF INTE IOCIF IOCIE GIE PEIE Wake-up (if in Sleep mode) Interrupt to CPU From Peripheral Interrupt Logic (Figure 8-2) |
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