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PIC16F1825T-ESS Datasheet(PDF) 85 Page - Microchip Technology |
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PIC16F1825T-ESS Datasheet(HTML) 85 Page - Microchip Technology |
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85 / 448 page  2010-2012 Microchip Technology Inc. DS41440C-page 85 PIC16(L)F1825/1829 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. FIGURE 8-1: INTERRUPT LOGIC D CK R Q D CK R Q RBx IOCBNx IOCBPx Q2 D CK S Q Q4Q1 data bus = 0 or 1 write IOCBFx IOCIE to data bus IOCBFx edge detect IOC interrupt to CPU core from all other IOCBFx individual pin detectors Q1 Q2 Q3 Q4 Q4Q1 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q4 Q4Q1 Q4Q1 Q4Q1 |
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