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ST7DALIF2 数据表(PDF) 167 Page - STMicroelectronics |
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ST7DALIF2 数据表(HTML) 167 Page - STMicroelectronics |
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167 / 171 page  ST7DALIF2 Important notes 167/171 The symptom does not occur when the interrupts are handled normally, i.e. when: ● The interrupt request is cleared (flag reset or interrupt mask) within its own interrupt routine ● The interrupt request is cleared (flag reset or interrupt mask) within any interrupt routine ● The interrupt request is cleared (flag reset or interrupt mask) in any part of the code while this interrupt is disabled If these conditions are not met, the symptom can be avoided by implementing the following sequence: Perform SIM and RIM operation before and after resetting an active interrupt request Ex: SIM reset flag or interrupt mask RIM 23.6 Using PB4 as external interrupt PB4 cannot be used as an external interrupt in Halt mode because the port pin PB4 is not active in this mode. 23.7 Timebase 2 interrupt in Slow mode Timebase 2 interrupt is not available in slow mode. |
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