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ST7MC1K2-Auto 数据表(PDF) 63 Page - STMicroelectronics |
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ST7MC1K2-Auto 数据表(HTML) 63 Page - STMicroelectronics |
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63 / 371 page  Obsolete Product(s) - Obsolete Product(s) ST7MC1K2-Auto, ST7MC1K6-Auto, ST7MC2S4-Auto, ST7MC2S6-Auto Interrupts 63/371 7.4 Concurrent and nested management Figure 18 and Figure 19 show two different interrupt management modes. The first is called concurrent mode and does not allow an interrupt to be interrupted, unlike the nested mode in Figure 19. The interrupt hardware priority is given in this order from the lowest to the highest: MAIN, IT4, IT3, IT2, IT1, IT0, MCES. The software priority is given for each interrupt. Warning: A stack overflow may occur without notifying the software of the failure. Figure 18. Concurrent interrupt management Figure 19. Nested interrupt management MAIN IT4 IT2 IT1 MCES IT1 MAIN IT0 I1 Software 3 3 3 3 3 3/0 3 11 11 11 11 11 11/10 11 RIM IT3 I0 10 priority level MAIN IT2 MCES MAIN IT0 3 2 1 3 3 3/0 3 11 00 01 11 11 11 RIM IT1 IT4 IT4 IT1 IT2 IT3 I1 I0 11/10 10 Software priority level Obsolete Product(s) - Obsolete Product(s) |
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