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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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ST7MC1K2-Auto 데이터시트(PDF) 65 Page - STMicroelectronics |
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ST7MC1K2-Auto 데이터시트(HTML) 65 Page - STMicroelectronics |
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65 / 371 page  Obsolete Product(s) - Obsolete Product(s) ST7MC1K2-Auto, ST7MC1K6-Auto, ST7MC2S4-Auto, ST7MC2S6-Auto Interrupts 65/371 7.5.2 Interrupt software priority registers (ISPRX) These four registers contain the interrupt software priority of each interrupt vector. ● Each interrupt vector (except reset and TRAP) has corresponding bits in those registers where its own software priority is stored. This correspondence is shown in Table 18. ● Each I1_x and I0_x bit value in the ISPRx registers has the same meaning as the I1 and I0 bits in the CC register. ● Level 0 can not be written (I1_x = 1, I0_x = 0). In this case, the previously stored value is kept. (example: previous = CFh, write = 64h, result = 44h) The reset, TRAP and MCES vectors have no software priorities. When one is serviced, the I1 and I0 bits of the CC register are both set. ISPR0 Reset value: 1111 1111 (FFh) 7 654 32 10 I1_3 I0_3 I1_2 I0_2 I1_1 I0_1 I1_0 I0_0 R/W R/W R/W R/W R/W R/W R/W R/W ISPR1 Reset value: 1111 1111 (FFh) 7 654 32 10 I1_7 I0_7 I1_6 I0_6 I1_5 I0_5 I1_4 I0_4 R/W R/W R/W R/W R/W R/W R/W R/W ISPR2 Reset value: 1111 1111 (FFh) 7 654 32 10 I1_11 I0_11 I1_10 I0_10 I1_9 I0_9 I1_8 I0_8 R/W R/W R/W R/W R/W R/W R/W R/W ISPR3 Reset value: 1111 1111 (FFh) 7 654 32 10 1 1 1 1 I1_13 I0_13 I1_12 I0_12 RO RO RO RO R/W R/W R/W R/W Table 18. ISPRx interrupt vector correspondence Vector address ISPRx bits FFFBh-FFFAh I1_0 and I0_0 bits(1) 1. Bits in the ISPRx registers which correspond to the MCES can be read and written but they are not significant in the interrupt process management. FFF9h-FFF8h I1_1 and I0_1 bits FFE1h-FFE0h I1_13 and I0_13 bits Obsolete Product(s) - Obsolete Product(s) |
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