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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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HD6432351 데이터시트(PDF) 150 Page - Renesas Technology Corp |
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HD6432351 데이터시트(HTML) 150 Page - Renesas Technology Corp |
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150 / 1025 page  Section 5 Interrupt Controller Rev. 3.00 Sep 15, 2006 page 116 of 988 REJ09B0330-0300 Internal address bus Internal write signal φ TGIEA TGFA TGI0A interrupt signal TIER0 write cycle by CPU TGI0A exception handling TIER0 address Figure 5.8 Contention between Interrupt Generation and Disabling The above contention will not occur if an enable bit or interrupt source flag is cleared to 0 while the interrupt is masked. 5.5.2 Instructions That Disable Interrupts Instructions that disable interrupts are LDC, ANDC, ORC, and XORC. After any of these instructions is executed, all interrupts including NMI are disabled and the next instruction is always executed. When the I bit is set by one of these instructions, the new value becomes valid two states after execution of the instruction ends. 5.5.3 Times when Interrupts Are Disabled There are times when interrupt acceptance is disabled by the interrupt controller. The interrupt controller disables interrupt acceptance for a 3-state period after the CPU has updated the mask level with an LDC, ANDC, ORC, or XORC instruction. |
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