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Motor de Búsqueda de Datasheet de Componentes Electrónicos |
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Motor de Búsqueda de Datasheet de Componentes Electrónicos |
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H8/3003 Datasheet(PDF) 117 Page - Renesas Technology Corp |
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H8/3003 Datasheet(HTML) 117 Page - Renesas Technology Corp |
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117 / 715 page  5.5.2 Instructions that Inhibit Interrupts The LDC, ANDC, ORC, and XORC instructions inhibit interrupts. When an interrupt occurs, after determining the interrupt priority, the interrupt controller requests a CPU interrupt. If the CPU is currently executing one of these interrupt-inhibiting instructions, however, when the instruction is completed the CPU always continues by executing the next instruction. 5.5.3 Interrupts during EEPMOV Instruction Execution The EEPMOV.B and EEPMOV.W instructions differ in their reaction to interrupt requests. When the EEPMOV.B instruction is executing a transfer, no interrupts are accepted until the transfer is completed, not even NMI. When the EEPMOV.W instruction is executing a transfer, interrupt requests other than NMI are not accepted until the transfer is completed. If NMI is requested, NMI exception handling starts at a transfer cycle boundary. The PC value saved on the stack is the address of the next instruction. Programs should be coded as follows to allow for NMI interrupts during EEPMOV.W execution: L1: EEPMOV.W MOV.W R4,R4 BNE L1 99 |
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