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UPD75112 Datasheet(PDF) 23 Page - NEC |
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UPD75112 Datasheet(HTML) 23 Page - NEC |
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23 / 56 page  23 µPD75112(A), 75116(A) 6. Interrupt Functions There are seven types of interrupt sources for the µPD75116(A) to allow multi-interruption with priority. The µPD75116(A) is also provided with two types of edge detection testable inputs. The µPD75116 interrupt control circuit has the follow- ing functions; • Hardware controlled vector interrupt function which enables to control by the interrupt enable flag (IE ×××) and the interrupt master enable flag (IME) whether an interrupt should be enabled. • Interrupt start address can be set freely. • Multiple interrupt function which enables to specify priority by the interrupt priority select register (IPS). • Interrupt request flag (IRQ×××) test function (inter- rupt generation can be checked by the software). • Standby mode release (the interrupt to be released can be selected by the interrupt enable flag). |
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