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UPD17708 Datasheet(PDF) 137 Page - Renesas Technology Corp

Part # UPD17708
Description  MOS INTEGRATED CIRCUIT
PDF  358 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

UPD17708 Datasheet(HTML) 137 Page - Renesas Technology Corp

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µPD17704, 17705, 17707, 17708, 17709
12.3.3 Interrupt stack operation
Figure 12-8 shows the operation of the interrupt stack.
When nested interrupts exceeding four levels are accepted, since the contents saved first are discarded they
therefore must be saved by the program.
Figure 12-18. Operation of Interrupt Stack (1/2)
(a) Where interrupt nesting level is 4 or less
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Main routine
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RETI
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