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UPD754264 Datasheet(PDF) 28 Page - Renesas Technology Corp

Part # UPD754264
Description  MOS INTEGRATED CIRCUIT
PDF  69 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

UPD754264 Datasheet(HTML) 28 Page - Renesas Technology Corp

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µPD754264
26
Data Sheet U12487EJ1V2DS
8. INTERRUPT FUNCTION AND TEST FUNCTION
Figure 8-1 shows the interrupt control circuit. Each hardware device is mapped in the data memory space.
The interrupt control circuit of the
µPD754264 has the following functions.
(1) Interrupt function
• Vectored interrupt function for hardware control, enabling/disabling the interrupt acknowledgement by the
interrupt enable flag (IE
×××) and interrupt master enable flag (IME).
• Can set any interrupt start address.
• Multiple interrupts wherein the order of priority can be specified by the interrupt priority select register (IPS).
• Test function of interrupt request flag (IRQ
×××). An interrupt generated can be checked by software.
• Release the standby mode. A release interrupt can be selected by the interrupt enable flag.
(2) Test function
• Test request flag (IRQ2) generation can be checked by software.
• Release the standby mode. The test source to be released can be selected by the test enable flag.



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