UPD754264 datasheet(28/69 Pages) RENESAS

tên linh kiện	UPD754264

Giải thích chi tiết về linh kiện	MOS INTEGRATED CIRCUIT

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µPD754264

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.

UPD754264 bảng dữ liệu(PDF) 28 Page - Renesas Technology Corp