7702 datasheet(67/217 Pages) RENESAS

67 / 217 page

7702/7703 Group User’s Manual

4–5

INTERRUPTS

Table 4.2.2 lists occurrence factors of internal interrupt request, which occur due to internal operation.

4.2 Interrupt sources

Table 4.2.2 Occurrence factors of internal interrupt request

Interrupt

Zero division

interrupt

BRK instruction

interrupt

Watchdog timer

interrupt

Timer Ai interrupt

(i = 0 to 4)

Timer Bi interrupt

(i = 0 to 2)

UARTi receive

interrupt (i = 0, 1)

UARTi transmit

interrupt (i = 0, 1)

A-D conversion

interrupt

Interrupt request occurrence factors

Occurs when “0” is specified as the divisor for the DIV instruction (Division instruction).

(Refer to “7700 Family Software Manual.”)

Occurs when the BRK instruction is executed.

(Refer to “7700 Family Software Manual.”)

Occurs when the most significant bit of the watchdog timer becomes “0.”

(Refer to “Chapter 9. WATCHDOG TIMER.”)

Differs according to the timer Ai’s operating modes.

(Refer to “Chapter 5. TIMER A.”)

Differs according to the timer Bi’s operating modes.

(Refer to “Chapter 6. TIMER B.”)

Occurs at serial data reception. (Refer to “Chapter 7. SERIAL I/O.”)

Occurs at serial data transmission. (Refer to “Chapter 7. SERIAL I/O.”)

Occurs when A-D conversion is completed. (Refer to “Chapter 8. A-D CONVERTER.”)

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