Renesas 7700 FAMILY User Manual page 60

Table 4.2.2 lists occurrence factors of internal interrupt request, which occur due to internal operation.
Table 4.2.2 Occurrence factors of internal interrupt request
Interrupt
Zero division Occurs when "0" is specified as the divisor for the DIV instruction (Division instruction).
interrupt (Refer to "7751 Series Software Manual.")
BRK instruction Occurs when the BRK instruction is executed.
interrupt (Refer to "7751 Series Software Manual.")
Watchdog timer Occurs when the most significant bit of the watchdog timer becomes "0."
interrupt (Refer to "Chapter 9. WATCHDOG TIMER.")
Timer Ai interrupt Differs according to the timer Ai's operating modes.
(i = 0 to 4) (Refer to "Chapter 5. TIMER A.")
Timer Bi interrupt Differs according to the timer Bi's operating modes.
(i = 0 to 2) (Refer to "Chapter 6. TIMER B.")
UARTi receive Occurs at serial data reception. (Refer to "Chapter 7. SERIAL I/O.")
interrupt (i = 0, 1)
UARTi transmit Occurs at serial data transmission. (Refer to "Chapter 7. SERIAL I/O.")
interrupt (i = 0, 1)
A-D conversion Occurs when A-D conversion is completed. (Refer to "Chapter 8. A-D CONVERTER.")
interrupt
Interrupt request occurrence factors
7751 Group User's Manual
INTERRUPTS
4.2 Interrupt sources
4–5