4500/720 Series 720 Family Models 4513, 4514 Group User's Manual

APPLICATION
2.2 Interrupts
2-12
4513/4514 Group User’s Manual
(4) Timer 2 interrupt
The interrupt request occurs by the timer 2 underflow.
■ Timer 2 interrupt processing
● When the interrupt is used
The interrupt occurrence is enabled when the bit 3 of the interrupt control register V1 and the
interrupt enable flag INTE are set to “1.” When the timer 2 interrupt occurs, the interrupt processing
is executed from address 6 in page 1.
● When the interrupt is not used
The interrupt is disabled and the SNZT2 instruction is valid when the bit 3 of register V1 is set
to “0.”
(5) Timer 3 interrupt
The interrupt request occurs by the timer 3 underflow.
■ Timer 3 interrupt processing
● When the interrupt is used
The interrupt occurrence is enabled when the bit 0 of the interrupt control register V2 and the
interrupt enable flag INTE are set to “1.” When the timer 3 interrupt occurs, the interrupt processing
is executed from address 8 in page 1.
● When the interrupt is not used
The interrupt is disabled and the SNZT3 instruction is valid when the bit 0 of register V2 is set
to “0.”
(6) Timer 4 interrupt
The interrupt request occurs by the timer 4 underflow.
■ Timer 4 interrupt processing
● When the interrupt is used
The interrupt occurrence is enabled when the bit 1 of the interrupt control register V2 and the
interrupt enable flag INTE are set to “1.” When the timer 4 interrupt occurs, the interrupt processing
is executed from address A in page 1.
● When the interrupt is not used
The interrupt is disabled and the SNZT4 instruction is valid when the bit 1 of register V2 is set
to “0.”