M38203M4 Datasheet, PDF (102/344 Pages) Mitsubishi Electric Semiconductor – 8-BIT SINGLE-CHIP MICROCOMPUTER

APPLICATION
2.2 Interrupts
(1) Interrupt request generating conditions
Table 2.2.1 shows interrupt sources and interrupt request generating conditions.
The occurrence of an interrupt request causes the corresponding interrupt request bit to be set to “1.”
When the following conditions are satisfied in this state, the interrupt request is accepted.
For details, refer to “2.2.2 Control”.
ŒInterrupt disable flag = “0” (interrupts enabled)
Interrupt enable bit = “1” (interrupts enabled)
Table 2.2.1 Interrupt sources and interrupt request generating conditions
Interrupt sources
Interrupt request generating conditions
Reference
INT0
INT1
Serial I/O1 receive
Serial I/O1 transmit
Timer X
Timer Y
Timer 2
Timer 3
CNTR0
At detection of either rising or falling edge of INT0 input
(Active edge selectable)
At detection of either rising or falling edge of INT1 input
(Active edge selectable)
At completion of serial I/O1 data reception
At completion of serial I/O1 transmit shift or when transmit
buffer register is empty
At timer X underflow
At timer Y underflow
At timer 2 underflow
At timer 3 underflow
At detection of either rising or falling edge of CNTR0
2.2.4 INT interrupts
2.5 Serial I/O1
2.3 Timer X and timer Y
2.4 Timer 1, timer 2, and timer 3
CNTR1
Timer 1
INT2
INT3
input (Active edge selectable)
At detection of either rising or falling edge of CNTR1
input (Active edge selectable)
At timer 1 underflow
At detection of either rising or falling edge of INT2 input
(Active edge selectable)
At detection of either rising or falling edge of INT3 input
2.3 Timer X and timer Y
2.4 Timer 1, timer 2, and timer 3
2.2.4 INT interrupts
(Active edge selectable)
Key input
(Key-on wake up)
Serial I/O2
BRK instruction
At falling of conjunction of input level for port P2 (at
input mode)
At completion of serial I/O2 data transmission
or reception
At BRK instruction execution
2.2.5 Key input interrupt
2.6 Serial I/O2
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USER’S MANUAL
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