SN8F2250B Series
USB 2.0 Full-Speed 8-Bit Micro-Controller
6.3 INTRQ INTERRUPT REQUEST REGISTER
INTRQ is the interrupt request flag register. The register includes all interrupt request indication flags. Each one of the
interrupt requests occurs; the bit of the INTRQ register would be set “1”. The INTRQ value needs to be clear by
programming after detecting the flag. In the interrupt vector of program, users know the any interrupt requests
occurring by the register and do the routine corresponding of the interrupt request.
0C6H
INTRQ1
Read/Write
After reset
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
TC1IRQ
R/W
Bit 0
TC0IRQ
R/W
0
0
Bit 0
TC0IRQ: TC0 timer interrupt request flag.
0 = None TC0 interrupt request.
1 = T0 interrupt request.
Bit 1
TC1IRQ: TC1 timer interrupt request flag.
0 = None TC1 interrupt request.
1 = T0 interrupt request.
0C8H
INTRQ
Read/Write
After reset
Bit 7
SOFIRQ
RW
Bit 6
USBIRQ
R/W
Bit 5
T1IRQ
R/W
0
Bit 4
T0IRQ
R/W
0
Bit 3
SIOIRQ
R/W
Bit 2
WAKEIRQ
R/W
Bit 1
P01IRQ
R/W
Bit 0
P00IRQ
R/W
0
0
0
0
0
0
Bit 0
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
P00IRQ: External P0.0 interrupt (INT0) request flag.
0 = None INT0 interrupt request.
1 = INT0 interrupt request.
P01IRQ: External P0.1 interrupt (INT1) request flag.
0 = None INT0 interrupt request.
1 = INT0 interrupt request.
WAKEIRQ: I/O PORT0 & PORT1 WAKEUP interrupt request flag.
0 = None WAKEUP interrupt request.
1 = WAKEUP interrupt request.
SIOIRQ: SIO interrupt request flag.
0 = None SIO interrupt request.
1 = SIO interrupt request.
T0IRQ: T0 timer interrupt request flag.
0 = None T0 interrupt request.
1 = T0 interrupt request.
T1IRQ: T1 timer interrupt request flag.
0 = None T1 interrupt request.
1 = T1 interrupt request.
USBIRQ: USB interrupt request flag.
0 = None USB interrupt request.
1 = USB interrupt request.
SOFIRQ: USB SOF interrupt request flag. Control this SOF interrupt with the USTATUS register.
0 = None USB SOF interrupt request.
1 = USB SOF interrupt request.
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