SN8F2270B Series
USB 2.0 Low-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.
0C8H
INTRQ
Read/Write
After reset
Bit 7
Bit 6
USBIRQ
R/W
Bit 5
TC0IRQ
R/W
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
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.
TC0IRQ: TC0 timer interrupt request flag.
0 = None TC0 interrupt request.
1 = TC0 interrupt request.
USBIRQ: USB interrupt request flag.
0 = None USB interrupt request.
1 = USB interrupt request.
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