Renesas SH7781 - Manual (Page 302)

10. Interrupt Controller (INTC)
Rev.1.00 Jan. 10, 2008 Page 272 of 1658
REJ09B0261-0100
10.2 Input/Output Pins
Table 10.2 shows the pin configuration.
Table 10.2 INTC Pin Configuration
Pin Name Function I/O Description
NMI Nonmaskable
interrupt
input pin
Input Nonmaskable interrupt request signal input
IRQ/
IRL7 to
IRQ/
IRL0
External
interrupt
input pins Input Interrupt request signal input of IRQ7 to IRQ0 or
IRL[7:4]
and
IRL[3:0]
The IRQ/
IRL7 pin is multiplexed with FD7 (FLCTL I/O),
MODE3 (mode control input), and port L1 (GPIO I/O) pin,
the IRQ/
IRL6 pin is multiplexed with FD6 (FLCTL I/O),
MODE2 (mode control input), and port L2 (GPIO I/O) pin,
the IRQ/
IRL5 pin is multiplexed with FD5 (FLCTL I/O),
MODE1 (mode control input), and port L3 (GPIO I/O) pin,
and the IRQ/
IRL4 pin is multiplexed with FD4 (FLCTL I/O),
MODE3 (mode control input), and port L4 (GPIO I/O) pin.
IRQOUT Interrupt
request
output pin
Output Informs an external device of the generation of an interrupt
request.
The
IRQOUT pin is multiplexed with MRESETOUT (reset,
watchdog timer (WDT) output pin).
IRQOUT outputs the low level even if the interrupt request is
not accepted by the CPU because of the priority of a
generated interrupt request being lower than SR.IMASK.
However,
IRQOUT is not asserted in the following cases:
(1) IRL interrupt
• The IRL interrupt is masked by INTMASK1, or
• The
IRQ interrupt is masked by INTMASK2.
(2)
IRQ interrupt
• The interrupt is masked by INTMASK1, or
• The priority of the IRQ interrupt is set to H'0 by INTPRI
(3) On-chip module interrupt
• The on-chip module interrupt is masked by INT2MSKR,
or
• The priority is set to H'00 or H'01 by INT2PRI0 to
INT2PRI9.