HD6413008F RENESAS [Renesas Technology Corp], HD6413008F Datasheet - Page 131

• Manufacturer Part Number: HD6413008F
• Description: Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series
• Manufacturer: RENESAS [Renesas Technology Corp]

5.3
The interrupt sources include external interrupts (NMI, IRQ
5.3.1
There are seven external interrupts: NMI, and IRQ
IRQ
NMI: NMI is the highest-priority interrupt and is always accepted, regardless of the states of the
I and UI bits in CCR. The NMIEG bit in SYSCR selects whether an interrupt is requested by the
rising or falling edge of the input at the NMI pin. NMI interrupt exception handling has vector
number 7.
IRQ
The IRQ
• ISCR settings can select whether an interrupt is requested by the low level of the input at pins
• IER settings can enable or disable the IRQ
• The status of IRQ
Figure 5.2 shows a block diagram of interrupts IRQ
IRQn
Note: n = 5 to 0
IRQ
assigned by four bits in IPRA (IPRA7 to IPRA4).
to 0 by software.
0
5
can be used to exit software standby mode.
to IRQ
5
input
5
to IRQ
Interrupt Sources
External Interrupts
to IRQ
0
Interrupts: These interrupts are requested by input signals at pins IRQ
0
, or by the falling edge.
0
interrupts have the following features.
Figure 5.2 Block Diagram of Interrupts IRQ
5
to IRQ
0
sense circuit
interrupt requests is indicated in ISR. The ISR flags can be cleared
Edge/level
IRQnSC
Clear signal
5
to IRQ
5
5
to IRQ
to IRQ
0
S
R
interrupts. Interrupt priority levels can be
IRQnF
Rev.4.00 Aug. 20, 2007 Page 87 of 638
0
. Of these, NMI, IRQ
0
5
.
to IRQ
Q
IRQnE
0
) and 27 internal interrupts.
5
to IRQ
5. Interrupt Controller
0
REJ09B0395-0400
2
, IRQ
IRQn interrupt
request
5
1
to IRQ
, and
0
.