HD6413003RVF RENESAS [Renesas Technology Corp], HD6413003RVF Datasheet - Page 105

• Manufacturer Part Number: HD6413003RVF
• Description: microcontroller (MCU)
• Manufacturer: RENESAS [Renesas Technology Corp]

5.3 Interrupt Sources
The interrupt sources include external interrupts (NMI, IRQ
5.3.1 External Interrupts
There are nine external interrupts: NMI, and IRQ
can be used to exit software standby mode.
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
•
•
•
Figure 5-2 shows a block diagram of interrupts IRQ
IRQn
Note: n = 7 to 0
ISCR settings can select whether an interrupt is requested by the low level of the input at pins
IRQ
IER settings can enable or disable the IRQ
assigned by four bits in IPRA (IPRA7 to IPRA4).
The status of IRQ
cleared to 0 by software.
0
to IRQ
0
0
input
to IRQ
to IRQ
7
Interrupts: These interrupts are requested by input signals at pins IRQ
7
7
, or by the falling edge.
interrupts have the following features.
Figure 5-2 Block Diagram of Interrupts IRQ
0
to IRQ
sense circuit
7
Edge/level
IRQnSC
interrupt requests is indicated in ISR. The ISR flags can be
Clear signal
0
87
to IRQ
0
to IRQ
0
to IRQ
S
R
7
interrupts. Interrupt priority levels can be
7
IRQnF
. Of these, NMI, IRQ
0
7
.
to IRQ
Q
IRQnE
7
0
) and 34 internal interrupts.
to IRQ
7
0
, IRQ
IRQn interrupt
request
1
0
, and IRQ
to IRQ
7
.
2