h8s-2635 Renesas Electronics Corporation., h8s-2635 Datasheet - Page 174

• Manufacturer Part Number: h8s-2635
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 5 Interrupt Controller
5.3
Interrupt sources comprise external interrupts (NMI and IRQ5 to IRQ0) and internal interrupts (49
sources).
Note: The H8S/2635 Group is not equipped with a DTC, a PC brake controller, or an HCAN1.
5.3.1
There are seven external interrupts: NMI and IRQ5 to IRQ0. Of these, NMI and IRQ5 to IRQ0
can be used to restore the chip from software standby mode.
NMI Interrupt: NMI is the highest-priority interrupt, and is always accepted by the CPU
regardless of the interrupt control mode or the status of the CPU interrupt mask bits. The NMIEG
bit in SYSCR can be used to select whether an interrupt is requested at a rising edge or a falling
edge on the NMI pin.
The vector number for NMI interrupt exception handling is 7.
IRQ5 to IRQ0 Interrupts: Interrupts IRQ5 to IRQ0 are requested by an input signal at pins
to
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REJ09B0103-0600
I R Q 0
Using ISCR, it is possible to select whether an interrupt is generated by a low level, falling
edge, rising edge, or both edges, at pins
Enabling or disabling of interrupt requests IRQ5 to IRQ0 can be selected with IER.
The interrupt priority level can be set with IPR.
The status of interrupt requests IRQ5 to IRQ0 is indicated in ISR. ISR flags can be cleared to 0
by software.
The H8S/2635 Group has 45 sources of internal interrupt.
. Interrupts IRQ5 to IRQ0 have the following features:
Interrupt Sources
External Interrupts
I R Q 5
to
I R Q 0
.
I R Q 5