HD6417660 RENESAS [Renesas Technology Corp], HD6417660 Datasheet - Page 237

• Manufacturer Part Number: HD6417660
• Description: Renesas 32-Bit RISC Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

The interrupt controller (INTC) ascertains the priority of interrupt sources and controls interrupt
requests to the CPU. The INTC registers set the order of priority of each interrupt, allowing the
user to process interrupt requests according to the user-set priority.
8.1
• 16 levels of interrupt priority can be set
• NMI noise canceler function
• IRQ interrupts can be set
• Interrupt request signal can be output (IRQOUT pin)
• Interrupts can be enabled or disabled
By setting the interrupt priority registers, the priorities of on-chip peripheral module and IRQ
interrupts can be selected from 16 levels for individual request sources.
An NMI input-level bit indicates the NMI pin state. By reading this bit in the interrupt
exception service routine, the pin state can be checked, enabling it to be used as a noise
canceler.
Detection of low level, high level, rising edge, or falling edge
Bus mastership can be required by signaling the external bus master that the external interrupt
and on-chip peripheral module interrupt requests have been generated
Interrupts can be enabled or disabled individually for each interrupt source with the interrupt
mask registers and interrupt mask clear registers.
Features
Section 8 Interrupt Controller (INTC)
Rev. 1.00, 02/04, page 199 of 804