H8SSLASH2218 datasheet(139/750 Pages) RENESAS

139 / 750 page

Section 5 Interrupt Controller

Rev.6.00 Jun. 03, 2008 Page 91 of 698

REJ09B0074-0600

Section 5 Interrupt Controller

5.1

Features

• Two interrupt control modes

⎯ Any of two interrupt control modes can be set by means of the INTM1 and INTM0 bits in

the system control register (SYSCR).

• Priorities settable with IPR

⎯ An interrupt priority register (IPR) is provided for setting interrupt priorities. Eight priority

levels can be set for each module for all interrupts except NMI. NMI is assigned the highest

priority level of 8, and can be accepted at all times.

• Independent vector addresses

⎯ All interrupt sources are assigned independent vector addresses, making it unnecessary for

the source to be identified in the interrupt handling routine.

• Seven external interrupts (NMI, IRQ7, and IRQ4 to IRQ0)

⎯ NMI is the highest-priority interrupt, and is accepted at all times. Rising edge or falling

edge can be selected for NMI. Falling edge, rising edge, or both edge detection, or level

sensing, can be selected for

IRQ7 and IRQ4 to IRQ0. IRQ6 is an interrupt only for the on-

chip USB.

IRQ5 is an interrupt only for the on-chip RTC.

• DMAC control

⎯ DMAC activation is performed by means of interrupts.

H8S/2218 Scheda tecnica(PDF) 139 Page - Renesas Technology Corp