h8s-2111b Renesas Electronics Corporation., h8s-2111b Datasheet - Page 101

• Manufacturer Part Number: h8s-2111b
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family / H8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

5.1
• Two interrupt control modes
• Priorities settable with ICR
• Independent vector addresses
• Thirty-one external interrupts
Any of two interrupt control modes can be set by means of the INTM1 and INTM0 bits in the
system control register (SYSCR).
An interrupt control register (ICR) is provided for setting interrupt priorities. Three priority
levels can be set for each module for all interrupts except NMI and address break.
All interrupt sources are assigned independent vector addresses, making it unnecessary for the
source to be identified in the interrupt handling routine.
NMI is the highest-priority interrupt, and is accepted at all times. Rising edge or falling edge
detection can be selected for NMI. Falling-edge, rising-edge, or both-edge detection, or level
sensing, can be selected for IRQ7 to IRQ0. The IRQ6 interrupt is shared by the interrupt from
the IRQ6 pin and eight external interrupt inputs (KIN7 to KIN0), and the IRQ7 interrupt is
shared by the interrupt from the IRQ7 pin and sixteen external interrupt inputs (KIN15 to
KIN8 and WUE7 to WUE0). KIN15 to KIN0 and WUE7 to WUE0 can be masked
individually by the user program.
Features
Section 5 Interrupt Controller
Rev. 1.00, 05/04, page 67 of 544