HD64F38024HV Datasheet, PDF (99/684 Pages) Renesas Technology Corp – Hardware Manual Renesas 8-Bit Single-Chip Microcomputer H8 Family/H8/300L Super Low Power Series

3.3 Interrupts
Section 3 Exception Handling
3.3.1 Overview
The interrupt sources include 13 external interrupts (WKP₇ to WKP₀, IRQ₄, IRQ₃, IRQ₁, IRQ₀,
IRQAEC) and 9 internal interrupts from on-chip peripheral modules. Table 3.2 shows the interrupt
sources, their priorities, and their vector addresses. When more than one interrupt is requested, the
interrupt with the highest priority is processed.
The interrupts have the following features:
• Internal and external interrupts can be masked by the I bit in CCR. When the I bit is set to 1,
interrupt request flags can be set but the interrupts are not accepted.
• IRQ₄, IRQ₃, IRQ₁, IRQ₀, and WKP₇ to WKP₀ can be set to either rising edge sensing or falling
edge sensing, and IRQAEC can be set to either rising edge sensing, falling edge sensing, or
both edge sensing.
Rev. 8.00 Mar. 09, 2010 Page 77 of 658
REJ09B0042-0800