HD6473887 Datasheet, PDF (83/523 Pages) Renesas Technology Corp – Hitachi Single-Chip Microcomputer

3.3 Interrupts
3.3.1 Overview
The interrupt sources include 13 external interrupts (IRQ₄ to IRQ₀, WKP₇ to WKP₀) and 24
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 to IRQ₀ and WKP₇ to WKP₀ can be set to either rising edge sensing or falling edge
sensing.
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