HD6473032F Datasheet, PDF (104/572 Pages) Hitachi Semiconductor – Hitachi Microcomputer

Figure 5-3 shows the timing of the setting of the interrupt flags (IRQnF).
ø
IRQn
input pin
IRQnF
Figure 5-3 Timing of Setting of IRQnF
Interrupts IRQ₀ to IRQ₄ have vector numbers 12 to 16. These interrupts are detected regardless of
whether the corresponding pin is set for input or output. When using a pin for external interrupt
input, clear its DDR bit to 0 and do not use the pin for chip select output, refresh output, or SCI
input or output.
5.3.2 Internal Interrupts
Twenty-one internal interrupts are requested from the on-chip supporting modules.
• Each on-chip supporting module has status flags for indicating interrupt status, and enable
bits for enabling or disabling interrupts.
• Interrupt priority levels can be assigned in IPRA and IPRB.
5.3.3 Interrupt Vector Table
Table 5-3 lists the interrupt sources, their vector addresses, and their default priority order. In the
default priority order, smaller vector numbers have higher priority. The priority of interrupts other
than NMI can be changed in IPRA and IPRB. The priority order after a reset is the default order
shown in table 5-3.
89