HD6413308 Hitachi Semiconductor, HD6413308 Datasheet - Page 78

• Manufacturer Part Number: HD6413308
• Description: Hitachi Single-Chip MicroComputer
• Manufacturer: Hitachi Semiconductor

4.2 Interrupts
There are nine input pins for external interrupts (NMI, IRQ
interrupts originating in the 16-bit free-running timer (FRT), 8-bit timers (TMR0 and TMR1), serial
communication interface (SCI), and A/D converter. The features of these interrupts are:
• All internal and external interrupts except NMI can be masked by the I bit in the CCR.
• IRQ
• Interrupts are individually vectored. The software interrupt-handling routine does not have to
Table 4-2 lists all the interrupts in their order of priority and gives their vector numbers and the
addresses of their entries in the vector table.
The type of sensing can be selected for each interrupt individually. NMI is edge-sensed, and
either the rising or falling edge can be selected.
determine what type of interrupt has occurred.
0
to IRQ
7
can be edge-sensed or level-sensed. (The falling edge or Low level is active.)
63
0
to IRQ
7
). There are also 19 internal