HD6412240 RENESAS [Renesas Technology Corp], HD6412240 Datasheet - Page 141
HD6412240
Manufacturer Part Number
HD6412240
Description
Renesas 16-Bit Single-Chip Microcomputer H8S Family / H8S/2200 Series
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6412240.pdf
(818 pages)
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4.3
Interrupt exception handling can be requested by nine external sources (NMI, IRQ7 to IRQ0) and
34 internal sources in the on-chip supporting modules. Figure 4.4 classifies the interrupt sources
and the number of interrupts of each type.
The on-chip supporting modules that can request interrupts include the watchdog timer (WDT),
16-bit timer-pulse unit (TPU), 8-bit timer, serial communication interface (SCI), data transfer
controller (DTC), and A/D converter. Each interrupt source has a separate vector address.
NMI is the highest-priority interrupt. Interrupts are controlled by the interrupt controller. The
interrupt controller has two interrupt control modes and can assign interrupts other than NMI to
three priority/mask levels to enable multiplexed interrupt control.
For details of interrupts, see section 5, Interrupt Controller.
Notes:
Interrupts
Numbers in parentheses are the numbers of interrupt sources.
* When the watchdog timer is used as an interval timer, it generates
Figure 4.4 Interrupt Sources and Number of Interrupts
Interrupts
an interrupt request at each counter overflow.
External
interrupts
Internal
interrupts
NMI (1)
IRQ7 to IRQ0 (8)
WDT * (1)
TPU (13)
8-bit timer (6)
SCI (12)
DTC (1)
A/D converter (1)
Rev.3.00 Mar. 26, 2007 Page 99 of 772
Section 4 Exception Handling
REJ09B0355-0300
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