HD6412320 RENESAS [Renesas Technology Corp], HD6412320 Datasheet - Page 141
HD6412320
Manufacturer Part Number
HD6412320
Description
Renesas 16-Bit Single-Chip Microcomputer H8S Family H8S-2300 Series
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6412320.pdf
(1302 pages)
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5.1
5.1.1
The chip controls interrupts by means of an interrupt controller. The interrupt controller has the
following features. This chapter assumes the maximum number of interrupt sources available in
these series—nine external interrupts and 52 internal interrupts.
• Two interrupt control modes
• Priorities settable with IPRs
• Independent vector addresses
• Nine external interrupt pins
• DTC and DMAC * control
Note: * The DMAC is not supported in the H8S/2321.
⎯ Either of two interrupt control modes can be set by means of the INTM1 and INTM0 bits
⎯ Interrupt priority registers (IPRs) are provided for setting interrupt priorities. Eight priority
⎯ NMI is assigned the highest priority level of 8, and can be accepted at all times
⎯ All interrupt sources are assigned independent vector addresses, making it unnecessary for
⎯ NMI is the highest-priority interrupt, and is accepted at all times. Rising edge or falling
⎯ Falling edge, rising edge, or both edge detection, or level sensing, can be selected for IRQ7
⎯ DTC and DMAC * activation is controlled by means of interrupts
in the system control register (SYSCR)
levels can be set for each module for all interrupts except NMI
the source to be identified in the interrupt handling routine
edge can be selected for NMI
to IRQ0
Overview
Features
Section 5 Interrupt Controller
Rev.6.00 Sep. 27, 2007 Page 111 of 1268
Section 5 Interrupt Controller
REJ09B0220-0600
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