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H8S2245 데이터시트(PDF) 145 Page - Renesas Technology Corp

부품명 H8S2245
상세설명  Renesas 16-Bit Single-Chip Microcomputer H8S Family / H8S/2200 Series
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제조업체  RENESAS [Renesas Technology Corp]
홈페이지  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

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Section 5 Interrupt Controller
Rev.3.00 Mar. 26, 2007 Page 103 of 772
REJ09B0355-0300
Section 5 Interrupt Controller
5.1
Overview
5.1.1
Features
The H8S/2245 Group controls interrupts by means of an interrupt controller. The interrupt
controller has the following features:
• Two interrupt control modes
 Either of two interrupt control modes can be set by means of the INTM1 and INTM0 bits
in the system control register (SYSCR).
• Priorities settable with ICR
 An interrupt control register (ICR) is provided for setting interrupt priorities. Three priority
levels can be set for each module for all interrupts except NMI.
• Independent vector addresses
 All interrupt sources are assigned independent vector addresses, making it unnecessary for
the source to be identified in the interrupt handling routine.
• Nine external interrupts
 NMI is the highest-priority interrupt, and is accepted at all times. Rising edge or falling
edge can be selected for NMI.
 Falling edge, rising edge, or both edge detection, or level sensing, can be selected for IRQ7
to IRQ0.
• DTC control
 DTC activation is performed by means of interrupts.



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