HD64F2149YV datasheet(149/1075 Pages) RENESAS

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HD64F2149YV データシート(PDF) 149 Page - Renesas Technology Corp

部品番号	HD64F2149YV

部品情報	Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2100 Series

PDF	1075 Pages

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メーカー	RENESAS [Renesas Technology Corp]

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149 / 1075 page

Section 5 Interrupt Controller

Rev. 3.00 Jan 18, 2006 page 121 of 1044

REJ09B0280-0300

5.4

Address Breaks

5.4.1

Features

With the H8S/2169 or H8S/2149, it is possible to identify the prefetch of a specific address by the

CPU and generate an address break interrupt, using the ABRKCR and BAR registers. When an

address break interrupt is generated, address break interrupt exception handling is executed.

This function can be used to detect the beginning of execution of a bug location in the program,

and branch to a correction routine.

5.4.2

Block Diagram

A block diagram of the address break function is shown in figure 5.5.

BAR

ABRKCR

Comparator

Match

signal

Control logic

Address break

interrupt request

Internal address

Prefetch signal

(internal signal)

Figure 5.5 Block Diagram of Address Break Function

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