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HD64F2149YV Folha de dados(PDF) 149 Page - Renesas Technology Corp

Nome de Peças HD64F2149YV
Descrição Electrónicos  Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2100 Series
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Fabricante Electrônico  RENESAS [Renesas Technology Corp]
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HD64F2149YV Folha de dados(HTML) 149 Page - Renesas Technology Corp

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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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