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HD64F2149YV Datasheet(PDF) 149 Page - Renesas Technology Corp |
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HD64F2149YV Datasheet(HTML) 149 Page - 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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