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数据搜索系统，热门电子元器件搜索 |
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数据搜索系统，热门电子元器件搜索 |
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H8S/2218 数据表(PDF) 625 Page - Renesas Technology Corp |
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H8S/2218 数据表(HTML) 625 Page - Renesas Technology Corp |
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625 / 750 page  Section 17 Flash Memory (F-ZTAT Version) Rev.6.00 Jun. 03, 2008 Page 577 of 698 REJ09B0074-0600 17.7 Flash Memory Emulation in RAM Making a setting in the RAM emulation register (RAMER) enables part of RAM to be overlapped onto the flash memory area so that data to be written to flash memory can be emulated in RAM in real time. Emulation can be performed in user mode or user program mode. Figure 17.10 shows an example of emulation of real-time flash memory programming. 1. Set RAMER to overlap part of RAM onto the area for which real-time programming is required. 2. Emulation is performed using the overlapping RAM. 3. After the program data has been confirmed, the RAMS bit is cleared, thus releasing RAM overlap. 4. The data written in the overlapping RAM is written into the flash memory space (EB0). Start of emulation program Set RAMER Write tuning data to overlap RAM Execute application program Tuning OK? Clear RAMER Write to flash memory emulation block End of emulation program No Yes Figure 17.10 Flowchart for Flash Memory Emulation in RAM |
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