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H8/3021 Datasheet(PDF) 512 Page - Renesas Technology Corp |
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H8/3021 Datasheet(HTML) 512 Page - Renesas Technology Corp |
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512 / 712 page  15. ROM Rev.2.00 Mar. 22, 2007 Page 488 of 684 REJ09B0352-0200 15.9 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. After the RAMER setting has been made, accesses cannot be made from the flash memory area or the RAM area overlapping flash memory. Emulation can be performed in user mode and user program mode. Figure 15.14 shows an example of emulation of real-time flash memory programming. Start of emulation program End of emulation program Tuning OK? Yes No Set RAMER Write tuning data to overlap RAM Execute application program Clear RAMER Write to flash memory emulation block Figure 15.14 Flowchart for Flash Memory Emulation in RAM |
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