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SH7080_09 Datasheet, PDF (1334/1622 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family
Section 23 Flash Memory
23.7 Flash Memory Emulation in RAM
To provide real-time emulation in RAM of data that is to be written to the flash memory, a part of
the RAM can be overlaid on an area of flash memory (user MAT) that has been specified by the
RAM emulation register (RAMER). After the RAMER setting is made, the RAM is accessible in
both the user MAT area and as the RAM area that has been overlaid on the user MAT area. Such
emulation is possible in user mode and user program mode.
Figure 23.17 shows an example of the emulation of realtime programming of the user MAT area.
Start of emulation program
Set RAMER
Write the data for tuning to
the overlapped RAM area
Execute application program
No
Tuning OK?
Yes
Cancel RAMER setting
Program the emulation block
in the user MAT
End of emulation program
Figure 23.17 Emulation of Flash Memory in RAM
Rev. 4.00 Dec. 15, 2009 Page 1274 of 1558
REJ09B0181-0400