Flash Memory Emulation In Ram; 19.20.1 Emulation In Ram - Renesas H8S Series Hardware Manual

19.20

Flash Memory Emulation in RAM

19.20.1 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 can 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 19-51 shows an example of emulation of real-time flash memory
programming.
No
Write to flash memory emulation
Figure 19-51 Flowchart for Flash Memory Emulation in RAM
Start of emulation program
Set RAMER
Write tuning data to overlap
RAM
Execute application program
Tuning OK?
Yes
Clear RAMER
block
End of emulation program
Rev.6.00 Oct.28.2004 page 645 of 1016
REJ09B0138-0600H