h8s-2635 Renesas Electronics Corporation., h8s-2635 Datasheet - Page 834

• Manufacturer Part Number: h8s-2635
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 21A ROM (H8S/2636 Group)
21A.11 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 21A-15 shows an example of emulation of real-time flash
memory programming.
Rev. 6.00 Feb 22, 2005 page 774 of 1484
REJ09B0103-0600
Figure 21A-15 Flowchart for Flash Memory Emulation in RAM
No
Write to flash memory emulation
Execute application program
Write tuning data to overlap
Start of emulation program
End of emulation program
Clear RAMER
Set RAMER
Tuning OK?
RAM
block
Yes