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H8S/2214 Scheda tecnica(PDF) 640 Page - Renesas Technology Corp

Il numero della parte H8S/2214
Spiegazioni elettronici  16-Bit Single-Chip Microcomputer H8S Family/H8S/2200 Series
PDF  936 Pages
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Produttore elettronici  RENESAS [Renesas Technology Corp]
Homepage  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

H8S/2214 Scheda tecnica(HTML) 640 Page - Renesas Technology Corp

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Section 15 ROM
Rev.4.00 Sep. 18, 2008 Page 580 of 872
REJ09B0189-0400
15.11
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 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 15.17 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 15.17 Flowchart for Flash Memory Emulation in RAM



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