SH7280 Datasheet, PDF (1465/1726 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine family

Section 26 Flash Memory
(4) Erasing and Programming Procedure in User Program Mode
By changing the on-chip RAM address of the download destination in FTDAR, the erasing
program and programming program can be downloaded to separate on-chip RAM areas.
Figure 26.15 shows an example of repetitively executing RAM emulation, erasing, and
programming.
1
Start procedure program
Set FTDAR to H'00
(Specify H'FFF81000 as
download destination)
Download erasing program
Initialize erasing program
Set FTDAR to H'01
(Specify H'FFF82000 as
download destination)
Erase relevant block
(execute erasing program)
Set FMPDR to H'FFF86000 to
program relevant block
(execute programming program)
Confirm operation
Download programming
program
Initialize programming
program
1
End?
No
Yes
End procedure program
Figure 26.15 Sample Procedure of Repeating RAM Emulation, Erasing, and Programming
(Overview)
Rev. 1.00 Jun. 26, 2008 Page 1435 of 1692
REJ09B0393-0100