SH7125_08 Datasheet, PDF (601/774 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH™ RISC engine Family

Section 17 Flash Memory
17.2.6 Programming/Erasing Interface
Programming/erasing is executed by downloading the on-chip program to the on-chip RAM and
specifying the program address/data and erase block by using the interface registers/parameters.
The procedure program is made by the user in user program mode. The overview of the procedure
is as follows. For details, see section 17.5.2, User Program Mode (Only in On-Chip 128-Kbyte
and 64-Kbyte ROM Version).
Start user procedure
program for
programming/erasing.
Select on-chip program
to be downloaded and
set download destination
Download on-chip
program by setting VBR,
FKEY, and SCO bits.
Initialization execution
(on-chip program execution)
Programming (in 128-byte
units) or erasing (in
one-block units)
(on-chip program execution)
No
Programming/
erasing
completed?
Yes
End user procedure
program
Figure 17.5 Overview of User Procedure Program
(1) Selection of On-Chip Program to be Downloaded and Setting of Download Destination
This LSI has programming/erasing programs and they can be downloaded to the on-chip
RAM. The on-chip program to be downloaded is selected by setting the corresponding bits in
the programming/erasing interface registers. The download destination can be specified by
FTDAR.
Rev. 4.00 Jul. 25, 2008 Page 581 of 750
REJ09B0243-0400