SH7050 Datasheet, PDF (574/841 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperH RISC engine Family/

Section 18 ROM (128 kB Version)
On-Chip RAM Area Divisions in Boot Mode: In boot mode, the RAM area is divided into an
area used by the boot program and an area to which the programming control program is
transferred via the SCI, as shown in figure 18.5. The boot program area cannot be used until the
execution state in boot mode switches to the programming control program transferred from the
host.
Boot program area
( 2 kbytes)
H'FFFFE800
H'FFFFEFFF
Programming
control program area
(4 kbytes)
H'FFFFFFFF
Figure 18.5 RAM Areas in Boot Mode
Note:
The boot program area cannot be used until a transition is made to the execution state for
the programming control program transferred to RAM. Note also that the boot program
remains in this area of the on-chip RAM even after control branches to the programming
control program.
Rev. 5.00 Jan 06, 2006 page 554 of 818
REJ09B0273-0500