SH7055S Datasheet, PDF (881/1002 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family/SH7000 Series

Table 22.30 (4) Usable Area for Erasure in User Boot Mode
Item
Selecting on-chip
program to be
downloaded
Writing H'A5 to key
register
Writing 1 to SCO in
FCCS (download)
Key register clearing
Judging download
result
Erasing
proce-
dure
Download error
processing
Setting initialization
parameters
Initialization
Judging initialization
result
Initialization error
processing
Interrupt processing
routine
Switching MATs by
FMATS
Writing H'5A to key
register
Setting erasure
parameters
Storable/Executable Area
On-
Chip
RAM
User
MAT
External
Space
(Expanded
Mode with
MD0 = 0)
O
O
O
O
O
O
O
X
X
O
O
O
O
O
O
O
O
O
O
O
O
O
X
X
O
O
O
O
O
O
O
X
O
O
X
X
O
X
O
O
X
O
Selected MAT
User
MAT
User
Boot
Mat
O
Embedded
Program
Storage
Area
O
O
O
O
O
O
O
O
O
O
O
O
O
Rev.2.0, 07/03, page 843 of 960