SH7059 Datasheet, PDF (816/1042 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

24. ROM (SH7058S)
Table 24.30 (4) Usable Area for Erasure in User Boot Mode
Storable/Executable Area
Selected MAT
Item
On-Chip
RAM
User
Boot
MAT
External
Space
(Expanded
Mode with
MD0 = 0)
User
MAT
Embedded
User
Program
Boot Mat Storage Area
Selecting on-chip
O
O
O
O
program to be
downloaded
Writing H'A5 to key
O
O
O
O
register
Writing 1 to SCO in
O
X
X
O
FCCS (download)
Key register clearing
O
O
O
O
Judging download
O
O
O
O
result
Download error
O
O
O
O
processing
Eras-
Setting initialization
O
O
O
O
ing
parameters
proce- _{Initialization}
O
X
X
O
dure
Judging initialization
O
O
O
O
result
Initialization error
O
O
O
O
processing
Interrupt processing
O
X
O
O
routine
Switching MATs by
O
X
X
O
FMATS
Writing H'5A to key
O
X
O
O
register
Setting erasure
O
X
O
O
parameters
Erasure
O
X
X
O
Judging erasure result O
X
O
O
Erasing error
O
X*
O
O
processing
Key register clearing
O
X
O
O
Switching MATs by
O
X
X
O
FMATS
Note: * If the MATs have been switched by FMATS in on-chip RAM, this MAT can be used.
Rev.3.00 Mar. 12, 2008 Page 726 of 948
REJ09B0177-0300