Datasheet

Section 22 Flash Memory
Rev. 3.00 Sep. 28, 2009 Page 723 of 910
REJ09B0350-0300
Table 22.13 Usable Area for Erasure in User Boot Mode
Storable/Executable Area Selected MAT
Item
On-chip RAM
User Boot
MAT User MAT
User Boot
MAT
Embedded
Program
Storage MAT
Selecting on-chip program
to be downloaded
O O O
Writing H'A5 to FKEY O O O
Writing 1 to SCO in FCCS
(download)
O × O
FKEY clearing O O O
Determination of
download result
O O O
Download error
processing
O O O
Setting initialization
parameter
O O O
Initialization O × O
Determination of
initialization result
O O O
Initialization error
processing
O O O
Disabling interrupts O O O
Switching MATs by
FMATS
O × O
Writing H'5A to FKEY O × O
Setting erasure parameter O × O
Erasure O × O
Determination of erasure
result
O × O
Erasing error processing O ×* O
FKEY clearing O × O
Switching MATs by
FMATS
O × O
Note: * Switching FMATS by a program in the on-chip RAM enables this area to be used.