Renesas H8S/2100 Series Hardware Manual page 791

Table 24.13 Usable Area for Erasure in User Boot Mode
Item
Selecting on-chip program to
be downloaded
Writing H'A5 to FKEY
Writing 1 to SCO in FCCS
(download)
FKEY clearing
Determination of downloaded
result
Download error processing
Setting initialization parameter O
Initialization
Determination of initialization
result
Initialization error processing
NMI handling routine
Disabling interrupts
Switching MATs by FMATS
Writing H'5A to FKEY
Setting erasure parameter
Erasure
Determination of erasure result O
Erasing error processing
FKEY clearing
Switching MATs by FMATS
Notes: * Switching FMATS by a program in the on chip RAM enables this area to be used.
Storable/Executable Area
On-Chip User Boot
RAM MAT
O O
O O
×
O
O O
O O
O O
O
×
O
O O
O O
×
O
O O
×
O
×
O
×
O
×
O
×
×*
O
×
O
×
O
Section 24 Flash Memory
Selected MAT
User Boot
User MAT MAT
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
Rev. 1.00 May 09, 2008 Page 765 of 954
Embedded
Program
Storage MAT
O
REJ09B0462-0100