HD6412373R RENESAS [Renesas Technology Corp], HD6412373R Datasheet - Page 975

• Manufacturer Part Number: HD6412373R
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

The difference between the programming procedures in user program mode and user boot mode is
whether the MAT is switched or not as shown in figure 21.13.
In user boot mode, the user boot MAT can be seen in the flash memory space with the user MAT
hidden in the background. The user MAT and user boot MAT are switched only while the user
Figure 21.13 Procedure for Programming User MAT in User Boot Mode
JSR FTDAR setting + 32
Select on-chip program
to be downloaded and
and bus master operation
destination by FTDAR
Set the FPEFEQ and
Set SCO to 1 and
execute download
FUBRA parameters
Set FKEY to H'A5
specify download
procedure program
Clear FKEY to 0
Start programming
Disable interrupts
Initialization
other than CPU
DPFR = 0 ?
FPFR = 0 ?
1
Yes
Yes
Initialization error processing
Download error processing
No
No
User-boot-MAT
selection state
Section 21 Flash Memory (0.18-μm F-ZTAT Version)
Note: * The MAT must be switched by FMATS
Rev.7.00 Mar. 18, 2009 page 907 of 1136
No
JSR FTDAR setting + 16
JSR FTDAR setting + 16
Set FMATS to value other than
ER1 (FMPAR and FMPDR)
Set parameter to ER0 and
Programming finished
Set FMATS to H'AA to
to perform the programming error
processing in the user boot MAT.
select user boot MAT
H'AA to select user MAT
Set FKEY to H'A5
procedure program
Clear FKEY to 0
End programming
Programming
programming is
processing
Required data
FPFR = 0 ?
FPFR = 0 ?
completed?
1
Yes
Yes
Yes
Clear FKEY and programming
Clear FKEY and programming
No
No
REJ09B0109-0700
error processing*
error processing*
switchover
switchover
MAT
MAT