r5f71374an80fpv Renesas Electronics Corporation., r5f71374an80fpv Datasheet - Page 959

• Manufacturer Part Number: r5f71374an80fpv
• Description: 32-bit Risc Microcomputer Superh?? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

(2) User MAT Programming in User Boot Mode
For programming the user MAT in user boot mode, additional processing made by setting
FMATS are required: switching from user-boot-MAT selection state to user-MAT selection
state, and switching back to user-boot-MAT selection state after programming completes.
Figure 22.14 shows the procedure for programming the user MAT in user boot mode.
Figure 22.14 Procedure for Programming User MAT in User Boot Mode
set download destination
Select on-chip program
JSR FTDAR setting+32
to be downloaded and
Set the FPEFEQ and
After clearing VBR,
execute download
set SCO to 1 and
FUBRA parameters
Set FKEY to H'A5
procedure program
Clear FKEY to 0
Start programming
Initialization
by FTDAR
DPFR=0 ?
FPFR=0 ?
1
Yes
Yes
Initialization error processing
Download error processing
No
No
User-boot-MAT
selection state
Note: * The MAT must be switched by FMATS
No
Rev. 1.00 Sep. 21, 2007 Page 933 of 1124
Set FMATS to value other than
R5 (FMPAR and FMPDR)
Set FMATS to H'AA to
Set parameter to R4 and
JSR FTDAR setting+16
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'5A
procedure program
Clear FKEY to 0
End programming
Programming
programming is
Required data
FPFR=0 ?
completed?
1
Yes
Yes
Clear FKEY and programming
Section 22 Flash Memory
No
error processing*
REJ09B0402-0100
switchover
switchover
MAT
MAT