R5F72115D160FPV datasheet(960/1228 Pages) RENESAS

960 / 1228 page

Section 21 Flash Memory

Rev. 2.00 May. 08, 2008 Page 936 of 1200

REJ09B0344-0200

(2)

User MAT Programming in User Boot Mode

For programming the user MAT in user boot mode, additional processings 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 21.14 shows the procedure for programming the user MAT in user boot mode.

Select on-chip program

to be downloaded and

set download destination

by FTDAR

Set FKEY to H'A5

DPFR=0 ?

Yes

Download error processing

Set the FPEFEQ and

FUBRA parameters

Initialization

JSR FTDAR setting+32

Yes

End programming

procedure program

FPFR=0 ?

Initialization error processing

Clear FKEY to 0

Set parameter to R4 and

R5 (FMPAR and FMPDR)

Programming

JSR FTDAR setting+16

Yes

FPFR=0 ?

Yes

Required data

programming is

completed?

Set FKEY to H'5A

Clear FKEY to 0

MAT

switchover

MAT

switchover

Set FMATS to value other than

H'AA to select user MAT

After clearing VBR,

set SCO to 1 and

execute download

Clear FKEY and programming

error processing*

Set FMATS to H'AA to

select user boot MAT

User-boot-MAT

selection state

Note: * The MAT must be switched by FMATS

to perform the programming error

processing in the user boot MAT.

Start programming

procedure program

Figure 21.14 Procedure for Programming User MAT in User Boot Mode

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