R5F21133DFP RENESAS [Renesas Technology Corp], R5F21133DFP Datasheet - Page 178

• Manufacturer Part Number: R5F21133DFP
• Description: 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY/R8C/Tiny SERIES
• Manufacturer: RENESAS [Renesas Technology Corp]

R8C/13 Group
Rev.1.20
REJ09B0111-0120
Figure 17.2 Address for ID Code Stored
17.3 Functions To Prevent Flash Memory from Rewriting
To prevent the flash memory from being read or rewritten easily, standard serial I/O mode has an ID code
check function.
17.3.1 ID Code Check Function
Use this function in standard serial I/O mode. Unless the flash memory is blank, the ID codes sent
from the programmer and the ID codes written in the flash memory are compared to see if they match.
If the ID codes do not match, the commands sent from the programmer are not accepted. The ID code
consists of 8-bit data, the areas of which, beginning with the first byte, are 00FFDF
00FFEB
codes are preset at these addresses and write it in the flash memory.
Jan 27, 2006
16
, 00FFEF
0 0 F F D F
0 0 F F E 3
00FFE7
00FFEB
0 0 F F E F
0 0 F F F 3
00FFF7
00FFFB
0 0 F F F F
page 167 of 205
N O T E S :
1 . T h e O F S r e g i s t e r i s a s s i g n e d t o t h e 0 0 F F F F
16
a d d r e s s . R e f e r t o F i g u r e 1 1 . 2 O F S , W D C , W D T R
a n d W D T S r e g i s t e r s f o r t h e O F S r e g i s t e r d e t a i l s .
A d d r e s s
, 00FFF3
1 6
16
1 6
16
1 6
1 6
16
1 6
16
t o 0 0 F F F 0
to 00FFF4
t o 0 0 F F E 0
to 00FFE4
t o 0 0 F F F C
t o 0 0 F F E C
to 00FFF8
t o 0 0 F F D C
to 00FFE8
16
, 00FFF7
1 6
16
1 6
16
16
16
1 6
1 6
1 6
I D 1
I D 2
ID3
ID4
ID5
ID6
I D 7
( N o t e 1 )
16
, and 00FFFB
17.3 Functions To Prevent Flash Memory from Rewriting
17.3 Functions To Prevent Flash Memory from Rewriting
O s c i l l a t i o n s t o p d e t e c t i o n / w a t c h d o g
t i m e r v e c t o r / v o l t a g e d e t e c t i o n
U n d e f i n e d i n s t r u c t i o n v e c t o r
O v e r f l o w v e c t o r
BRK instruction vector
Address match vector
Single step vector
R e s e t v e c t o r
(Reserved)
(Reserved)
4 bytes
16
. Prepare a program in which the ID
1 6
16
, 00FFE3
16
,