SH7080_09 Datasheet, PDF (1307/1622 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family

Section 23 Flash Memory
(4) Erasure Execution
When flash memory is erased, the erase-block number on the user MAT must be passed to the
erasing program which is downloaded. This is set to the FEBS parameter (general register R4).
One block is specified from the block number 0 to 15.
For details on the erasing procedure, see section 23.5.2, User Program Mode.
(4.1) Flash erase block select parameter (FEBS: general register R4 of CPU)
This parameter specifies the erase-block number. Several block numbers cannot be specified.
Bit: 31
-
Initial value: -
R/W: R/W
30
-
-
R/W
29
-
-
R/W
28
-
-
R/W
27
-
-
R/W
26
-
-
R/W
25
-
-
R/W
24
-
-
R/W
23
-
-
R/W
22
-
-
R/W
21
-
-
R/W
20
-
-
R/W
19
-
-
R/W
18
-
-
R/W
17
-
-
R/W
16
-
-
R/W
Bit: 15
-
Initial value: -
R/W: R/W
14
-
-
R/W
13
-
-
R/W
12
-
-
R/W
11
-
-
R/W
10
-
-
R/W
9
-
-
R/W
8
-
-
R/W
7
-
R/W
6
-
R/W
5
-
R/W
4
3
EBS[7:0]
-
-
R/W R/W
2
-
R/W
1
-
R/W
0
-
R/W
Bit
Bit Name
31 to 8 ⎯
Initial
Value
R/W
Undefined R/W
7 to 0 EBS[7:0] Undefined R/W
Description
Unused
Return 0.
• 512-kbyte flash memory
Set the erase-block number in the range from 0 to 15. 0
corresponds to the EB0 block and 15 corresponds to
the EB15 block. An error occurs when a number other
than 0 to 15 (H'00 to H'0F) is set.
• 256-kbyte flash memory
Set the erase-block number in the range from 0 to 11. 0
corresponds to the EB0 block and 11 corresponds to
the EB11 block. An error occurs when a number other
than 0 to 11 (H'00 to H'0B) is set.
Rev. 4.00 Dec. 15, 2009 Page 1247 of 1558
REJ09B0181-0400