HD64F2357F20V Datasheet, PDF (660/1049 Pages) Renesas Technology Corp – Hardware Manual Renesas 16-Bit Single-chip Microcomputer H8S Family / H8S/2300 Series

19.16.4 Erase Block Registers 2 (EBR2)
Bit
:
7
6
5
EBR2
—
—
—
Initial value :
0
0
0
R/W
:—
—
—
4
3
2
1
0
—
EB11 EB10 EB9
EB8
0
0
0
0
0
—
R/W
R/W
R/W
R/W
EBR2 is an 8-bit register that specifies the flash memory erase area block by block. EBR2 is initialized to H'00 by a reset,
in hardware standby mode and software standby mode, and the SWE bit in FLMCR1 is not set. When a bit in EBR2 is set,
the corresponding block can be erased. Other blocks are erase-protected. Set only one bit in EBR2 and EBR1 together
(setting more than one bit will automatically clear all EBR1 and EBR2 bits to 0). Bits 4 to 7 are reserved; they are always
read as 0 and cannot be modified. When on-chip flash memory is disabled, a read will return H'00, and writes are invalid.
The flash memory block configuration is shown in table 19-33.
Table 19-33 Flash Memory Erase Blocks
Block (Size)
EB0 (4 kbytes)
EB1 (4 kbytes)
EB2 (4 kbytes)
EB3 (4 kbytes)
EB4 (4 kbytes)
EB5 (4 kbytes)
EB6 (4 kbytes)
EB7 (4 kbytes)
EB8 (32 kbytes)
EB9 (64 kbytes)
EB10 (64 kbytes)
EB11 (64 kbytes)
Address
H'000000 to H'000FFF
H'001000 to H'001FFF
H'002000 to H'002FFF
H'003000 to H'003FFF
H'004000 to H'004FFF
H'005000 to H'005FFF
H'006000 to H'006FFF
H'007000 to H'007FFF
H'008000 to H'00FFFF
H'010000 to H'01FFFF
H'020000 to H'02FFFF
H'030000 to H'03FFFF
19.16.5 System Control Register 2 (SYSCR2)
Bit
:
7
6
5
4
3
2
1
0
—
—
—
— FLSHE —
—
—
Initial value :
0
0
0
0
0
0
0
0
R/W
:—
—
—
—
R/W
—
—
—
SYSCR2 is an 8-bit readable/writable register that performs on-chip flash memory control.
SYSCR2 is initialized to H'00 by a reset and in hardware standby mode.
SYSCR2 can only be used in the F-ZTAT version. In the masked ROM version this register will return an undefined value
if read, and cannot be modified.
Bits 7 to 4—Reserved: These bits cannot be modified and are always read as 0.
Rev.6.00 Oct.28.2004 page 630 of 1016
REJ09B0138-0600H