HD6412320 RENESAS [Renesas Technology Corp], HD6412320 Datasheet - Page 784

• Manufacturer Part Number: HD6412320
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family H8S-2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 19 ROM
19.5.3
EBR1 is an 8-bit register that specifies the flash memory erase area block by block. EBR1 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 EBR1 is set, the corresponding block can be erased. Other
blocks are erase-protected. Set only one bit in EBR1 and EBR2 together (setting more than one bit
will automatically clear all EBR1 and EBR2 bits to 0). 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 19.7.
19.5.4
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 7 and 6 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 19.7.
Rev.6.00 Sep. 27, 2007 Page 754 of 1268
REJ09B0220-0600
Bit
EBR1
Initial value :
R/W
Bit
EBR2
Initial value :
R/W
Erase Block Register 1 (EBR1)
Erase Block Registers 2 (EBR2)
:
:
:
:
R/W
EB7
—
—
7
0
7
0
R/W
EB6
—
—
6
0
6
0
EB13
R/W
R/W
EB5
5
0
5
0
EB12
R/W
R/W
EB4
4
0
4
0
EB11
EB3
R/W
R/W
3
0
3
0
EB10
R/W
R/W
EB2
2
0
2
0
R/W
R/W
EB1
EB9
1
0
1
0
R/W
R/W
EB0
EB8
0
0
0
0