HD6412320 RENESAS [Renesas Technology Corp], HD6412320 Datasheet - Page 835
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HD6412320
Manufacturer Part Number
HD6412320
Description
Renesas 16-Bit Single-Chip Microcomputer H8S Family H8S-2300 Series
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6412320.pdf
(1302 pages)
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19.14.3 Erase Block Register 1 (EBR1)
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, when a low
level is input to the FWE pin, and when a high level is input to the FWE pin 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 19.28.
19.14.4 Erase Block Registers 2 (EBR2)
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, when a low
level is input to the FWE pin, and when a high level is input to the FWE pin 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 to 4 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 19.28.
Bit
EBR1
Initial value :
R/W
Bit
EBR2
Initial value :
R/W
:
:
:
:
R/W
EB7
—
—
7
0
7
0
R/W
EB6
—
—
6
0
6
0
R/W
EB5
—
—
5
0
5
0
EB4
R/W
—
—
4
0
4
0
Rev.6.00 Sep. 27, 2007 Page 805 of 1268
EB11
R/W
R/W
EB3
3
0
3
0
EB10
R/W
R/W
EB2
2
0
2
0
REJ09B0220-0600
Section 19 ROM
R/W
R/W
EB1
EB9
1
0
1
0
EB0
R/W
EB8
R/W
0
0
0
0
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