h8s-2649 Renesas Electronics Corporation., h8s-2649 Datasheet - Page 578

• Manufacturer Part Number: h8s-2649
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 19 ROM
19.5.4
EBR2 specifies the flash memory erase area block. EBR2 is initialized to H'00 when the SWE bit
in FLMCR1 is 0. Do not set more than one bit at a time, as this will cause all the bits in EBR1 and
EBR2 to be automatically cleared to 0.
19.5.5
RAMER specifies the area of flash memory to be overlapped with part of RAM when emulating
real-time flash memory programming. RAMER settings should be made in user mode or user
program mode. To ensure correct operation of the emulation function, the ROM for which RAM
emulation is performed should not be accessed immediately after this register has been modified.
Normal execution of an access immediately after register modification is not guaranteed.
Rev. 2.00 Dec. 05, 2005 Page 540 of 724
REJ09B0200-0200
Bit
7 to 4
3
2
1
0
Bit
7 to 5
4
3
Bit Name

EB11
EB10
EB9
EB8
Bit Name


RAMS
Erase Block Register 2 (EBR2)
RAM Emulation Register (RAMER)
Initial
Value
All 0
0
0
0
0
Initial
Value
All 0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
R/W
R/W
Description
Reserved
The write value should always be 0.
When this bit is set to 1, 64 kbytes of EB11 (H'030000 to
H'03FFFF) will be erased.
When this bit is set to 1, 64 kbytes of EB10 (H'020000 to
H'02FFFF) will be erased.
When this bit is set to 1, 64 kbytes of EB9 (H'010000 to
H'01FFFF) will be erased.
When this bit is set to 1, 32 kbytes of EB8 (H'008000 to
H'00FFFF) will be erased.
Description
Reserved
These bits are always read as 0.
Reserved
Always write 0 before read.
RAM Select
Specifies selection or non-selection of flash memory
emulation in RAM. When RAMS = 1, the flash memory is
overlapped with part of RAM, and all flash memory block
are program/erase-protected.