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19.5.5
RAM Emulation Register (RAMER)
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. For
details, refer to section 19.7, Flash Memory Emulation in RAM.
Bit
Bit Name Initial Value
R/W
Description
7 to 5 —
0
—
Reserved:
These bits always read as 0.
4
—
0
R/W
Reserved:
The write value should always be 0.
3
RAMS
0
R/W
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.
2
1
0
RAM2
RAM1
RAM0
0
0
0
R/W
R/W
R/W
Flash Memory Area Selection:
When the RAMS bit is set to 1, selects one of the
following flash memory areas to overlap the RAM area.
The areas correspond with 4-kbyte erase blocks.
000: H’000000 to H’000FFF (EB0)
001: H’001000 to H’001FFF (EB1)
010: H’002000 to H’002FFF (EB2)
011: H’003000 to H’003FFF (EB3)
100: H’004000 to H’004FFF (EB4)
101: H’005000 to H’005FFF (EB5)
110: H’006000 to H’006FFF (EB6)
111: H’007000 to H’007FFF (EB7)
Содержание H8S/2215 Series
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Страница 481: ...Rev 3 0 10 02 page 423 of 686 I O pin Control OUT IN TDI pin TDO pin Figure 14 2 Boundary Scan Register Configuration ...
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