H8SLASH3028F datasheet(613/923 Pages) RENESAS

613 / 923 page

Rev. 2.00, 09/03, page 583 of 890

Bit 3—RAM Select (RAMS): Specifies selection or non-selection of flash memory emulation in

RAM. When RAMS = 1, all flash memory blocks are program/erase-protected.

Bit 3

RAMS

Description

Emulation not selected

Program/erase-protection of all flash memory blocks is disabled

(Initial value)

Emulation selected

Program/erase-protection of all flash memory blocks is enabled

Bits 2 to 0—Flash Memory Area Selection (RAM2 to RAM0): These bits are used together

with bit 3 to select the flash memory area to be overlapped with RAM. (See table 18.5.)

Table 18.5 Flash Memory Area Divisions

RAM Area

Block Name

RAMS

RAM2

RAM1

RAM0

H'FFE000 to H'FFEFFF

4-kbyte RAM area

H'000000 to H'000FFF

EB0 (4 kbytes)

H'001000 to H'001FFF

EB1 (4 kbytes)

H'002000 to H'002FFF

EB2 (4 kbytes)

H'003000 to H'003FFF

EB3 (4 kbytes)

H'004000 to H'004FFF

EB4 (4 kbytes)

H'005000 to H'005FFF

EB5 (4 kbytes)

H'006000 to H'006FFF

EB6 (4 kbytes)

H'007000 to H'007FFF

EB7 (4 kbytes)

*: Don’t care

Note: Flash memory emulation by RAM is not supported in mode 6 (single-chip normal mode);

therefore, although these bits can be written, they should not be set to 1.

When performing flash memory emulation by RAM, the RAME bit in SYSCR must be set to

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