H8SLASH3021 datasheet(486/712 Pages) RENESAS

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15. ROM

Rev.2.00 Mar. 22, 2007 Page 462 of 684

REJ09B0352-0200

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

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

Bit 3

RAMS

Description

Emulation not selected

(Initial value)

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

Emulation selected

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

Bits 2 to 0—Flash Memory Area Selection: These bits are used together with bit 3 to select the

flash memory area to be overlapped with RAM. (See table 15.4.)

Table 15.4

Flash Memory Area Divisions

Addresses

Block Name

RAMS

RAM2

RAM1

RAM0

H'FFFFE000–H'FFFFEFFF

RAM area 4 kbytes

H'00000000–H'00000FFF

EB0 (4 kbytes)

H'00001000–H'00001FFF

EB1 (4 kbytes)

H'00002000–H'00002FFF

EB2 (4 kbytes)

H'00003000–H'00003FFF

EB3 (4 kbytes)

H'00004000–H'00004FFF

EB4 (4 kbytes)

H'00005000–H'00005FFF

EB5 (4 kbytes)

H'00006000–H'00006FFF

EB6 (4 kbytes)

H'00007000–H'00007FFF

EB7 (4 kbytes)

Don't care

Note:

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

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