Datasheet

Rev.6.00 Oct.28.2004 page 587 of 1016
REJ09B0138-0600H
Bit 2—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 2
RAMS Description
0 Emulation not selected
Program/erase-protection of all flash memory blocks is disabled
(Initial value)
1 Emulation selected
Program/erase-protection of all flash memory blocks is enabled
Bits 1 and 0—Flash Memory Area Selection (RAM1, RAM0): These bits are used together with bit 2 to select the flash
memory area to be overlapped with RAM. (see table 19-13.)
Table 19-13 Flash Memory Area Divisions
Addresses Block Name RAMS RAM1 RAM0
H'FFDC00–H'FFDFFF RAM area 1 kbyte 0 ××
H'000000–H'0003FF EB0 (1 kbyte) 1 0 0
H'000400–H'0007FF EB1 (1 kbyte) 1 0 1
H'000800–H'000BFF EB2 (1 kbyte) 1 1 0
H'000C00–H'000FFF EB3 (1 kbyte) 1 1 1
×: Don’t care