Datasheet

Section 19 ROM
Rev.6.00 Sep. 27, 2007 Page 869 of 1268
REJ09B0220-0600
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
0 Emulation not selected (Initial value)
Program/erase-protection of all flash memory blocks is disabled
1 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 19.50).
Table 19.50 Flash Memory Area Divisions
RAM Area Block Name RAMS RAM2 RAM1 RAM0
H'FFDC00 to H'FFEBFF RAM area, 4 kbytes 0 * * *
H'000000 to H'000FFF EB0 (4 kbytes) 1 0 0 0
H'001000 to H'001FFF EB1 (4 kbytes) 1 0 0 1
H'002000 to H'002FFF EB2 (4 kbytes) 1 0 1 0
H'003000 to H'003FFF EB3 (4 kbytes) 1 0 1 1
H'004000 to H'004FFF EB4 (4 kbytes) 1 1 0 0
H'005000 to H'005FFF EB5 (4 kbytes) 1 1 0 1
H'006000 to H'006FFF EB6 (4 kbytes) 1 1 1 0
H'007000 to H'007FFF EB7 (4 kbytes) 1 1 1 1
*: Don’t care