Datasheet

Section 20 Flash Memory (F-ZTAT Version)
Rev. 6.00 Mar. 18, 2010 Page 729 of 982
REJ09B0054-0600
• 128-kbyte Flash Memory
Bit Bit Name Initial Value R/W Description
7 to 2 — All 0 R/W Reserved
Initial values should not be changed.
1 EB9 0 R/W When this bit is set to 1, 32 kbytes of EB9
(H'018000 to H'01FFFF) will be erased.
0 EB8 0 R/W When this bit is set to 1, 32 kbytes of EB8
(H'010000 to H'017FFF) will be erased.
20.5.5 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.
Bit Bit Name Initial Value R/W Description
7 to 5 — All 0 R Reserved
These bits are always read as 0.
4 — 0 R/W Reserved
Only 0 should be written to this bit.
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.