Hitachi F-ZTAT H8/3039 Series Hardware Manual page 606

RAMCR—RAM Control Register
Bit
Modes
Initial value
1 to 4
R/W
Modes Initial value
5 to 7 R/W
Note: * In mode 6 (single-chip normal mode), flash memory emulation by RAM is not
supported; these bits can be modified, but must not be set to 1.
This register is used only in the flash memory versions. Reading the corresponding address in
a mask ROM version will always return 1s, and writes to this address are disabled.
600
7 6
— —
1 1
— —
1 1
— —
Reserved bits
RAM select, RAM2, RAM1
Bit 3 Bit 2 Bit 1
RAMS RAM2 RAM1
0 0/1 0/1
1 0 0
1
1 0
1
H'47
5 4 3
— —
RAMS
1 1
— — R
1 1
— — R/W*
RAM Area
H'FFF000 to H'FFF3FF
H'000000 to H'0003FF
H'000400 to H'0007FF
H'000800 to H'000BFF
H'000C00 to H'000FFF
Flash Memory
2 1
RAM2 RAM1
0 0 0
R R
0 0 0
R/W* R/W*
RAM Emulation Status
No emulation
Mapping RAM
0
—
1
—
1
—