HD64F3028F25 Datasheet, PDF (808/925 Pages) Renesas Technology Corp – Hardware Manual Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series

RAMCR—RAM Control Register
H'EE077
Flash Memory
Bit
7
—
Modes Initial value ₁
1 to 4 R/W
—
Modes Initial value 1
5 to 7 R/W
—
6
5
4
3
2
1
0
—
—
— RAMS RAM2 RAM1 RAM0
1
1
1
0
0
0
0
—
—
—
R
R
R
—
1
1
1
—
—
—
Reserved bits
0
0
0
0
R/W* R/W* R/W* R/W*
RAM select, RAM2 to RAM0
Bit 3 Bit 2 Bit 1 Bit 0
RAMS RAM2 RAM1 RAM0
RAM Area
0 0/1 0/1 0/1 H'FFE000 to H'FFEFFF
1
0
0
0 H'000000 to H'000FFF
1 H'001000 to H'001FFF
1
0 H'002000 to H'002FFF
1 H'003000 to H'003FFF
1
0
0 H'004000 to H'004FFF
1 H'005000 to H'005FFF
1
0 H'006000 to H'006FFF
1 H'007000 to H'007FFF
RAM Emulation Status
Emulation
Mapping RAM
Notes: This register is used only in the flash memory and flash memory R versions.
Reading the corresponding address in a mask ROM version will always return 1s, and writes to this
address are disabled.
* 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.
Rev. 2.00, 09/03, page 776 of 890