HD64F2638F20J Datasheet, PDF (1412/1512 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2600 Series

Appendix B Internal I/O Register
H8S/2639, H8S/2638, H8S/2636,
H8S/2630, H8S/2635 Group
RAMER—RAM Emulation Register
Bit
7
⎯
Initial value
0
Read/Write
R
6
5
⎯
⎯
0
0
R
R/W
H'FEDB
Flash Memory
4
3
2
1
0
⎯ RAMS RAM2 RAM1 RAM0
0
0
0
0
0
R/W R/W R/W R/W R/W
Flash Memory Area Selection
• H8S/2636
Addresses
H'FFE000−H'FFE3FF
H'000000−H'0003FF
H'000400−H'0007FF
H'000800−H'000BFF
H'000C00−H'000FFF
Block Name
RAM area 1 kB
EB0 (1 kB)
EB1 (1 kB)
EB2 (1 kB)
EB3 (1 kB)
RAMS RAM2 RAM1 RAM0
0
*
*
*
1
0
0
1
1
0
1
*: Don't care
• H8S/2638, H8S/2639, H8S/2630
Addresses
Block Name
H'FFD000−H'FFDFFF RAM area 4 kB
H'000000−H'000FFF EB0 (4 kB)
H'001000−H'001FFF EB1 (4 kB)
H'002000−H'002FFF EB2 (4 kB)
H'003000−H'003FFF EB3 (4 kB)
H'004000−H'004FFF EB4 (4 kB)
H'005000−H'005FFF EB5 (4 kB)
H'006000−H'006FFF EB6 (4 kB)
H'007000−H'007FFF EB7 (4 kB)
RAMS RAM2 RAM1 RAM0
0
*
*
*
1
0
0
0
1
10
1
1
0
0
1
10
1
*: Don't care
• H8S/2635
Addresses
H'FFD800−H'FFE7FF
H'000000−H'000FFF
H'001000−H'001FFF
H'002000−H'002FFF
H'003000−H'003FFF
H'004000−H'004FFF
H'005000−H'005FFF
H'006000−H'006FFF
H'007000−H'007FFF
Block Name
RAM area 4 kB
EB0 (4 kB)
EB1 (4 kB)
EB2 (4 kB)
EB3 (4 kB)
EB4 (4 kB)
EB5 (4 kB)
EB6 (4 kB)
EB7 (4 kB)
RAMS RAM2 RAM1 RAM0
0
*
*
*
1
0
0
0
1
10
1
1
0
0
1
10
1
*: Don't care
RAM Select
0 Emulation not selected
Program/erase-protection of all flash memory blocks is disabled
1 Emulation selected
Program/erase-protection of all flash memory blocks is enabled
Page 1362 of 1458
REJ09B0103-0800 Rev. 8.00
May 28, 2010