h8s-2628 Renesas Electronics Corporation., h8s-2628 Datasheet - Page 523

• Manufacturer Part Number: h8s-2628
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

An example in which flash memory block area EB0 is overlapped is shown in figure 19.8.
1. The RAM area to be overlapped is fixed at a 1-kbyte area in the range H'FFE000 to H'FFE3FF.
2. The flash memory area to overlap is selected by RAMER from a 1-kbyte area of the EB0 to
3. The overlapped RAM area can be accessed from both the flash memory addresses and RAM
4. When the RAMS bit in RAMER is set to 1, program/erase protection is enabled for all flash
5. A RAM area cannot be erased by execution of software in accordance with the erase
6. Block area EB0 contains the vector table. When performing RAM emulation, the vector table
EB3 blocks.
addresses.
memory blocks (emulation protection). In this state, setting the P1 or E1 bit in FLMCR1 to 1
does not make a transition to program mode or erase mode.
algorithm.
is needed in the overlap RAM.
H'000000
H'0003FF
H'000400
H'0007FF
H'000800
H'000BFF
H'000C00
H'000FFF
H'FFE000
H'FFE3FF
Figure 19.8 Example of RAM Overlap Operation
Normal memory map
Flash memory
On-chip RAM
(1 kbyte)
(EB1)
(EB2)
(EB3)
(EB0)
Rev. 3.00 Oct 04, 2005 page 483 of 598
with overlapped RAM
Flash memory
Flash memory
On-chip RAM
On-chip RAM
H'FFE000 to
Memory map
(Shadow of
H'FFE3FF)
(1 kbyte)
(EB0)
(EB2)
(EB3)
REJ09B0155-0300
Section 19 ROM