h8s2277 Renesas Electronics Corporation., h8s2277 Datasheet - Page 541

• Manufacturer Part Number: h8s2277
• Description: Hitachi Single-chip Microcomputer H8s/2276 Series
• Manufacturer: Renesas Electronics Corporation.

16.3
When the RAME bit is set to 1, accesses to addresses H'FFB000 to H'FFEFBF and H'FFFFC0 to
H'FFFFFF in the LSI is directed to the on-chip RAM. When the RAME bit is cleared to 0, the off-
chip address space is accessed.
Since the on-chip RAM is connected to the CPU by an internal 16-bit data bus, it can be written to
and read in byte or word units. Each type of access can be performed in one state.
Even addresses use the upper 8 bits, and odd addresses use the lower 8 bits. Word data must start
at an even address.
16.4
DTC register information can be located in addresses H'FFEBC0 to H'FFEFBF. When the DTC is
used, the RAME bit must not be cleared to 0.
Operation
Usage Note
519