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IMPORTANT
Notes on Using Emulation Memory for Expansion:
• When the single-chip mode or memory expansion mode is set by specifying the
processor mode, internal ROM area is automatically allocated to the internal flash
ROM. Therefore, it is not necessary to deliberately specify emulation memory as
expansion area in order to allocate the internal ROM area.
• The 4MB memory mounted in the product can be allocated out.
Set memory
allocation so that the total of the 4 length values does not exceed the emulation
memory size (4 MB). However, the emulation memory is 3.25 MB in the memory
expansion mode.
•
Be careful that the specified areas do not overlap one another.
• Do not set the following areas for memory allocation of the MCU. Set these areas
referring the specifications of the MCU.
(1) Area allocated for DRAM connection
(2) Area allocated for multiplex bus
(3) Unusable area
•Memory in the emulator is automatically selected as reset vector area regardless of
settings.
• Except for the SFR, RAM, ROM and internally reserved areas, all areas other than
the set area are externally accessible.
• MCU internal resources are automatically selected as SFR and RAM areas regard-
less of settings.
Table 4.3 Specifications of expansion emulation memory
IMPORTANT
Note on Memory Access:
•When setting the processor mode to the memory expansion mode, it may be changed
to the memory expansion mode temporarily before the user program itself changes
from the single-chip mode to the memory expansion mode.
Take due consideration on this phenomenon in the following cases:
(1) Immediately before executing the program after setting a software break
(2) Immediately after stopping the program when a software break is set
Maximum operating frequency
Number of area which can be set
Area size
Emulation memory size
Possible banks to be set
30 MHz, 1 wait
Max. 4 areas
Successive 256 KB or 1 MB
(Can be mixed)
Total of 4 areas: 4 MB
(1) For 256KB area
X0h, X4h, X8h, XCh bank
e.g.) 20 bank, 64 bank, A8 bank, EC bank etc.
(2) For 1MB area
X0h bank
e.g.) 20 bank, 40 bank, 80 bank, A0 bank etc.