Technical information

11
3.4 Optional SIMM Memory Module
When the optional SIMM memory module board is installed in the E6000, up to four banks of the
optional SIMM memory module can be allocated within the user area by memory mapping.
Note that the following restrictions apply to the optional SIMM memory module.
Table 3.1 Restrictions on the
Optional SIMM Memory Module
Item Restrictions
Operating frequency When the operating frequency is 20 MHz or less, there are no
restrictions on operating frequency. If the operating frequency is higher
than 20 MHz, use the optional SIMM memory module in a three-state
area.
In this emulator, the access state control and wait control of the bus
controller are enabled for the optional SIMM memory module.
Set the wait control according to the frequency. At reset, the optional
SIMM memory module can be accessed in three cycles with three
waits. In this emulator, when the operating frequency is 25 MHz or
less, the optional SIMM memory module can be accessed in three
cycles with no wait.
Single chip There is no external access area in the single-chip mode. This area of
the memory map is reserved where read or write access is disabled.
In this emulator, optional SIMM memory module can be allocated to the
reserved area. However, the restrictions on the reserved area
described below apply.
Reserved area When optional SIMM memory module is allocated to the reserved area,
the wait state will be three cycles with no wait regardless of the setting
of the bus controller. The optional SIMM memory module can be
accessed when the operating frequency is 25 MHz or less. If the actual
MCU accesses the reserved area, note that normal operation cannot
be guaranteed.
Memory map When optional SIMM memory module is allocated to Area 0 to Area 7,
it is not possible to access that area of the memory map as the external
address area.
When an area is to be accessed as user memory, do not allocate
optional SIMM memory module to that area.