E62655RUSB Renesas Electronics America, E62655RUSB Datasheet - Page 185

• Manufacturer Part Number: E62655RUSB
• Description: EMULATOR BASE H8S/2655R W/USB
• Manufacturer: Renesas Electronics America
• Type: Microcontrollerr

Specifications of E62655RUSB

• Contents: E6000 Emulator Unit and 4 Logic Probes
• For Use With/related Products: H8S/2655R
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Section 6 Bus Controller
6.3.4
Advanced Mode
The initial state of each area is basic bus interface, 3-state access space. The initial bus width is
selected according to the operating mode. The bus specifications described here cover basic items
only, and the sections on each memory interface (6.5, 6.6, and 6.7) should be referred to for
further details.
Area 0
Area 0 includes on-chip ROM, and in ROM-disabled expansion mode, all of area 0 is external
space. In ROM-enabled expansion mode, the space excluding on-chip ROM is external space.
When area 0 external space is accessed, the CS
signal can be output.
0
Either basic bus interface or burst ROM interface can be selected for area 0.
The size of area 0 is switched between 128 kbytes and 2 Mbytes according to the state of the ASS
bit.
Areas 1 and 6
In external expansion mode, all of areas 1 and 6 is external space.
When area 1 and 6 external space is accessed, the CS
and CS
pin signals respectively can be
1
6
output.
Only the basic bus interface can be used for areas 1 and 6.
The size of areas 1 and 6 is switched between 128 kbytes and 2 Mbytes according to the state of
the ASS bit.
Areas 2 to 5
In external expansion mode, all of areas 2 to 5 is external space.
When area 2 to 5 external space is accessed, signals CS
to CS
can be output.
2
5
Basic bus interface, DRAM interface, or PSRAM interface can be selected for areas 2 to 5. With
the DRAM interface, signals CS
to CS
are used as RAS signals.
2
5
The size of areas 2 to 5 is switched between 128 kbytes and 2 Mbytes according to the state of the
ASS bit.
Rev. 5.00 Sep 14, 2006 page 155 of 1060
REJ09B0331-0500