E2, IE850A
2. Connecting the Emulator and User System
R20UT4140EJ0300 Rev.3.00
Page 15 of 41
Oct.09.20
2.3.6
Hot plug-in connection
Hot plug-in connection of the emulator may lead to a momentary drop in the power-supply voltage on the user
system. As shown in Figure 2-7, this effect can be reduced by placing a ferrite bead (or inductor) and relatively
large capacitor with low equivalent series resistance near the TVDD line of the connector for connection of the
emulator. However, this measure will not completely eliminate the voltage drop.
Figure 2-7 Circuit Configuration for Hot Plug-in
Hot plug-in connection can be used with the E2 emulator without the need for a hot plug-in adapter. For
details, refer to the E2 Emulator User’s Manual.
2.3.7
Isolator
For a debugging environment where there is a difference in potential between the GND of the user system
and that of the host PC, use the isolator (R0E000010ACB20) which is separately available from Renesas.
2.3.8
Small connector conversion adapter
A small connector conversion adapter (R0E000010CKZ11) is separately available from Renesas for user
system boards which are too small to mount the 14-pin connector that is the standard connector for the E2
emulator. By using the adapter, you can reduce the area taken up by the connector mounted on your system.
However, when you use the small connector conversion adapter, be aware that the pin assignments of the
connector differ from those of the standard interface connector for the E2 emulator.
2.3.9
34-pin to 14-pin conversion adapter
When the E2 emulator is connected to the 34-pin connector for use in external tracing, use the 34-pin to 14-
pin connector that comes with the emulation adapter. However, the E2 emulator is not capable of external
tracing.
