Emulation Adapter
Notes
R20UT5180EJ0110 Rev. 1.10
Page 36 of 63
Sep.12.22
4.2
Notes on Differences between the Actual Device and the Emulation
Adapter
4.2.1
Current Drawn
When the emulation adapter is in use, current drawn may differ from that for the actual device. Thus,
the customer should use the actual device in a final evaluation before mass production and judge the
suitability of adopting the product on that basis.
4.2.2
Oscillator
The emulation adapter does not support clock input from an oscillator on the target system. The main
clock oscillator on the emulation adapter is used as the main clock.
Proceed with final evaluation to confirm operation of the target system after mounting the actual device
and while using the oscillator on the target system.
4.2.3
Power-Supply Voltages
The debug chip mounted on the emulation adapter basically operates with the power supplied from the
target system. However, note that there are differences in the following power-supply voltages.
•
EMUVDD and EMUVCC are generated on the emulation adapter.
•
Whether the power-supply voltage generated on the emulation adapter or that for the target system
is used for VDD is selectable by the setting of JP5 on the emulation adapter.
When you use the power supply from the target system, note that transient drops in the power-
supply voltage may occur.
4.2.4
VSS Pins for Each Power-Supply Voltage
AxVSS, ADSVSS, AFCVSS, SVRAVSS, SVRDRVSS, and VSS are connected to a common GND in
the emulation adapter.
4.2.5
AWOVCL, ADSVCL, GETH0VCL, GETH1VCL, and RAMSVCL Pins
Stabilizing capacitors are connected to the stabilizing capacitor connection pins (AWOVCL, ADSVCL,
GETH0VCL, GETH1VCL, and RAMSVCL) on the emulation adapter. These pins are not connected on
the target system.
4.2.6
A/D Converter
Results from the A/D converter may differ from those on the actual device because of the exchange
adapter etc. between the debug chip and the target system.
