Measuring The Target Vcc Voltage - Equinox Systems ISPnano I Series User Manual

Distributor of Equinox Technologies: Excellent Integrated System Limited
Datasheet of ISPNANO S3 KIT - ISP PORTABLE PROGRAMMER
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4.9 Measuring the Target Vcc voltage

It is a good idea to measure the 'Target Vcc' voltage using EDS as this checks that the wiring and
project settings are correct.
Instructions:
Follow the instructions in section 4.6 to set up the RELAY control etc.
•
Click this
button to
switch
RELAYs ON
Click the
•
Click the
•
below.
EDS should now report a valid voltage for 'Target Vcc'....
If EDS measures 0V.....
button in the 'External Target Vcc Switch' pane
button to measure the 'Target Vcc' voltage – see screenshot
The programmer measures the voltage
•
connected to the 'TVCC' pin on the 'Target
ISP Port' connector.
This should read back the voltage at which
•
the Target IC is running at.
The programmer may measure 0.00V in the
following conditions:
The RELAYs are OFF
•
No Target System is connected
•
There is no power on the Target System
•
The 'Target Vcc' is not connected
•
Click this button to
measure the 'Target Vcc'
voltage