ISPJUNO - Portable ISP Programmer - User Guide V0.84 – 17/04/20
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4.3.5 Configuring the programmer to power the Target System
This section explains how to configure the programmer so the programmer powers the
‘Target
System’
.
In the
‘Power supply settings’
tab in the
‘programming project’
…
1. Select the radio-button
‘Programmer is powering the target system’
….
2. Select the required
‘TVCC – Target output voltage’
…
•
Click the
‘Voltage’
field
•
Now select the required voltage from the list displayed: 3.0V, 3.3V, 4.7V or 5.0V.
•
The
‘Voltage’
field will default to the lowest voltage allowed for the selected
‘Target device /
IC’
.
When the
‘programming project’
is executed, the programmer will generate the selected voltage
and this voltage will be output from the programmer
‘TVCC’
pin.
Important note:
The selected
‘Target voltage’
also sets the programmer
‘Line driver’
voltage.
So the
‘programming signals’
will now swing between 0V and the specified voltage.
e.g. If you select 3.3V, then the programmer
‘programming signals’
will swing between 0V and
3.3V.
