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4.0 Programmer / Target System Power
Supply Scenarios
4.1 Overview
The PPM3 Programmer Module can be powered in a number of different ways depending on the
application. Please refer to the table below to choose the required 'Power Supply Scenario':
Fig. 4.1 Power supply scenarios
#
Power Supply Scenario
1
Programmer supplies Controlled Voltage to the Target System
(@ user specified voltage and maximum current)
2
Target System powers the Programmer
(@ 5.0V only)
3
Programmer and Target System are independently powered
Please note:
The favoured method of powering is for the programmer to power the Target System as using this
method means that the sequencing of power is controlled from the Programming Project / Script. This
allows the PPM3 Programmer to be a completely self-contained Programming System with no
requirement for an external Target Power supply and the associated power sequencing system.
This section also details the actual power connectors, voltage range and earthing requirements of the
programmer. Please see the table below for the relevant section reference.
Fig. 4.1 Power supply scenarios
#
Power Supply Scenario
1
Power Connectors – Rear Panel
2
DC Power Cable Specification
3
Voltage Range
4
Programmer / Target System Power Supply Schematic Overview
5
Earthing requirements
Electrostatic Discharge (ESD) Warning!
There are a number of electrostatic issues which must be taken into account to avoid damage to the
programmer and/or the Target System during In-System Programming. Please see section 4.3.
56
PPM3 MKII Programmer - User Guide - V1.04 - 10
Refer to section
4.7
4.8
4.9
Refer to section
4.2
4.3
4.4
4.5
4.6
th
May 2008
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