Programmer Controlled 'Target Vpp (Tvpp) Power Supply - 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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Current measurement accuracy +/- 6%
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4.5 Programmer controlled 'Target Vpp (TVPP) Power Supply'

The 'Programmer controlled Target Vpp Power Supply' is designed to apply a so-called
'Programmming voltage' or 'Vpp voltage' to a Target IC in order to force Target IC into
programming mode. The ICs which require this 'Vpp voltage' do not require much current, so this
power supply is only rated at 100mA maximum current.
Power supply features:
The Vpp voltage is used to force certain ICs into 'programming mode'
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The Vpp voltage is automatically set up by the selected device algorithm (not user-adjustable)
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The programmer can switch 6.5 to 13.5 V @ 100 mA to the Target System (UUT)
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Voltage accuracy: +/- 3% using factory calibrated voltages
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Device algorithms which require this Vpp voltage include:
Atmel - ATtiny TPI interface – High-Voltage Mode (+12V Vpp)
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Atmel – ATtiny 4-wire interface – High-Voltage Mode (+12V Vpp)
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TI – MSP430 – JTAG mode – Vpp required to blow the 'Security fuse' (+13.0V Vpp)
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Warning!
As the programmer is capable of applying a voltage higher than the normal 'Target Vcc'
voltage, this higher voltage could cause damage to the Target Board circuitry. Please ensure
that the Target Board has been designed to withstand the VPP voltage being applied during
programming.