ISPNANO S3 KIT Equinox Technologies, ISPNANO S3 KIT Datasheet - Page 86

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ISPNANO S3 KIT

Manufacturer Part Number
ISPNANO S3 KIT
Description
ISP PORTABLE PROGRAMMER
Manufacturer
Equinox Technologies
Series
-r
Type
Portable ISPr
Datasheet

Specifications of ISPNANO S3 KIT

Contents
Programmer, Cables, Power Supply
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
For Use With/related Products
ATMEL AT90S, AT90CAN, AT90USB, ATtiny, ATmega, AT91SAM7xx, Zensys Z-Wave, 24xxx Serial EEPROM's
Other names
483-1022
ISPNANO S3 KIT
Q5595084
T1310537
4.5 Switching EXTERNAL VCC to the Target System
4.5.1 Overview
The ISPnano programmer features a special ‘External VCC Switch’ circuit which allows an ‘External
Voltage (V_EXT)’ in the range of 1.6V – 24V to be switched through the programmer to the Target
System under project control. This feature is useful when the Target System features a ‘Voltage
Regulator Circuit’ which needs to be powered from a higher voltage than +5V. In order to power
many Target Systems, it is necessary to apply a voltage of eg. 7 – 24V to the input of the Target
System regulator circuit.
The diagram below shows a typical example where an external power supply is switched to the
Target System through the programmer.
Fig. 4.5.1. ISPnano – Powering Target System using External Switched Voltage
70
An ‘External’ voltage ‘VEXT’ in the range of 1.6 – 24.0V is fed into the EXT-VCC-IN
connector of the programmer from an external power supply.
This voltage is then switched by the ‘External Vcc Switch’ inside the programmer to the EXT-
VCC-OUT pins on the ‘Target ISP Port’ of the programmer.
Power Supply
1.6 - 24.0V
External
Target
Power Supply
Programmer
9.0 - 24.0V
ISPnano Series Programmer - User Manual – V1.11 – 12
Measure
V
SWITCH
EXT DC
TARGET
Programmer
I/O Lines
to Target
System
Circuit
Driver
Line
Target
IC
Voltage Regulator
Target
circuit
th
May 2011

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