Datasheet

POWER OPTIONS
There a three power options with the Handheld Programmer
1) Programmer powers target
Plug into unpowered target. Connector pin 2 (Vcc) must be
connected to Vcc on your board and all 4 GND pins must be
connected to target ground. Use battery or external PSU. There is a
150mA current limit for powering the target.
In Software, select Vcc needed by target circuit on Target Voltage
screen (0-5V)
2) Target Powered and Vcc connected to ISP Header
If target Vcc is connected to ISP header – Pin 2, then Set voltage in
software, on Target Voltage Screen, to 0V (or less than target
voltage). All 4 GND pins must be connected and target must be
powered.
3) Target Powered and Vcc NOT connected to ISP header
If target Vcc line is NOT connected to Pin 2 – Vcc on ISP header,
In Software, select Vcc on Target Voltage screen (0-5V) to match
target circuit voltage. Do connect all four GND pins to target
ground. Power Target
Recommended ISP Circuit
This diagram shows a typical ISP circuit that will work with the Handheld
Programmer. Please read the notes for more detail.
RESET
MOSI
MISO
SCK
Header
VCC
GND
GND
GND
GND
AVR
MCU
RESET
VCC
GND
MISO
MOSI
1K Min
To Application circuit
SCK
3
1K - 10K
100nF
VCC
1
2
VCC
LED
4
VCC
5
Schottky
Diode
e.g. BAT 42
6
7
6