Atmel megaAVR, Getting Started

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megaAVR™ Starter Kit Manual 7-1
Section 7
Programming Using the Board
7.1 Device
Orientation
Before programming a device using the programming module, the device adapter must
be inserted correctly into the programming unit. The adapter itself has a corner cut-off,
which locates pin 1 of the device and matches the marking on the main unit. This
adapter should be prefitted, but can be replaced if the device programming life is
exceeded—refer to your supplier to obtain a new device adapter.
The orientation of the device is vitally important. If you put it in the wrong way then you
may damage the device. DO NOT PLUG A DEVICE ADAPTER IN WITH THE POWER
SWITCHED ON or you may damage it. Similarly, never remove the device adapter with
the power on.
7.2 Voltage
Selection
Jumper JP1 is used to select either 3.3V or 5V programming.
For V
CC
= 5V, remove jumper JP1 - jumper open
For V
CC
= 3.3V, insert JP1 - jumper closed
Jumper JP2 is used to set Brown-Out detector voltage.
For Brown-Out = 4.5V, insert jumper JP2 - jumper closed
For Brown-Out = 2.9V, remove jumper JP2 - jumper open
This should be set to the same voltage as V
CC
. If V
CC
is set to 3.3V and Brown-Out is set
to 4.5V, then the device will be held in reset and will NOT program. See “Brown-Out
Detector” on page 8-1 for more details.
JP1
JP2