Atmel STK200, Manual

Page: 24 / 40

Device Programming
7-2 STK200 Starter Kit
40-pin A/D parts have different pinouts from the digital only 40-pin parts. Make sure you
have inserted your device in the correct 40-pin socket on the board. The board has
“A/D” and “Digital” written inside the sockets.
Note:
Do not insert a device in more than one socket at a time otherwise program-
ming errors will occur.
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 = 5V, insert jumper JP2 – jumper closed
For Brown-Out = 3.3V, 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 5V, then the device will be held in reset and will not program. See the section “Brown-
Out Detector” on page 8-1 for more details.
7.3 Power and Lead
Connections
The 10-way programming lead is inserted in the box header—the key-way ensures cor-
rect orientation. The computer connections are shown in the section “Connecting the
Hardware” on page 3-1.
The power supply 9-15V DC or 7-12V AC is plugged into the power connector 5.5/2.1
Barrel.
The “Power On/Off” switch is located next to the power connector. Insert the device
before switching the power on. The power on LED should light when the power is cor-
rectly applied.
Your hardware is now ready for programming. Refer to “How to use the Software” on
page 6-1 for details of programming operations.
7.4 Programming 8-
Pin Parts
As these parts are only 8-pin, the clock inputs use two of the port pins. These pins can
be used as port pins on some devices if the device is set to run on internal clock. The
internal clock is set by programming a fuse but this may not be set on new parts, so a
jumper is supplied to enable the device to be programmed with external clock.
We recommend that the jumper labeled “Clock Sel” is set to “EXT” when programming
new parts. The fuse setting can then be read and set to internal clock if the port pins are
required, and the jumper setting can then be changed to “INT” for internal clock opera-
tion.
Note:
If the internal clock fuse is set, the internal clock will operate even if an external
clock is supplied.
If difficulties are found in programming these parts, remove the jumper set labeled “Port
B”. (Bits 0 to 2 are the programming lines.)