Atmel STK525, Hardware User'S Manual

Page: 19 / 40

Using the STK525
STK525 Hardware User Guide 2-19
7608A–AVR–04/06
2.7 STK500 Resources
Figure 2-18 . Connecting STK525 to the STK500 Board
Note: Caution: Do not mount an AVR microcontroller on the STK500 board when STK525 is
plugged on STK500.
2.7.1 Supply Voltage from STK500
The AVR supply voltage coming from STK500 (VTG) can also be controlled from AVR
Studio®.
The supply voltage coming from STK500 is controlled by power supply circuitry of
the STK525. Refer to
Table 2-1 on page 8
to configure “Vcc Source” jumper.
2.7.2 Analog Reference Voltage from STK500
The AVR Analog Reference Voltage coming from STK500 (REF) can also be controlled
from AVR Studio®.
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