Using the STK526
2.2.4
2.3
2.3.1
2.3.2
2.3.3
“POWER-ON“ LED
RESET
Power-on RESET
RESET Push Button
STK500 RESET
The POWER-ON LED is lit whenever power is applied to STK526 regardless of the
power supply source and the voltage settings.
Figure 2-6 . “VCC-ON” LED
Although the AT90USB82/162 has its on-chip RESET circuitry (c.f. AT90USB82/162
Datasheet, section “System Control and Reset), the STK526 provides the
AT90USB82/162 a RESET signal which can come from 3 different sources:
The power supply rise will conduce to an on-chip power-on RESET.
By pressing the RESET push button on the STK526, a warm RESET of the
AT90USB82/162 is performed.
Figure 2-7 . RESET Push Button (RST) Implementation
2-10
7709B–AVR–07/08
STK526 rev. B Hardware User Guide
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