ATSTK526 Atmel, ATSTK526 Datasheet - Page 13

• Manufacturer Part Number: ATSTK526
• Description: KIT STARTER FOR AT90USB82/162
• Manufacturer: Atmel
• Series: AVR®r
• Type: MCUr

Specifications of ATSTK526

• Contents: Starter Kit Board, Power Supply, Cable and Software
• Processor To Be Evaluated: AT90USB82/162
• Data Bus Width: 8 bit
• Interface Type: RS-232, USB
• Silicon Manufacturer: Atmel
• Core Architecture: AVR
• Silicon Core Number: AT90USB82, AT90USB162
• Kit Contents: Board Docs
• Rohs Compliant: Yes
• For Use With/related Products: AT90USB162, AT90USB82
• For Use With: ATSTK500 - PROGRAMMER AVR STARTER KIT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

7709B–AVR–07/08
Using the STK526
2-12
VBUS Power Source Moreover, even if not selected as primary power source, VBUS powers the on-board
VBUS Detection The board also implements a VBUS detection on a generic I/O. A low-power (50µA)
voltage divider (/2) is connected from VBUS to PortC bit 2 pin. The VBUS presence is
detected with a high level on the MCU pin.
3.3V regulator (through a diode to avoid current being supplied to USB Host) in order to
get 3V3 voltage in any condition (this allows to power the dataflash at any time, or to
allow a USB Bus-powered operation with all the board at 3.3V.
However, this feature can make current flowing from VBUS to some board peripherals
even if an alternate power source is used to power the board. That may lead to
unwanted extra-consumption, so it can be disabled by cutting the configuration pad.
Figure 2-10 . Configuration Pad Location
Note:
See Section “Configuration Pads”, page 24 for details.
STK526 rev. B Hardware User Guide