Atmel AT90USB162, User Manual

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embeddedglow.com DBAT90USB162 Enhanced
Development Board User’s Manual
USB signals are available via headers as follows:
Pin Signal Header
1 VCC
2 D-
3 D+
4 GND
Note: 1. Type B and Mini USB connectors cannot be used simultaneously.
2. New, unprogrammed AT90USB162 device is seen via USB as
“AT90USB162 DFU”. To use USB driver installation is required. USB
drivers can be downloaded from Atmel’s site:
http://atmel.com/ *. Third-
party drivers are also available on the net.
2.2.5. USB data lines transient voltage suppression
Data lines protection is available by using optional transils D2 and D3.
2.2.6. Power supply
Both 3.3 V and 5 V VCC power can be used, supplied from USB, built-in regulator,
or other source via VREG (P12).
I/O voltage / VCC source J5 J6 J7 J8 J9 J10
3 V I/O USB-powered - open short open open short
5 V I/O USB-powered - open open short open short
3.0 to 3.6 V I/O self-powered
(1)
short short short open open open
3.4 to 5.5 V I/O self-powered
(2)
open short open open short open
Note: 1. 3.0 V to 3.6 V can be supplied via VREG (P12) instead of using the built
in voltage regulator;
2. 3.4 V to 5.5 V can be supplied via VREG (P12) instead of using the built
in voltage regulator.