Datasheet

50
32059L–AVR32–01/2012
AT32UC3B
9.9 USB Transceiver Characteristics
9.9.1 Electrical Characteristics
The USB on-chip buffers comply with the Universal Serial Bus (USB) v2.0 standard. All AC
parameters related to these buffers can be found within the USB 2.0 electrical specifications.
Table 9-25. Electrical Parameters
Symbol Parameter Conditions Min. Typ. Max. Unit
R
EXT
Recommended external USB series
resistor
In series with each USB pin with
±5%
39
Ω