Datasheet

13
4337K–USB–04/08
AT89C5130A/31A-M
4.2 PCB Recommandations
Figure 4-2. USB Pads
Figure 4-3. USB PLL
D+
VRef
D-
USB Connector
Wires must be routed in Parallel and
Components must be
If possible, isolate D+ and D- signals from other signals
with ground wires
must be as short as possible
close to the
microcontroller
PLLFAVss
Components must be
Isolate filter components
with a ground wire
microcontroller
close to the
C2 C1
R