AT89C5131A-S3SUM(2008) Ver la hoja de datos (PDF) - Atmel Corporation

Número de pieza

componentes Descripción

Fabricante

AT89C5131A-S3SUM
(Rev.:2008)

8-bit Flash Microcontroller with Full Speed USB Device

Atmel Corporation 

AT89C5130A/31A-M

4.2 PCB Recommandations

Figure 4-2. USB Pads

VRef

D+

D-

Components must be

close to the

microcontroller

Wires must be routed in Parallel and

must be as short as possible

USB Connector

If possible, isolate D+ and D- signals from other signals

with ground wires

Figure 4-3. USB PLL

Components must be

close to the

microcontroller

AVss PLLF

Isolate filter components

with a ground wire

13

4337K–USB–04/08

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