USB2SER datasheet(5/28 Pages) FREESCALE

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USB2SER Datasheet(PDF) 5 Page - Freescale Semiconductor, Inc

Part #	USB2SER

Description	USB to UART Application Specific IC Single chip USB to UART Data Transfer

PDF	28 Pages

Scroll/Zoom	100%

Manufacturer	FREESCALE [Freescale Semiconductor, Inc]

Direct Link	http://www.freescale.com

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5 / 28 page

Pins and Connections

USB2SER Data Sheet, Rev. 0

Freescale Semiconductor

1.3

Recommended system connections

Figure 3. System connections working at 5 V

Figure 4. System connections working at 3 V

1 RC filter on RESET is recommended for EMC-sensitive applications.

2 RPUDP is shown for full-speed USB only. The diagram shows a configuration where the on-chip regulator and RPUDP are enabled. The voltage

regulator output is used for RPUDP. RPUDP can optionally be disabled if using an external pullup resistor on USBDP.

3 VBUS is a 5.0 V supply from upstream port that can be used for USB operation.

4 USBDP and USBDN are powered by the 3.3 V regulator.

5 When using internal VUSB33 as supply, there needs to be an external cap.

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