USB333X datasheet(7/85 Pages) MICROCHIP

部件名	USB333X

功能描述	Industry?셲 Smallest Hi-Speed USB Transceiver with Single Supply Operation

PDF	85 Pages

Scroll/Zoom	100%

制造商	MICROCHIP [Microchip Technology]

网页	http://www.microchip.com

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7 / 85 page

 2009 - 2015 Microchip Technology Inc.

DS00001880A-page 7

USB333x

The USB333x includes an integrated 3.3V LDO regulator that is used to generate 3.3V from power applied to the VBAT

pin. The voltage on the VBAT pin can range from 3.0 to 5.5V. The regulator dropout voltage is less than 100mV which

allows the PHY to continue USB signaling when the voltage on VBAT drops to 3.0V. The USB transceiver will continue

to operate at lower voltages, although some parameters may be outside the limits of the USB-IF specification for Full

Speed USB operation. The VBAT and VDD33 pins should never be connected together.

In USB UART mode, the USB333x DP and DM pins are redefined to enable pass-through of asynchronous serial data.

The USB333x will enter UART mode when programmed, as described in Section 6.7.1.

1.3

Reference Documents

UTMI+ Low Pin Interface (ULPI) Specification, Revision 1.1

Universal Serial Bus Specification, Revision 2.0

On-The-Go Supplement to the USB2.0 Specification, Revision 1.3

On-The-Go Supplement to the USB2.0 Specification, Revision 2.0

USB Battery Charging Specification, Revision 1.2

USB333X 数据表(PDF) 7 Page - Microchip Technology