Datasheet > XR21V1412

XR21V1412

更新时间： 2024-11-02 06:01:59

品牌	Logo	应用领域
艾科嘉 - EXAR		/
页数	文件大小	规格书
24页	698K
描述
2-CH FULL-SPEED USB UART

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中文翻译

获取价格

数据手册

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XR21V1412 数据手册

XR21V1412

2-CH FULL-SPEED USB UART

REV. 1.0.0

JUNE 2009

FEATURES

GENERAL DESCRIPTION

• USB 2.0 Compliant Interface

The XR21V1412 (V1412) is an enhanced 2-channel

Universal Asynchronous Receiver and Transmitter

(UART) with a USB interface. The USB interface is

fully compliant to Full Speed USB 2.0 specification

that supports 12 Mbps USB data transfer rate. The

USB interface also supports USB suspend, resume

and remote wakeup operations.

■ Supports 12 Mbps USB full-speed data rate

■ Supports USB suspend, resume and remote

wakeup operations

• Enhanced Features of each UART

■ Data rates up to 12 Mbps

■ Fractional Baud Rate Generator

■ 128 byte TX FIFO

The V1412 operates from an internal 48MHz clock

therefore no external crystal/oscillator is required like

previous generation UARTs. With the fractional baud

rate generator, any baud rate can accurately be

generated using the internal 48MHz clock.

■ 384 byte RX FIFO

■ 7, 8 or 9 data bits, 1 or 2 stop bits

■ Automatic Hardware (RTS/CTS or DTR/DSR)

The large 128-byte FIFO and 384-byte RX FIFO of

the V1412 helps to optimize the overall data

throughput for various applications. The Automatic

Transceiver Direction control feature simplifies both

the hardware and software for half-duplex RS-485

applications. If required, the multidrop (9-bit) mode

with automatic half-duplex transceiver control feature

Flow Control

■ Automatic Software (Xon/Xoff) Flow Control

■ Multidrop mode w/ Auto Half-Duplex

Transceiver Control

■ Multidrop mode w/ Auto TX Enable

■ Half-Duplex mode

further

simplifies

typical

multidrop

RS-485

■ Sleep Mode with Remote Wake-up

■ Selectable GPIO or Modem I/O

applications.

The V1412 operates from a single 2.97 to 3.63 volt

power supply and has 5V tolerant inputs. The V1412

is available in a 32-pin QFN package.

• Internal 48 MHz clock

• Single 2.97-3.63V power supply

• 5V tolerant inputs

Software drivers for Windows 2000, XP, Vista, and

CE, as well as Linux and Mac are supported for the

XR21V1412.

• 32-pin QFN package

• Virtual COM Port drivers

APPLICATIONS

■ Windows 2000, XP and Vista

■ Windows CE 4.2, 5.0, 6.0

■ Linux

• Portable Appliances

• External Converters (dongles)

• Battery-Operated Devices

• Cellular Data Devices

■ Mac

• Factory Automation and Process Controls

• Industrial applications

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (510) 668-7000 • FAX (510) 668-7017 • www.exar.com

12 3 4 5 6 7...24

中文翻译

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与XR21V1412相关器件

型号	品牌	获取价格	描述	数据表
XR21V1412_10	EXAR	获取价格	2-CH FULL-SPEED USB UART
XR21V1412IL32	EXAR	获取价格	2-CH FULL-SPEED USB UART
XR21V1412IL32-F	EXAR	获取价格	USB Bus Controller, CMOS, 5 X 5 MM, 0.90 MM HEIGHT, GREEN, MO-220VHHD-4, QFN-32
XR21V1412IL32TR-F	EXAR	获取价格	USB Bus Controller, CMOS, 5 X 5 MM, 0.90 MM HEIGHT, GREEN, MO-220VHHD-4, QFN-32
XR21V1414	EXAR	获取价格	4-CH FULL-SPEED USB UART
XR21V1414_10	EXAR	获取价格	4-CH FULL-SPEED USB UART
XR21V1414IM-0B-EB	EXAR	获取价格	4-CH FULL-SPEED USB UART
XR21V1414IM48	EXAR	获取价格	4-CH FULL-SPEED USB UART
XR21V1414IM48-F	EXAR	获取价格	4-CH FULL-SPEED USB UART
XR21V1414IM48TR-F	EXAR	获取价格	Serial I/O Controller, 4 Channel(s), 1.5MBps, CMOS, PQFP48, 7 X 7 MM, 1 MM HEIGHT, GREEN,

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