Integrated circuits, Transistor, Semiconductors Free Datasheet Search and Download Site


XR21V1412

  

Datasheet

Match, Like XR21V1412
Start with XR21V1412I* XR21V1412_*
End N/A
Included N/A
View Details    
XR21V1412 [2-CH FULL-SPEED USB UART ]

other parts : XR21V1412IL32 

Exar
Exar Corporation

GENERAL DESCRIPTION
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.
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.
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 further simplifies typical multidrop RS-485 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.
Software drivers for Windows 2000, XP, Vista, and CE, as well as Linux and Mac are supported for the XR21V1412.

FEATURES
● USB 2.0 Compliant Interface
   ■ 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
   ■ 384 byte RX FIFO
   ■ 7, 8 or 9 data bits, 1 or 2 stop bits
   ■ Automatic Hardware (RTS/CTS or DTR/DSR)
      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
   ■ Sleep Mode with Remote Wake-up
   ■ Selectable GPIO or Modem I/O
● Internal 48 MHz clock
● Single 2.97-3.63V power supply
● 5V tolerant inputs
● 32-pin QFN package
● Virtual COM Port drivers
   ■ Windows 2000, XP and Vista
   ■ Windows CE 4.2, 5.0, 6.0
   ■ Linux
   ■ Mac

APPLICATIONS
● Portable Appliances
● External Converters (dongles)
● Battery-Operated Devices
● Cellular Data Devices
● Factory Automation and Process Controls
● Industrial applications

View
XR21V1412IL32-F [2-CH FULL-SPEED USB UART ]

other parts : XR21V1412IL32TR-F  XR21V1412_13 

Exar
Exar Corporation

GENERAL DESCRIPTION
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.
The V1412 operates from an internal 48MHz clock therefore no external crystal/oscillator is required as in previous generation UARTs. With the fractional baud rate generator, any baud rate can accurately be generated using the internal 48MHz clock.
The large 128-byte TX FIFO and 384-byte RX FIFO of the V1412 helps to optimize the overall data throughput for various applications. If required, the multidrop mode and automatic RS-485 half-duplex direction control feature further simplifies typical multidrop RS-485 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.
WHQL certified software drivers for Windows 2000, XP, Vista, 7, 8, and CE, as well as Linux and Mac are supported for the XR21V1412.

FEATURES
● USB 2.0 Compliant, Full-Speed (12 Mbps)
   ■ Supports USB suspend, resume and remote
      wakeup operations
   ■ ± 5 kV HBM ESD protection on USB data pins
   ■ ± 2 kV HBM ESD protection on all other pins
● Enhanced Features of each UART
   ■ UART data rates up to 12 Mbps
   ■ Fractional Baud Rate Generator
   ■ 128 byte TX FIFO
   ■ 384 byte RX FIFO
   ■ 7, 8 or 9 data bits
   ■ 1 or 2 stop bits
   ■ Odd, even, mark, space or no parity
   ■ Automatic Hardware (RTS/CTS or DTR/DSR)
      Flow Control
   ■ Automatic Software (Xon/Xoff) Flow Control
   ■ Multidrop mode
   ■ Auto RS-485 Half-Duplex Control
   ■ Half-Duplex mode
   ■ Selectable GPIO or Modem I/O
● Internal 48 MHz clock
● Single 3.3V power supply
● 5V tolerant GPIO inputs
● 32-pin QFN package
● Virtual COM Port WHQL certified drivers
   ■ Windows 2000, XP, Vista, Win7 and Win8
   ■ Windows CE 4.2, 5.0, 6.0, 7.0
   ■ Linux
   ■ Mac

APPLICATIONS
● Portable Appliances
● External Converters (dongles)
● Battery-Operated Devices
● Cellular Data Devices
● Factory Automation and Process Controls
● Industrial applications

View
XR21V1412IL-0B-EB [XR21V1412 RS-232 EVALUATION BOARD USER’S MANUAL ] ETC
Unspecified

INTRODUCTION
This user’s manual is for the low cost XR21V1412 RS-232 evaluation board. The XR21V1412 is in the RS-232 mode when it is shipped from the factory.

EVALUATION BOARD OVERVIEW
A block diagram of the evaluation board is shown in Figure 1 below..

The primary devices on the XR21V1412 evaluation board are all Exar devices.
• The XR21V1412 is an enhanced 2-ch USB UART.
• The SP6260 is an Exar LDO that regulates the 5V from VBUS to 3.3V that is used
   as the supply voltage of the SP3245 and for the VCC of the XR21V1412.
• The SP3245 is Exar’s RS-232 serial transceiver.

View
1
Share Link : 

HOME




Language : 한국어     日本語     русский     简体中文     español
@ 2015 - 2018  [ Home ][ Privacy Policy ] [ Request Datasheet ] [ Contact Us ]