具有± 15kV HBM静电放电对USBD + / USBD -
USB 2.0 compatible interface
Supports a USB full-speed data rate of 12 Mbps
Supports USB suspend, resume and remote wake-up operations
Enhanced UART functionality
Data transfer rates up to 12 Mbps
Decimal baud rate generator
128 bytes of send FIFO
3.84 bytes receive FIFO
7, 8 or 9 data bits
1 or 2 stop bits
Odd, even, marked, spatial or no checksum
Automatic hardware (RTS/CTS or DTR/DSR) flow control
Automatic software (XON/XOFF) flow control
Multipoint mode
Automatic transceiver control
Half-duplex mode
GPIO or modem optional I/O
The internal 48 MHz clock can be programmed down to a 6 MHz clock divisor
Single 5V power supply
16-pin QFN package
Virtual COM port driver
Windows 7, 2000, XP and Vista
Windows CE 4.2, 5.0, 6.0
Linux
apple
apply
Portable appliances
External Converter (Dongle)
Battery-powered devices
Cellular data devices
Factory automation and process control
Industrial applications
Exar's I/O Lab - Easy-to-use online programming design tool
User manual
OTP programming tools
illustrate
The XR21B1411 (B1411) is an enhanced universal asynchronous receiver and transmitter and a USB interface (UART).The USB interface is fully compliant with the full-speed USB 2.0 specification and supports a USB data transfer rate of 12 Mbps.The USB interface also supports USB suspend, resume and remote wake-up operations.
The B1411 uses an internal clock that can be programmed to 6, 12, 24 or 48 MHz.Therefore, there is no need for an external crystal/oscillator, and a UART of the previous generation is required.With the fractional baud rate generator, arbitrary baud rates up to 12 Mbps can be accurately generated using an internal clock.
The B1411 with a large transmit FIFO of 128 bytes and a receive FIFO of 384 bytes helps optimize the overall data throughput of various applications.The transceiver's automatic directional control simplifies hardware and software for half-duplex RS-485 applications.If required, multipoint (9-bit) with automatic half-duplex transceiver control function mode further simplifies typical multipoint RS-485 applications.
Vendor ID, product ID, bus power mode, self-powered mode, remote wake-up support or maximum power consumption values, and default baud rate settings can be programmed using OTP via USBD+/USBD-pinboards.
The B1411 operates from a single 5V supply in a 16-pin QFN package.
软件驱动程序为Windows 7，2000和XP，Vista和CE认证，以及Linux和Mac是支持的XR21B1411。