REV. 1.0.2 1.0 PRODUCT DESCRIPTION The XR16V2650 (V2650) provides serial asynchronous rece" />
參數(shù)資料
型號(hào)： XR16V2650IM-F
廠商： Exar Corporation
文件頁數(shù)： 44/47頁
文件大?。?/td> 0K
描述： IC UART FIFO 32B DUAL 48TQFP
標(biāo)準(zhǔn)包裝： 250
特點(diǎn)： *
通道數(shù)： 2，DUART
FIFO's： 32 字節(jié)
規(guī)程： RS232，RS422
電源電壓： 2.25 V ~ 3.6 V
帶自動(dòng)流量控制功能： 是
帶IrDA 編碼器/解碼器： 是
帶故障啟動(dòng)位檢測(cè)功能： 是
帶調(diào)制解調(diào)器控制功能： 是
帶CMOS： 是
安裝類型： 表面貼裝
封裝/外殼： 48-TQFP
供應(yīng)商設(shè)備封裝： 48-TQFP（7x7）
包裝： 托盤
XR16V2650
6
HIGH PERFORMANCE DUART WITH 32-BYTE FIFO
REV. 1.0.2
1.0 PRODUCT DESCRIPTION
The XR16V2650 (V2650) provides serial asynchronous receive data synchronization, parallel-to-serial and
serial-to-parallel data conversions for both the transmitter and receiver sections. These functions are
necessary for converting the serial data stream into parallel data that is required with digital data systems.
Synchronization for the serial data stream is accomplished by adding start and stop bits to the transmit data to
form a data character (character orientated protocol). Data integrity is ensured by attaching a parity bit to the
data character. The parity bit is checked by the receiver for any transmission bit errors. The electronic circuitry
to provide all these functions is fairly complex especially when manufactured on a single integrated silicon
chip. The V2650 represents such an integration with greatly enhanced features. The V2650 is fabricated with
an advanced CMOS process.
Enhanced Features
The XR16V2650 (V2650) integrates the functions of 2 enhanced 16C650A Universal Asynchronous Receiver
and Transmitter (UART). Each UART is independently controlled its own set of device configuration registers.
The configuration registers set is 16550 UART compatible for control, status and data transfer. Additionally,
each UART channel has automatic RTS/CTS hardware flow control, automatic Xon/Xoff and special character
software flow control, infrared encoder and decoder (IrDA ver 1.0), programmable baud rate generator with a
prescaler of divide by 1 or 4, and data rate up to 16 Mbps at 3.3V with 4X sampling clock rate. The XR16V2650
is a 2.25 V to 3.6 V device with 5 volt tolerant inputs.
The rich feature set of the V2650 is available through internal registers. Selectable transmit and receive FIFO
trigger levels, programmable TX and RX baud rates, and modem interface controls are all standard features.
Following a power on reset or an external reset, the V2650 is functionally and software compatible with the
ST16C2550, XR16L2550 and XR16V2550.
Data Rate
The V2650 is capable of operation up to 16 Mbps at 3.3V and 12.5 Mbps at 2.5V with 4X sampling rate. The
device can operate with an external 32 MHz crystal at 2.5V on pins XTAL1 and XTAL2, or external clock source
of up to 64 MHz on XTAL1 pin. With a typical crystal of 14.7456 MHz and through a software option, the user
can set the prescaler bit for data rates of up to 3.68 Mbps.
The rich feature set of the V2650 is available through the internal registers. Automatic hardware/software flow
control, selectable transmit and receive FIFO trigger levels, programmable TX and RX baud rates, infrared
encoder/decoder interface, modem interface controls, and a sleep mode are all standard features.
Following a power on reset or an external reset, the V2650 is software compatible with previous generation of
UARTs, 16C450, 16C550 and 16C650A as well as the 16C850.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XR16V2650IMTR-F 制造商:Exar Corporation 功能描述:UART 2-CH 32Byte FIFO 2.5V/3.3V 48-Pin TQFP T/R 制造商:Exar Corporation 功能描述:XR16V2650IMTR-F
XR16V2651 制造商:EXAR 制造商全稱:EXAR 功能描述:HIGH PERFORMANCE DUART WITH 32-BYTE FIFO AND POWERSAVE
XR16V2651_07 制造商:EXAR 制造商全稱:EXAR 功能描述:HIGH PERFORMANCE DUART WITH 32-BYTE FIFO AND POWERSAVE
XR16V2651IL 制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述:
XR16V2651IL-0B-EB 功能描述:UART 接口集成電路 Supports V2651 32pin QFN, PCI Interface RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel
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