參數(shù)資料
型號(hào)： XR16C2550IJ-F
廠商： Exar Corporation
文件頁(yè)數(shù)： 34/37頁(yè)
文件大?。?/td> 0K
描述： IC UART FIFO 16B DUAL 44PLCC
標(biāo)準(zhǔn)包裝： 27
特點(diǎn)： *
通道數(shù)： 2，DUART
FIFO's： 16 字節(jié)
規(guī)程： RS232，RS485
電源電壓： 2.97 V ~ 5.5 V
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： 44-LCC（J 形引線）
供應(yīng)商設(shè)備封裝： 44-PLCC（16.59x16.59）
包裝： 管件
XR16C2550
6
2.97V TO 5.5V DUART WITH 16-BYTE FIFO
REV. 1.0.2
1.0
PRODUCT DESCRIPTION
The XR16C2550 (2550) integrates the functions of two 16C550 Universal Asynchrounous Receiver and
Transmitter (UART). Each UART is independently controlled having its own set of device configuration
registers. The 2550 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 stops 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 2550 represents such an integration with greatly enhanced features. The 2550 is fabricated with an
advanced CMOS process.
The 2550 is an upward solution that provides a dual UART capability with 16 bytes of transmit and receive
FIFO memory, instead of none in the 16C2450. The 2550 is designed to work with high speed modems and
shared network environments, that require fast data processing time. Increased performance is realized in the
2550 by the transmit and receive FIFO’s. This allows the external processor to handle more networking tasks
within a given time. For example, the ST16C2450 without a receive FIFO, will require unloading of the RHR in
93 microseconds (This example uses a character length of 11 bits, including start/stop bits at 115.2 Kbps). This
means the external CPU will have to service the receive FIFO less than every 100 microseconds. However
with the 16 byte FIFO in the 2550, the data buffer will not require unloading/loading for 1.53 ms. This increases
the service interval giving the external CPU additional time for other applications and reducing the overall
UART interrupt servicing time. In addition, the 4 selectable receive FIFO trigger interrupt levels is uniquely
provided for maximum data throughput performance especially when operating in a multi-channel
environment. The FIFO memory greatly reduces the bandwidth requirement of the external controlling CPU,
increases performance, and reduces power consumption.
The 2550 is capable of operation up to 4 Mbps with a 64 MHz external clock. With a crystal or external clock
input of 14.7456 MHz the user can select data rates up to 921.6 Kbps.
The rich feature set of the 2550 is available through internal registers. Selectable receive FIFO trigger levels,
selectable TX and RX baud rates, and modem interface controls are all standard features. Following a power
on reset or an external reset, the 2550 is software compatible with the previous generation, ST16C2450.
相關(guān)PDF資料
PDF描述
XR16C2850IM-F IC UART FIFO 128B DUAL 48TQFP
XR16C2852IJ-F IC UART FIFO 128B 44PLCC
XR16C850IMTR-F IC UART FIFO 128B 48TQFP
XR16C854IQ-F IC UART FIFO 128B QUAD 100QFP
XR16C864IQ-F IC UART FIFO 128B QUAD 100QFP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XR16C2550IM 制造商:Exar Corporation 功能描述:
XR16C2550IM-F 功能描述:UART 接口集成電路 UART 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
XR16C2550IMTR-F 功能描述:UART 接口集成電路 UART 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
XR16C2550IP 制造商:EXAR 制造商全稱:EXAR 功能描述:2.97V TO 5.5V DUART WITH 16-BYTE FIFO
XR16C2552 制造商:EXAR 制造商全稱:EXAR 功能描述:2.97V TO 5.5V DUAL UART WITH 16-BYTE FIFO
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*