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参数资料
| 型号： | ST16C2550IJ44-F |
| 厂商： | Exar Corporation |
| 文件页数： | 35/37页 |
| 文件大小： | 0K |
| 描述： | IC UART FIFO 16B DUAL 44PLCC |
| 标准包装： | 27 |
| 特点： | * |
| 通道数： | 2，DUART |
| FIFO's： | 16 字节 |
| 规程： | RS232，RS485 |
| 电源电压： | 2.97 V ~ 5.5 V |
| 带故障启动位检测功能： | 是 |
| 带调制解调器控制功能： | 是 |
| 带CMOS： | 是 |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 44-LCC（J 形引线） |
| 供应商设备封装： | 44-PLCC（16.59x16.59） |
| 包装： | 管件 |
| 其它名称： | 1016-1562-5 ST16C2550IJ44-F-ND |
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ST16C2550
7
REV. 4.4.1
2.97V TO 5.5V DUART WITH 16-BYTE FIFO
1.0 PRODUCT DESCRIPTION
The ST16C2550 (C2550) 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 C2550 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 C2550 represents such an integration with greatly enhanced features. The C2550 is fabricated with an
advanced CMOS process.
The C2550 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 C2550 is designed to work with high speed modems and
shared network environments, that require fast data processing time. Increased performance is realized in the
C2550 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 C2550, 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 C2550 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 C2550 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 C2550 is software compatible with the previous generation, ST16C2450.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ST16C2550IJ44TR-F | 制造商:Exar Corporation 功能描述:UART 2-CH 16Byte FIFO 3.3V/5V 44-Pin PLCC T/R 制造商:Exar Corporation 功能描述:ST16C2550IJ44TR-F |
| ST16C2550IP40 | 功能描述:UART 接口集成电路 DUAL UART W/16 BYTE FIFO RoHS:否 制造商:Texas Instruments 通道数量:2 数据速率:3 Mbps 电源电压-最大:3.6 V 电源电压-最小:2.7 V 电源电流:20 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:LQFP-48 封装:Reel |
| ST16C2550IQ48 | 制造商:Rochester Electronics LLC 功能描述: |
| ST16C2550IQ48-F | 功能描述:UART 接口集成电路 2.97V-5.5V 16B FIFO temp -45 to 85C;UART RoHS:否 制造商:Texas Instruments 通道数量:2 数据速率:3 Mbps 电源电压-最大:3.6 V 电源电压-最小:2.7 V 电源电流:20 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:LQFP-48 封装:Reel |
| ST16C2550IQ48TR-F | 功能描述:UART 接口集成电路 DUAL UART W/16BYTE FIFO RoHS:否 制造商:Texas Instruments 通道数量:2 数据速率:3 Mbps 电源电压-最大:3.6 V 电源电压-最小:2.7 V 电源电流:20 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:LQFP-48 封装:Reel |
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