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參數(shù)資料
| 型號： | XR16V2551IL-F |
| 廠商： | Exar Corporation |
| 文件頁數(shù)： | 47/49頁 |
| 文件大小： | 0K |
| 描述： | IC UART FIFO 16B DUAL 32QFN |
| 標準包裝： | 490 |
| 特點： | * |
| 通道數(shù)： | 2，DUART |
| FIFO's： | 16 字節(jié) |
| 規(guī)程： | RS232，RS422 |
| 電源電壓： | 2.25 V ~ 3.6 V |
| 帶自動流量控制功能： | 是 |
| 帶IrDA 編碼器/解碼器： | 是 |
| 帶故障啟動位檢測功能： | 是 |
| 帶調制解調器控制功能： | 是 |
| 帶CMOS： | 是 |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 32-VFQFN 裸露焊盤 |
| 供應商設備封裝： | 32-QFN 裸露焊盤（5x5） |
| 包裝： | 托盤 |
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XR16V2551
7
REV. 1.0.3
HIGH PERFORMANCE DUART WITH 16-BYTE FIFO AND POWERSAVE FEATURE
1.0 PRODUCT DESCRIPTION
The XR16V2551 (V2551) integrates the functions of 2 enhanced 16C550 Universal Asynchronous Receiver
and Transmitter (UART). Its features set is compatible to the XR16V2550 and XR16V2650 devices but offers
Intel or Motorola data bus interface and PowerSave to isolate the data bus interface during Sleep mode.
Hence, the V2551 adds 3 more inputs: 16/68# and PwrSave pins. Each UART is independently controlled by
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), and programmable fractional baud rate generator with a prescaler of divide by 1 or 4. The
XR16V2551 can operate from 2.25V to 3.6V with 5 volt tolerant inputs. The V2551 is fabricated with an
advanced CMOS process.
Enhanced Features
The V2551 DUART provides a solution that supports 16 bytes of transmit and receive FIFO memory. The
V2551 is designed to work with low supply voltage and high performance data communication systems, that
require fast data processing time. In addition, the selectable FIFO trigger level interrupt and automatic
hardware/software flow control is uniquely provided for good data throughput performance especially when
operating in a multi-channel system.
Data Bus Interface, Intel or Motorola Type
The V2551 provides a single host interface for the 2 UARTs and supports Intel or Motorola microprocessor
(CPU) data bus interface. The Intel bus compatible interface allows direct interconnect to Intel compatible type
of CPUs using IOR#, IOW# and CSA# or CSB# inputs for data bus operation. The Motorola bus compatible
interface instead uses the R/W#, CS# and A3 signals for data bus transactions. Few data bus interface signals
change their functions depending on user’s selection, see pin description for details. The Intel and Motorola
bus interface selection is made through the 16/68# pin.
Data Rate
The V2551 is capable of operation up to 4 Mbps at 3.3V with 16X internal sampling clock rate, 8 Mbps at 3.3V
with 8X sampling clock rate and 16 Mbps at 3.3V with 4X sampling clock rate. The device can operate with an
external 24 MHz crystal 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 V2551 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 V2551 is software compatible with previous generation of
UARTs, 16C450, 16C550 and 16C650A.
相關PDF資料 |
PDF描述 |
|---|---|
| XR16V2552IJ-F | IC UART FIFO 16B DUAL 44PLCC |
| XR16V2650IM-F | IC UART FIFO 32B DUAL 48TQFP |
| XR16V2651IM-F | IC UART FIFO 32B DUAL 48TQFP |
| XR16V2652IJ-F | IC UART FIFO 32B DUAL 44PLCC |
| XR16V2750IL-F | IC UART FIFO 64B DUAL 32QFN |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| XR16V2551ILTR-F | 制造商:Exar Corporation 功能描述:UART 2-CH 16Byte FIFO 2.5V/3.3V 32-Pin QFN EP T/R 制造商:Exar Corporation 功能描述:XR16V2551ILTR-F |
| XR16V2551IM | 制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述: |
| XR16V2551IM-0B-EB | 功能描述:UART 接口集成電路 Supports V2551 48 ld TQFP, PCI Interface RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據速率: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 |
| XR16V2551IM-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 |
| XR16V2551IMTR-F | 制造商:Exar Corporation 功能描述:UART 2-CH 16Byte FIFO 2.5V/3.3V 48-Pin TQFP T/R 制造商:Exar Corporation 功能描述:XR16V2551IMTR-F |
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