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XR16L651CM PDF预览

XR16L651CM

更新时间: 2024-09-17 04:23:31
品牌 Logo 应用领域
艾科嘉 - EXAR 微控制器和处理器串行IO控制器通信控制器外围集成电路先进先出芯片数据传输时钟
页数 文件大小 规格书
56页 635K
描述
2.25V TO 5.5V UART WITH 32-BYTE FIFO

XR16L651CM 技术参数

是否无铅: 含铅是否Rohs认证: 不符合
生命周期:Obsolete零件包装代码:QFP
包装说明:7 X 7 MM, 1 MM HEIGHT, TQFP-48针数:48
Reach Compliance Code:compliantHTS代码:8542.31.00.01
风险等级:5.85Is Samacsys:N
其他特性:ALSO OPERATES AT 2.5V SUPPLY地址总线宽度:10
边界扫描:NO总线兼容性:ISA
最大时钟频率:50 MHz通信协议:ASYNC, BIT
数据编码/解码方法:NRZ最大数据传输速率:0.390625 MBps
外部数据总线宽度:8JESD-30 代码:S-PQFP-G48
JESD-609代码:e0长度:7 mm
低功率模式:YES串行 I/O 数:1
端子数量:48最高工作温度:70 °C
最低工作温度:封装主体材料:PLASTIC/EPOXY
封装代码:TFQFP封装等效代码:TQFP48,.35SQ
封装形状:SQUARE封装形式:FLATPACK, THIN PROFILE, FINE PITCH
峰值回流温度(摄氏度):240电源:2.5/5 V
认证状态:Not Qualified座面最大高度:1.2 mm
子类别:Serial IO/Communication Controllers最大供电电压:5.5 V
最小供电电压:2.25 V标称供电电压:5 V
表面贴装:YES技术:CMOS
温度等级:COMMERCIAL端子面层:TIN LEAD
端子形式:GULL WING端子节距:0.5 mm
端子位置:QUAD处于峰值回流温度下的最长时间:30
宽度:7 mmuPs/uCs/外围集成电路类型:SERIAL IO/COMMUNICATION CONTROLLER, SERIAL
Base Number Matches:1

XR16L651CM 数据手册

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áç  
XR16L651  
2.25V TO 5.5V UART WITH 32-BYTE FIFO  
REV. 1.3.0  
JANUARY 2004  
FEATURES  
GENERAL DESCRIPTION  
Added feature in devices with top mark date code of  
"C2 YYWW" and newer:  
The XR16L6511 (651) is a 2.25 to 5.5 volt Universal  
Asynchronous Receiver and Transmitter (UART) with  
5 volt tolerant inputs. This device supports Intel and  
Motorola data bus interfaces and is software  
compatible to industry standard 16C450, 16C550,  
ST16C580 and ST16C650A UARTs.  
0 ns address hold time  
2.25 to 5.5 Volt Operation w/ 5 Volt Tolerant Inputs  
ST16C450/550/580/650A Software Compatible  
Intel, Motorola or PC Mode 8-bit Bus Interface  
Up to 3.125 Mbps Data Rate at 5 Volt Operation  
32-byte Transmit and Receive FIFOs  
The 651 has 32 bytes of TX and RX FIFOs and is  
capable of operating up to serial data rates of 3.125  
Mbps at 5 volt supply voltage. The internal registers  
include the 16C550 register set plus Exar’s enhanced  
registers for additional features to support today’s  
highly demanding data communication needs. The  
enhanced features include automatic hardware and  
software flow control, selectable TX and RX trigger  
levels, and wireless infrared (IrDA) encoder/decoder.  
Automatic RS485 Half-Duplex Control Output  
Automatic Hardware (RTS/CTS) Flow Control  
Hardware Flow Control Hysteresis  
Automatic Software (Xon/Xoff) Flow Control  
Infrared (IrDA) Encoder/Decoder Enable Input  
Programmable Infrared Encoder Pulse Width  
Sleep Mode with Wake-up Indicator via interrupt  
The device provides a new capability to give user the  
ability to program the wireless infrared encoder  
output pulse width, hence reducing the power  
consumption of a handheld unit.  
APPLICATIONS  
The XR16L651 device comes in a small 7x7x1mm  
48-pin TQFP package in both the commercial and  
industrial temperature ranges.  
Battery Operated Electronics  
Internet Appliances  
NOTE: 1 Covered by US patents #5,649,122.  
Handheld Terminal  
Personal Digital Assistants  
Cellular Phones DataPort  
Wireless Infrared Data Communications Systems  
FIGURE 1. BLOCK DIAGRAM  
RESET  
A2:A0  
32 Byte TX FIFO  
Transmitter  
TX  
D7:D0  
Infrared Encoder and  
Pulse Width Control  
IOR#  
IOR  
IOW#/R/W#  
Intel,  
CTS Flow  
Control  
UART  
Configuration  
Regs  
IOW  
Motorola  
or PC  
Data Bus  
Interface  
DTR#, DSR#,  
RTS#, CTS#,  
CD#, RI#  
CS2#  
CS1  
CS0  
Modem Control Signals  
RTS Flow  
Control  
Infrared  
Decoder  
INT  
TXRDY#  
Receiver with Auto  
Software Flow Control  
RDRDY#  
DDIS#  
ENIR  
RX  
32 Byte RX FIFO  
BRG  
Prescaler  
IM#  
PCMODE#  
Baud Rate Generator  
Crystal Osc/Buffer  
S1  
S2  
S3  
IRQA  
IRQB  
IRQC  
PC Mode:  
COM 1 to 4  
Decode Logic  
XTAL1/CLK  
XTAL2  
Exar Corporation 48720 Kato Road, Fremont CA, 94538 (510) 668-7000 FAX (510) 668-7017 www.exar.com  

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