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XR16M2751IM48 PDF预览

XR16M2751IM48

更新时间: 2024-11-22 02:54:35
品牌 Logo 应用领域
艾科嘉 - EXAR 先进先出芯片
页数 文件大小 规格书
52页 1115K
描述
HIGH PERFORMANCE DUART WITH 64-BYTE FIFO AND POWERSAVE

XR16M2751IM48 技术参数

生命周期:Obsolete零件包装代码:QFP
包装说明:TFQFP,针数:48
Reach Compliance Code:unknownHTS代码:8542.31.00.01
风险等级:5.73地址总线宽度:3
边界扫描:NO最大时钟频率:64 MHz
通信协议:ASYNC, BIT最大数据传输速率:1 MBps
外部数据总线宽度:8JESD-30 代码:S-PQFP-G48
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:85 °C最低工作温度:-40 °C
封装主体材料:PLASTIC/EPOXY封装代码:TFQFP
封装形状:SQUARE封装形式:FLATPACK, THIN PROFILE, FINE PITCH
认证状态:Not Qualified座面最大高度:1.2 mm
最大供电电压:3.63 V最小供电电压:1.62 V
标称供电电压:3.3 V表面贴装:YES
技术:CMOS温度等级:INDUSTRIAL
端子形式:GULL WING端子节距:0.5 mm
端子位置:QUAD宽度:7 mm
uPs/uCs/外围集成电路类型:SERIAL IO/COMMUNICATION CONTROLLER, SERIALBase Number Matches:1

XR16M2751IM48 数据手册

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PRELIMINARY  
HIGH PERFORMANCE DUART WITH 64-BYTE FIFO AND POWERSAVE  
XR16M2751  
JUNE 2007  
P1.0.0  
FEATURES  
GENERAL DESCRIPTION  
1.62 to 3.6 Volt Operation  
1
The XR16M2751 (M2751) is a high performance  
Pin-to-pin compatible to Exar’s XR16V2751 in the  
dual universal asynchronous receiver and transmitter  
(UART) with 64 byte TX and RX FIFOs. The device  
operates from 1.62 to 3.6 volts and is pin-to-pin and  
software compatible to Exar’s XR16V2751. The  
device includes 2 additional capabilities over the  
XR16M2750: Intel and Motorola data bus selection  
and a “PowerSave” mode to further reduce sleep  
current to a minimum during sleep mode. It supports  
the Exar’s enhanced features of programmable FIFO  
trigger level and FIFO level counters, automatic  
hardware (RTS/CTS) and software flow control,  
automatic RS-485 half duplex direction control output  
and a complete modem interface. An internal  
loopback capability allows system diagnostics.  
Independent programmable fractional baud rate  
generators are provided in each channel to select  
data rates up to 8 Mbps at 3.3 Volt and 8X sampling  
clock. The M2751 is available in a 48-pin TQFP  
package.  
48-TQFP package  
Two independent UART channels  
Register set identical to 16V2751  
Data rate of up to 8 Mbps at 3.3 V, and 6.25  
Mbps at 2.5 V and 4 Mbps at 1.8 V with 8X  
sampling rate  
Fractional Baud Rate Generator  
Transmit and Receive FIFOs of 64 bytes  
Programmable TX and RX FIFO Trigger Levels  
Transmit and Receive FIFO Level Counters  
Automatic Hardware (RTS/CTS) Flow Control  
Selectable Auto RTS Flow Control Hysteresis  
Automatic Software (Xon/Xoff) Flow Control  
Automatic RS-485 Half-duplex Direction  
Control Output via RTS#  
Wireless Infrared (IrDA 1.0) Encoder/Decoder  
Automatic sleep mode with wake-up interrupt  
Full modem interface  
NOTE: 1 Covered by U.S. Patent #5,649,122 and #5,949,787  
APPLICATIONS  
PowerSave Feature reduces sleep current to 15  
µA  
Portable Appliances  
Telecommunication Network Routers  
Ethernet Network Routers  
Cellular Data Devices  
Device Identification and Revision  
Crystal oscillator (up to 32MHz) or external clock  
(up to 64MHz) input  
Factory Automation and Process Controls  
48-TQFP package  
FIGURE 1. XR16M2751 BLOCK DIAGRAM  
1.62 to 3.6V VCC  
GND  
PwrSave  
A2:A0  
D7:D0  
UART Channel A  
IOR# (VCC)  
TXA, RXA, DTRA#,  
IOW# (R/W#)  
64 Byte TX FIFO  
UART  
Regs  
DSRA#, RTSA#,  
DTSA#, CDA#, RIA#,  
OP2A#  
CSA# (CS#)  
CSB# (A3)  
IR  
ENDEC  
TX & RX  
BRG  
INTA (IRQ#)  
INTB (logic 0)  
64 Byte RX FIFO  
TXB, RXB, DTRB#,  
DSRB#, RTSB#,  
CTSB#, CDB#, RIB#,  
OP2B#  
TXRDYA#  
TXRDYB#  
RXRDYA#  
RXRDYB#  
Intel or  
UART Channel B  
(same as Channel A)  
Motorola  
Data Bus  
Interface  
XTAL1  
XTAL2  
Reset (Reset#)  
16/68#  
Crystal Osc/Buffer  
CLKSEL  
HDCNTL#  
Exar Corporation 48720 Kato Road, Fremont CA, 94538 (510) 668-7000 FAX (510) 668-7017 www.exar.com  

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