Datasheet > 微控制器和处理器 > 串行 IO/通信控制器> XR16L2752

XR16L2752

更新时间： 2024-09-16 21:54:51

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
49页	622K
描述
2.25V TO 5.5V DUART WITH 64-BYTE FIFO

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XR16L2752 数据手册

XR16L2752

2.25V TO 5.5V DUART WITH 64-BYTE FIFO

AUGUST 2004

REV. 1.2.0

FEATURES

GENERAL DESCRIPTION

• 2.25 to 5.5 Volt Operation

• 5 Volt Tolerant Inputs

The XR16L2752¹(2752) is a low voltage dual

universal asynchronous receiver and transmitter

(UART) with 5 Volt tolerant inputs. The device

operates from 2.25 to 5.5 Volt supply range and is

pin-to-pin compatible to Exar’s ST16C2552 and

XR16C2852. The 2752 register set is compatible to

the ST16C2552 and the XR16C2852 enhanced

features. It supports the Exar’s enhanced features of

64 bytes of TX and RX FIFOs, 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. Onboard registers

provide the user with operational status and data

error flags. An internal loopback capability allows

system diagnostics. Independent programmable

baud rate generators are provided in each channel to

select data rates up to 6.25 Mbps at 5 Volt and 8X

sampling. The 2752 is available in the 44-pin PLCC

package.

• ^{Pin-to-pin compatible to Exar’s ST16C2552 and}

XR16C2852

• Larger FIFO version of PC16C552

• ^{Two independent UART channels}

■ Reg set compatible to 16C2552 and 16C2852

■ Up to 6.25 Mbps at 5 Volt, 4 Mbps at 3.3 Volt

and 3 Mbps at 2.5 Volt with 8X sampling rate

■ 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

NOTE: 1 Covered by U.S. Patent #5,649,122 and #5,949,787

APPLICATIONS

■ Full modem interface

• ^{Alternate Function Register}

• ^{Portable Appliances}

• ^{Device Identification and Revision}

• ^{Crystal oscillator or external clock input}

• ^{Industrial and commercial temperature ranges}

• ^{44-PLCC package}

• ^{Telecommunication Network Routers}

• ^{Ethernet Network Routers}

• ^{Cellular Data Devices}

• ^{Factory Automation and Process Controls}

FIGURE 1. XR16L2752 BLOCK DIAGRAM

2.25 V to 5.5 V VCC

GND

*5 Volt Tolerant Inputs

(Except External Clock Input)

A2:A0

D7:D0

IOR#

IOW#

CS#

UART Channel A

TXA (or TXIRA)

64 Byte TX FIFO

UART

Regs

CHSEL

ENDEC

TX & RX

INTA

INTB

BRG

64 Byte RX FIFO

RXA (or RXIRA)

8-bit Data

TXRDYA#

Bus

TXRDYB#

TXB (or TXIRB)

RXB (or RXIRB)

UART Channel B

(same as Channel A)

Interface

MFA#

(OP2A#,

BAUDOUTA#, or

RXRDYA#)

XTAL1

XTAL2

CTS#A/B, RI#A/B,

CD#A/B, DSR#A/B

Crystal Osc/Buffer

MFB#

(OP2B#,

BAUDOUTB#, or

RXRDYB#)

Modem Control Logic

Reset

DTR#A/B, RTS#A/B

2752BLK

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (510) 668-7000 • FAX (510) 668-7017 • www.exar.com

12 3 4 5 6 7...49

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与XR16L2752相关器件

型号	品牌	获取价格	描述	数据表
XR16L2752CJ	EXAR	获取价格	2.25V TO 5.5V DUART WITH 64-BYTE FIFO
XR16L2752CJ-F	EXAR	获取价格	Serial I/O Controller, 2 Channel(s), 0.78125MBps, CMOS, PQCC44, GREEN, PLASTIC, LCC-44
XR16L2752IJ	EXAR	获取价格	2.25V TO 5.5V DUART WITH 64-BYTE FIFO
XR16L2752IJ-F	EXAR	获取价格	Serial I/O Controller, 2 Channel(s), 0.78125MBps, CMOS, PQCC44, GREEN, PLASTIC, LCC-44
XR16L570	EXAR	获取价格	SMALLEST 1.62V TO 5.5V UART WITH 16-BYTE FIFO AND POWERSAVE
XR16L570_07	EXAR	获取价格	SMALLEST 1.62V TO 5.5V UART WITH 16-BYTE FIFO AND POWERSAVE
XR16L570IL24	EXAR	获取价格	SMALLEST 1.62V TO 5.5V UART WITH 16-BYTE FIFO AND POWERSAVE
XR16L570IL24-F	EXAR	获取价格	Serial I/O Controller, 1 Channel(s), 0.5MBps, CMOS, 4 X 4 MM, 0.90 MM HEIGHT, GREEN, QFN-2
XR16L570IL32	EXAR	获取价格	SMALLEST 1.62V TO 5.5V UART WITH 16-BYTE FIFO AND POWERSAVE
XR16L570IL32-F	EXAR	获取价格	Serial I/O Controller, 1 Channel(s), 0.5MBps, CMOS, 5 X 5 MM, 0.90 MM HEIGHT, GREEN, QFN-3

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