XR68M752IB49-F

更新时间： 2024-11-21 13:16:11

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
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54页	1301K
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XR68M752IB49-F 数据手册

XR16M752/XR68M752

HIGH PERFORMANCE DUART WITH 64-BYTE FIFO

JUNE 2009

REV. 1.1.1

FEATURES

GENERAL DESCRIPTION

• 1.62 to 3.6 Volt Operation

The XR16M752/XR68M752 (M752) is a high

• Pin-to-pin and software compatible to TI’s

TL16C752B and Philips’ SC16C752B in the 48-

TQFP package

performance dual universal asynchronous receiver

and transmitter (UART) with 64 byte TX and RX

FIFOs. The M752 operates from 1.62 to 3.63 volts. It

is pin-to-pin and software compatible to the

TL16C752B and SC16C752B, but with additional

features such as a programmable fractional baud rate

generator, automatic RS-485 half-duplex direction

control, infrared mode and 8X and 4X sampling rate.

The standard features include 16 selectable TX and

RX FIFO trigger levels, automatic hardware (RTS/

CTS) and software (Xon/Xoff) flow control, and a

complete modem interface. Onboard registers

provide the user with operational status and data

error flags. An internal loopback capability allows

system diagnostics. Each channel is independently

programmable for data rates up to 16 Mbps at 3.3V

with a 4X sampling rate. The XR68M752 has an

additional 16/68# pin to select between the Intel and

Motorola bus interface. The M752 is available in the

48-pin TQFP, 32-pin QFN and 49-pin STBGA

packages.

• Two independent UART channels

■ Data rate of up to 16 Mbps at 3.3 V

■ Data rate of up to 12.5 Mbps at 2.5 V

■ Data rate of up to 8 Mbps at 1.8 V

■ Fractional Baud Rate Generator

■ Data sampling rates of 16X, 8X and 4X

■ Transmit and Receive FIFOs of 64 bytes

■ Programmable TX and RX FIFO Trigger Levels

■ Automatic Hardware (RTS/CTS) Flow Control

■ Automatic Software (Xon/Xoff) Flow Control

■ Halt and Resume Transmission Control

■ Automatic RS-485 Half-duplex Direction

Control Output via RTS#

■ Wireless Infrared (IrDA 1.0) Encoder/Decoder

■ Automatic sleep mode

■ Full modem interface

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

• Crystal oscillator (up to 24MHz) or external clock

(up to 64MHz) input

APPLICATIONS

• 48-TQFP, 32-QFN and 49-STBGA packages

• Portable Appliances

• Telecommunication Network Routers

• Ethernet Network Routers

• Cellular Data Devices

• Factory Automation and Process Controls

FIGURE 1. XR16M752 BLOCK DIAGRAM

1.62 to 3.63 Volt VCC

A2:A0

D7:D0

GND

IOR# (NC)

IOW# (R/W#)

UART Channel A

TXA, RXA, DTRA#,

64 Byte TX FIFO

CSA# (CS#)

CSB# (A3)

UART

Regs

DSRA#, RTSA#,

DTSA#, CDA#, RIA#,

OP2A#

TX & RX

ENDEC

8-bit Data

Bus

Interface

INTA (IRQ#)

INTB (NC)

BRG

64 Byte RX FIFO

TXRDYA#

TXRDYB#

RXRDYA#

RXRDYB#

TXB, RXB, DTRB#,

DSRB#, RTSB#,

CTSB#, CDB#, RIB#,

OP2B#

UART Channel B

(same as Channel A)

Reset/Reset#

16/68#

XTAL1

XTAL2

Crystal Osc/Buffer

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

12 3 4 5 6 7...54

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与XR68M752IB49-F相关器件

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XR68M752IL-0B-EB	EXAR	获取价格	EVAL BOARD FOR XR68M752 32QFN
XR68M752IL32	EXAR	获取价格	HIGH PERFORMANCE DUART WITH 64-BYTE FIFO
XR68M752IL32-F	EXAR	获取价格	Serial I/O Controller, 2 Channel(s), 2MBps, CMOS, 5 X 5 MM, 0.90 MM HEIGHT, GREEN, QFN-32
XR68M752IL32TR-F	EXAR	获取价格	IC UART FIFO 64B DUAL 32QFN
XR68M752IM48	EXAR	获取价格	HIGH PERFORMANCE DUART WITH 64-BYTE FIFO
XR68M752IM48-F	EXAR	获取价格	Serial I/O Controller, 2 Channel(s), 2MBps, CMOS, PQFP48, 7 X 7 MM, 1 MM HEIGHT, GREEN, TQ
XR68M752IM48TR-F	EXAR	获取价格	IC UART FIFO 64B DUAL 48TQFP
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XR7090AA-BC-DD-EF-G-HHHH	CREE	获取价格	XLamp㈢ XR LED Binning and Labeling
XR7090AM-L1-0001	CREE	获取价格	XLamp㈢ XR LED Binning and Labeling

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