Datasheet > XR16L78464-TQFP

XR16L78464-TQFP

更新时间： 2024-11-06 22:41:15

品牌	Logo	应用领域
艾科嘉 - EXAR		/
页数	文件大小	规格书
52页	587K
描述
HIGH PERFORMANCE 2.97V TO 5.5V QUAD UART

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XR16L78464-TQFP 数据手册

áç

XR16L784

HIGH PERFORMANCE 2.97V TO 5.5V QUAD UART

JUNE 2004

REV.1.2.0

FEATURES

GENERAL DESCRIPTION

• 2.97V to 5.5V operation with 5V Tolerant Inputs

• 8-bit Intel or Motorola Data Bus Interface

• Single Open Drain Interrupt output for all 4 channels

• Global Interrupt Source Registers for all channels

• 5G (Fifth Generation) “Flat” Register Set

• Each UART is Independently Controlled with:

•16C550 Compatible Registers

The XR16L784¹(784) is

Asynchronous Receiver and Transmitter (UART). The

device is designed for high bandwidth requirement in

communication systems. The global interrupt source

quad Universal

complete interrupt status

indication for all 4 channels to speed up interrupt

parsing. Each UART has its own 16C550 compatible

set of configuration registers, transmit and receive

FIFOs of 64 bytes, fully programmable transmit and

receive FIFO level triggers, transmit and receive

FIFO level counters, automatic RTS/CTS or DTR/

DSR hardware flow control with programmable

hysteresis, automatic software (Xon/Xoff) flow

control, IrDA (Infrared Data Association) encoder/

decoder, and a 16-bit general purpose timer/counter.

•64-byte Transmit and Receive FIFOs

•Transmit and Receive FIFO Level Counters

•Programmable TX and RX FIFO Trigger Levels

•Automatic RTS/CTS or DTR/DSR Flow Control

•Selectable RTS Flow Control Hysteresis

•Automatic Xon/Xoff Software Flow Control

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

APPLICATIONS

•Automatic RS485 Half-duplex Control Output with

16 Selectable Turn-around Delay

• Remote Access Servers

•Infrared (IrDA 1.1) Data Encoder/Decoder

•Programmable Data Rate with Prescaler

•Up to 3.12 (16x) and 6.25 (8x) Mbps Data Rate

• A General Purpose 16-bit Timer/Counter

• Sleep Mode with Automatic Wake-up Indicator

• 64-pin TQFP Package (10x10x1.4 mm)

• Ethernet Network to Serial Ports

• Network Management

• Factory Automation and Process Control

• Point-of-Sale Systems

• Multi-port RS-232/RS-422/RS-485 Cards

FIGURE 1. BLOCK DIAGRAM

2.97V to 5.5V VCC

GND

*All Inputs are 5V Tolerant

(Except XTAL1)

UART Channel 0

64 Byte TX FIFO

UART

TX0, RX0, DTR0#,

DSR0#, RTS0#,

CTS0#, CD0#, RI0#

A7:A0

Regs

TX &

ENDEC

D7:D0

BRG

Device

64 Byte RX FIFO

IOR#

Configuration

Intel or

Motorola

Data

Bus

Interface

IOW#

CS#

UART Channel 1

UART Channel 2

UART Channel 3

INT#

16/68#

RST#

ENIR

TX3, RX3, DTR3#,

DSR3#, RTS3#,

CTS3#, CD3#, RI3#

16-bit

Timer/Counter

Crystal Osc/

Buffer

XTAL1

XTAL2

TMRCK

784BLK

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

12 3 4 5 6 7...52

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与XR16L78464-TQFP相关器件

型号	品牌	获取价格	描述	数据表
XR16L784CV	EXAR	获取价格	HIGH PERFORMANCE 2.97V TO 5.5V QUAD UART
XR16L784CV-F	EXAR	获取价格	HIGH PERFORMANCE 2.97V TO 5.5V QUAD UART
XR16L784IV	EXAR	获取价格	HIGH PERFORMANCE 2.97V TO 5.5V QUAD UART
XR16L788	EXAR	获取价格	HIGH PERFORMANCE OCTAL UART
XR16L788_05	EXAR	获取价格	HIGH PERFORMANCE 2.97V TO 5.5V OCTAL UART
XR16L788_08	EXAR	获取价格	HIGH PERFORMANCE 2.97V TO 5.5V OCTAL UART
XR16L788CQ	EXAR	获取价格	HIGH PERFORMANCE OCTAL UART
XR16L788CQ-F	EXAR	获取价格	HIGH PERFORMANCE 2.97V TO 5.5V OCTAL UART
XR16L788CQTR	EXAR	获取价格	Serial I/O Controller, PQFP100
XR16L788CQTR-F	EXAR	获取价格	Serial I/O Controller, PQFP100,

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