XR16C864IQTR-F

更新时间： 2024-11-07 13:16:11

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
51页	596K
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XR16C864IQTR-F 数据手册

áç

XR16C864

2.97V TO 5.5V QUAD UART WITH 128-BYTE FIFO

APRIL 2004

REV. 2.0.1

FEATURES

GENERAL DESCRIPTION

Added feature in devices with top mark date code of

"F2 YYWW" and newer:

The XR16C864¹(864) is an enhanced quad

Universal Asynchronous Receiver and Transmitter

(UART) each with 128 bytes of transmit and receive

FIFOs, transmit and receive FIFO counters and

trigger levels, automatic hardware and software flow

control, automatic RS-485 half-duplex direction

control and data rates of up to 2 Mbps. Each UART

has a set of registers that provide the user with

operating status and control, receiver error

indications, and modem serial interface controls.

System interrupts may be tailored to meet design

requirements. An internal loopback capability allows

onboard diagnostics. The 864 is available in the 100-

pin QFP package. The XR16C864 offers faster

channel status access by providing separate outputs

for TXRDY and RXRDY, offer separate Infrared TX

outputs and a separate clock input for channel C

(CHCCLK). The XR16C864 is compatible with the

industry standard ST16C554/554D, ST16C654/654D

and XR16C854/854D.

■ 5 volt tolerant inputs

• 2.97 to 5.5 Volt Operation

• Pin-to-pin compatible with the industry standard

ST16C554 and ST16C654 and TI’s TL16C554N

and TL16C754BFN

• Intel or Motorola Data Bus Interface select

• Four independent UART channels

■ Register Set Compatible to 16C550

■ Data rates of up to 2 Mbps

■ Transmit and Receive FIFOs of 128 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

■ Wireless Infrared (IrDA 1.0) Encoder/Decoder

• Sleep Mode (200 uA typical)

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

• Crystal oscillator or external clock input

APPLICATIONS

• Portable Appliances

• Telecommunication Network Routers

• Ethernet Network Routers

• Cellular Data Devices

• Factory Automation and Process Controls

FIGURE 1. XR16C864 BLOCK DIAGRAM

2.97V to 5.5V VCC

5V tolerant inputs (except XTAL1)

UART Channel A

A2:A0

D7:D0

128 Byte TX FIFO

IOR#

IOW#

TXA, RXA, IRTXA, DTRA#,

DSRA#, RTSA#, CTSA#,

CDA#, RIA#, OP2A#,

OP1A#/RS-485

UART

Regs

BRG

ENDEC

TX & RX

CS# A-D

Intel or

INT A-D

Motorola

128 Byte RX FIFO

TXRDY# A-D

RXRDY# A-D

Reset

Data Bus

Interface

TXB, RXB, IRTXB, DTRB#,

DSRB#, RTSB#, CTSB#,

CDB#, RIB#, OP2B#,

OP1B#/RS-485

UART Channel B

(same as Channel A)

16/68#

INTSEL

CLKSEL

CHCCLK

TXC, RXC, IRTXC, DTRC#,

DSRC#, RTSC#, CTSC#,

CDC#, RIC#, OP2C#,

OP1C#/RS-485

UART Channel C

(same as Channel A)

AEN

DACK A-D

Direct

Memory

Access

TXDRQ# A-D

RXDRQ# A-D

TXD, RXD, IRTXD, DTRD#,

DSRD#, RTSD#, CTSD#,

CDD#, RID#, OP2D#,

OP1D#/RS-485

UART Channel D

(same as Channel A)

XTAL1

XTAL2

BCLK A-D

Crystal Osc/Buffer

854 BLK

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

12 3 4 5 6 7...51

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XR16C864IQTR-F 替代型号

型号	品牌	替代类型	描述	数据表
XR16C864IQ-F	EXAR	完全替代	2.97V TO 5.5V QUAD UART WITH 128-BYTE FIFO

与XR16C864IQTR-F相关器件

型号	品牌	获取价格	描述	数据表
XR16C872	EXAR	获取价格	DUAL UART WITH 1284 PARALLEL PORT AND PLUG-AND-PLAY CONTROLLER
XR16C872CQ	EXAR	获取价格	DUAL UART WITH 1284 PARALLEL PORT AND PLUG-AND-PLAY CONTROLLER
XR16C872IQ	EXAR	获取价格	DUAL UART WITH 1284 PARALLEL PORT AND PLUG-AND-PLAY CONTROLLER
XR16L2450	EXAR	获取价格	2.25V TO 5.5V DUART
XR16L2450_05	EXAR	获取价格	2.25V TO 5.5V DUART
XR16L2450IJ	EXAR	获取价格	2.25V TO 5.5V DUART
XR16L2450IJ-F	EXAR	获取价格	Serial I/O Controller, 2 Channel(s), 0.1875MBps, CMOS, PQCC44, GREEN, PLASTIC, LCC-44
XR16L2450IM	EXAR	获取价格	2.25V TO 5.5V DUART
XR16L2450IM-F	EXAR	获取价格	Serial I/O Controller, 2 Channel(s), 0.1875MBps, CMOS, PQFP48, 7 X 7 MM, 1 MM HEIGHT, GREE
XR16L2550	EXAR	获取价格	LOW VOLTAGE DUART WITH 16-BYTE FIFO

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