XR16L580IMTRF Exar Corporation, XR16L580IMTRF Datasheet

XR16L580IMTRF

Manufacturer Part Number

XR16L580IMTRF

Description

QFP

Manufacturer

Exar Corporation

Datasheet

1.XR16L580IMTRF.pdf (49 pages)

Specifications of XR16L580IMTRF

Date_code

08+

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AUGUST 2011

GENERAL DESCRIPTION

The XR16L580 (L580) is a 2.25 to 5.5 volt Universal

Asynchronous Receiver and Transmitter (UART) with 5 volt

tolerant inputs and a reduced pin count. It is pin-to-pin and

software compatible to industry standard 16C450, 16C550,

ST16C580, ST16C650A and XR16C850 UARTs. It has 16

bytes of TX and RX FIFOs and is capable of operating up to

serial data rate of 1 Mbps at 2.25 volt supply voltage. The

internal registers is compatible to the 16C550 register set

plus enhanced registers for additional features to support

today’s high bandwidth data communication needs. The

enhanced features include Intel or Motorola data bus

interface to match your CPU interface, automatic hardware

and software flow control to prevent data loss, selectable

RX and TX trigger levels for more efficient interrupt service,

wireless infrared (IrDA) encoder/decoder for wireless

applications and a unique Power-Save mode to increase

battery operating time. The device comes in the 48-TQFP

and very small 32-QFN and 24-QFN packages in industrial

temperature range.

APPLICATIONS

•

Exar

IGURE

Handheld Terminals and Tablets

Handheld Computers

Wireless Portable Point-of-Sale Terminals

Cellular Phones DataPort

GPS Devices

Personal Digital Assistants Modules

Battery Operated Instruments

IOW# (R/W#)

INT (IRQ#)

PwrSave

(RESET#)

Corporation 48720 Kato Road, Fremont CA, 94538

RESET

A2:A0

D7:D0

IOR#

16/68#

1. B

CS#

LOCK

IAGRAM

SMALLEST 2.25V TO 5.5V UART WITH 16-BYTE FIFO AND POWERSAVE

Data Bus

Motorola

Interface

Intel or

UART

Regs

BRG

Crystal Osc/Buffer

•

*5 V Tolerant Inputs

(Except for XTAL1)

(510) 668-7000

TX & RX

16 Byte RX FIFO

16 Byte TX FIFO

FEATURES

•

UART

Smallest Full Featured UART

2.25V to 5.5V Supply Voltage

5V Tolerant Inputs (except XTAL1)

Intel/Motorola Bus Select

’0 ns’ Address Hold Time (T

Pin and Software Compatible to industry standard

16C450,

XR16C850 in the 48-TQFP package.

16-byte Transmit FIFO

16-byte Receive FIFO with Errors Flags

Selectable RX and TX FIFO Trigger Levels

Automatic Hardware (RTS/CTS) Flow Control

Automatic Software (Xon/Xoff) Flow Control

Up to 3.125 Mbps Data Rate at 5V and 2 Mbps at 3.3V

and 1 Mbps at 2.25V Operation with External Clock Input

Infrared (IrDA) Encoder/Decoder

Complete Modem Interface

Power-Save Mode to conserve battery power

Sleep Mode with Wake-up Interrupt

Small packages: 24-QFN (4x4x0.9mm) and 32-QFN

(5x5x0.9mm)

Compatible to standard 48-TQFP packages, without the

following signals: IOR, IOW, CS1, CS2, TXRDY#,

RXRDY#, RCLK, BAUDOUT#, OP1# and OP2#

Industrial Temperature Grade(-40 to +85

ENDEC

•

16C550,

FAX (510) 668-7017

ST16C580,

(2.25 to 5.5 V)

XTAL1

XTAL2

TX, RX,

RTS#, CTS#,

DTR#, DSR#,

RI#, CD#

VCC

GND

and T

XR16L580

•

www.exar.com

ADH

ST16C650A

)

REV. 1.4.2

GNugget_BLK

and

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