ST16C550IQ48 Exar Corporation, ST16C550IQ48 Datasheet

ST16C550IQ48

Manufacturer Part Number

ST16C550IQ48

Description

Manufacturer

Exar Corporation

Datasheet

1.ST16C550IP40.pdf (35 pages)

Specifications of ST16C550IQ48

Case

TQFP48

Date_code

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Current page: 1 of 35
Download datasheet (242Kb)

The ST16C550 (550) is a universal asynchronous re-

ceiver and transmitter with 16 byte transmit and receive

FIFO. It operates at 2.97 to 5.5 volts. A programmable

baud rate generator can select transmit and receive

clock rates from 50 bps to 1.5 Mbps.

The ST16C550 is an improved version of the NS16C550

UART with higher operating speed and lower access

time. The ST16C550 on board status registers provides

the error conditions, type and status of the transfer

operation being performed. Included is complete MO-

DEM control capability, and a processor interrupt

system that may be software tailored to the user’s

requirements. The ST16C550 provides internal loop-

back capability for on board diagnostic testing.

The ST16C550 is available in 40 pin PDIP, 44 pin PLCC,

and 48 pin TQFP packages. It is fabricated in an

advanced CMOS process to achieve low drain power

and high speed requirements.

Part number

ST16C550CP40

ST16C550IP40

ST16C550IJ44

ST16C550IQ48

ST16C550CJ44

ST16C550CQ48

GENERAL DESCRIPTION

FEATURES

Pin to pin and functionally compatible to the Industry

Standard 16C550

2.97 to 5.5 volt operation

24MHz clock operation at 5V

16MHz clock operation at 3.3V

16 byte transmit FIFO

16 byte receive FIFO with error flags

Full duplex operation

Transmit and receive control

Four selectable receive FIFO interrupt trigger levels

ORDERING INFORMATION

Rev. 5.01

EXAR Corporation, 48720 Kato Road, Fremont, CA 94538 (510) 668-7000 FAX (510) 668-7017

Package

40-Lead PDIP

44-Lead PLCC

48-Lead TQFP

40-Lead PDIP

44-Lead PLCC

48-Lead TQFP

Operating temperature

0° C to + 70° C

-40° C to + 85° C

Standard modem interface

Compatible with ST16C450

Low operating current ( 1.2mA typ.)

-BAUDOUT

Device Status

Active. See the ST16C550CQ48 for new designs.

Active

Active. See the ST16C550IQ48 for new designs.

Active

RCLK

-CS2

N.C.

CS0

CS1

UART WITH 16-BYTE FIFO’s

PLCC Package

ST16C550CJ44

ST16C550

April 2005

RESET

-OP1

-DTR

-RTS

-OP2

N.C.

INT

-RXRDY

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