ST16C554DIJ68 Exar Corporation, ST16C554DIJ68 Datasheet

ST16C554DIJ68

Manufacturer Part Number

ST16C554DIJ68

Description

PLCC68

Manufacturer

Exar Corporation

Datasheet

1.ST16C554DIQ64.pdf (39 pages)

Specifications of ST16C554DIJ68

Date_code

10+

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Download datasheet (757Kb)

JUNE 2006

GENERAL DESCRIPTION

The ST16C554/554D (554) is a quad Universal

Asynchronous Receiver and Transmitter (UART) with

16 bytes of transmit and receive FIFOs, selectable

receive FIFO trigger levels and data rates of up to 1.5

Mbps. Each UART has a set of registers that provide

the user with operating status and control, receiver

error

controls.

onboard diagnostics. The 554 is available in a 64-pin

LQFP and a 68-pin PLCC package.

package only offers the 16 mode interface, but the

68-pin package offers an additional 68 mode

interface which allows easy integration with Motorola

processors.

three

ST16C554DCQ64

output. The 554 combines the package interface

modes of the 16C554 and 68C554 on a single

integrated chip.

Exar

IGURE

Corporation 48720 Kato Road, Fremont CA, 94538

TXRDY# A-D

RXRDY# A-D

indications,

1. ST16C554 B

state

INTSEL

16 / 68#

A2:A0

D7:D0

CSC#

CSD#

IOW#

CSA#

CSB#

Reset

IOR#

INTC

INTD

INTB

An internal loopback capability allows

INTA

The ST16C554CQ64 (64-pin) offers

interrupt

provides

and

LOCK

Data Bus

Interface

modem

output

IAGRAM

continuous

serial

while

The 64-pin

interface

interrupt

2.97V TO 5.5V QUAD UART WITH 16-BYTE FIFO

the

•

UART

BRG

Regs

(510) 668-7000

(same as Channel A)

FEATURES

•

APPLICATIONS

•

Crystal Osc / Buffer

UART Channel C

UART Channel D

UART Channel B

Pin-to-pin compatible with the industry standard

ST16C454,

TL16C554A and Philips’ SC16C554B

Intel or Motorola Data Bus Interface select

Four independent UART channels

2.97V to 5.5V supply operation

Crystal oscillator or external clock input

Portable Appliances

Telecommunication Network Routers

Ethernet Network Routers

Cellular Data Devices

Factory Automation and Process Controls

UART Channel A

TX & RX

16 Byte TX FIFO

16 Byte RX FIFO

■

Data rates of up to 1.5 Mbps at 5 V

Data rates of up to 500 Kbps at 3.3V

16 byte Transmit FIFO

16 byte Receive FIFO with error tags

4 Selectable RX FIFO Trigger Levels

Full modem interface

•

ENDEC

FAX (510) 668-7017

ST68C454,

ST16C554/554D

GND

XTAL1

XTAL2

2.97 V to 5.5 V VCC

CDC#, RIC#

CDD#, RID#

TXA, RXA, IRTXA, DTRA#,

DSRA#, RTSA#, CTSA#,

CDA#, RIA#

TXB, RXB, IRTXB, DTRB#,

DSRB#, RTSB#, CTSB#,

CDB#, RIB#

TXC, RXC, IRTXC, DTRC#,

DSRC#, RTSC#, CTSC#,

TXD, RXD, IRTXD, DTRD#,

DSRD#, RTSD#, CTSD#,

•

www.exar.com

ST68C554,

REV. 4.0.1

TI’s

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