ST68C554 datasheet(1/40 Pages) EXAR

部件名	ST68C554

功能描述	QUAD UART WITH 16-BYTE FIFOS

PDF	40 Pages

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制造商	EXAR [Exar Corporation]

网页	http://www.exar.com

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

ST16C554/554D

ST68C554

Rev. 3.10

PLCC Package

QUAD UART WITH 16-BYTE FIFOS

DESCRIPTION

The ST16C554D is a universal asynchronous receiver

and transmitter (UART) with a dual foot print interface.

The 554D is an enhanced UART with 16 byte FIFOs,

receive trigger levels and data rates up to 1.5Mbps.

Onboard status registers provide the user with error

indications and operational status, modem interface

control. System interrupts may be tailored to meet

user requirements. An internal loopback capability

allows onboard diagnostics. The 554D is available in

64 pin TQFP, and 68 pin PLCC packages. The 68 pin

PLCC package offer an additional 68 mode which

allows easy integration with Motorola, and other popu-

lar microprocessors. The ST16C554CQ64 (64 pin)

offers three state interrupt control while the

ST16C554DCQ64 provides constant active interrupt

outputs. The 64 pin devices do not offer TXRDY/

RXRDY outputs. The 554D combines the package

interface modes of the 16C554 and 68C554 series on

a single integrated chip.

FEATURES

• Compatibility with the Industry Standard

ST16C454, ST68C454, ST68C554, TL16C554

• 1.5 Mbps transmit/receive operation (24MHz)

• 16 byte transmit FIFO

• 16 byte receive FIFO with error flags

• Independent transmit and receive control

• Software selectable Baud Rate Generator

• Four selectable Receive FIFO interrupt trigger

levels

• Standard modem interface

ORDERING INFORMATION

Part number

Pins Package Operatingtemperature

ST16C554DCJ68

68

PLCC

0° C to + 70° C

ST16C554DCQ64 64

TQFP

0° C to + 70° C

ST16C554CQ64

64

TQFP

0° C to + 70° C

ST16C554DIJ68

68

PLCC

-40° C to + 85° C

ST16C554DIQ64

64

TQFP

-40° C to + 85° C

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

60

59

58

57

56

55

54

53

52

51

50

49

48

47

46

45

44

-DSRA

-CTSA

-DTRA

VCC

-RTSA

INTA

-CSA

TXA

-IOW

TXB

-CSB

INTB

-RTSB

GND

-DTRB

-CTSB

-DSRB

-DSRD

-CTSD

-DTRD

GND

-RTSD

INTD

-CSD

TXD

-IOR

TXC

-CSC

INTC

-RTSC

VCC

-DTRC

-CTSC

-DSRC

ST16C554DCJ68

16 MODE

类似零件编号 - ST68C554

制造商	部件名	数据表	功能描述
Exar Corporation	ST68C554CJ68	757Kb / 39P	2.97V TO 5.5V QUAD UART WITH 16-BYTE FIFO
	ST68C554CJ68	761Kb / 39P	2.97V TO 5.5V QUAD UART WITH 16-BYTE FIFO
	ST68C554IJ68	757Kb / 39P	2.97V TO 5.5V QUAD UART WITH 16-BYTE FIFO
	ST68C554IJ68	761Kb / 39P	2.97V TO 5.5V QUAD UART WITH 16-BYTE FIFO

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类似说明 - ST68C554

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