XR88C681CP/28 EXAR [Exar Corporation], XR88C681CP/28 Datasheet

XR88C681CP/28

Manufacturer Part Number

XR88C681CP/28

Description

CMOS Dual Channel UART (DUART)

Manufacturer

EXAR [Exar Corporation]

Datasheet

1.XR88C681CP28.pdf (101 pages)

Available stocks

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Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

XR88C681CP/28

Manufacturer:

MIT

Quantity:

6 220

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FEATURES

D Two Full Duplex, Independent Channels

D Asynchronous Receiver and Transmitter

D Quadruple-Buffered Receivers and Dual Buffered

D Programmable Stop Bits in 1/16 Bit Increments

D Internal Bit Rate Generators with More than 23 Bit

D Independent Bit Rate Selection for Each Transmitter

D External Clock Capability

D Maximum Bit Rate: 1X Clock - 1Mb/s, 16X Clock -

D Normal, AUTOECHO, Local LOOPBACK and

D Multi-function 16 Bit Counter/Timer

D Interrupt Output with Eight Maskable Interrupt

D Interrupt Vector Output on Acknowledge (40 Pin DIP

GENERAL DESCRIPTION

The EXAR Dual Universal Asynchronous Receiver and

Transmitter (DUART) is a data communications device that

provides two fully independent full duplex asynchronous

communication channels in a single package. The DUART

is designed for use in microprocessor based systems and

may be used in a polled or interrupt driven environment.

The XR88C681 device offers a single IC solution for the

8080/85, 8086/88, Z80, Z8000, 68xx and 65xx

microprocessor families.

ORDERING INFORMATION

Transmitters

Rates

and Receiver

125kb/s

Remote LOOPBACK Modes

Conditions

and 44 Pin PLCC Packages Only)

Rev. 2.11

E2006

XR88C681CN/40

XR88C681CP/28

XR88C681CP/40

XR88C681N/40

XR88C681P/28

XR88C681P/40

XR88C681CJ

XR88C681J

Part No.

Pin Package

44 PLCC

40 CDIP

28 PDIP

40 PDIP

28 PDIP

40 PDIP

D Programmable Interrupt Daisy Chain

D 8 General Purpose Outputs (40 Pin DIP and 44 Pin

D 7 General Purpose Inputs with Change of States

D Multi-Drop Mode Compatible with 8051 Nine Bit

D On-Chip Oscillator for Crystal

D Standby Mode to Reduce Operating Power

D Compatible with the Motorola MC2681 and

D Advanced CMOS Low Power Technology

APPLICATIONS

D Multimedia Systems

D Serial to Parallel/Parallel to Serial Converter

D DTE for Modem Communication Systems

The DUART is fabricated using advanced two layer metal,

with a high performance density EPI/CMOS 1.8 process

to provide high performance and low power consumption,

and is packaged in a 40 pin PDIP, a 28 pin PDIP, and a 44

pin PLCC.

PLCC Packages Only)

Detectors on Inputs (40 Pin DIP and 44 Pin PLCC

Packages Only)

Mode

Signetics SCC2692 devices

Temperature Range

-40°C to +85°C

0°C to 70°C

Operating

CMOS Dual Channel

UART (DUART)

June 2006

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