xr20m1280 Exar Corporation, xr20m1280 Datasheet

xr20m1280

Manufacturer Part Number

xr20m1280

Description

I2c/spi Uart With 128-byte Fifo And Integrated Level Shifters

Manufacturer

Exar Corporation

Datasheet

1.XR20M1280.pdf (63 pages)

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

xr20m1280IL24-F

Manufacturer:

EXAR

Quantity:

800

Company:

Meier Automation Equipment Co., Limited

Part Number:

xr20m1280IL24-F

Manufacturer:

EXAR/艾科嘉

Quantity:

20 000

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

xr20m1280IL32-F

Manufacturer:

Exar

Quantity:

490

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

xr20m1280IL40-F

Manufacturer:

Intersil

Quantity:

308

Current page: 1 of 63
Download datasheet (2Mb)

DECEMBER 2010

GENERAL DESCRIPTION

The XR20M1280

SPI

Transmitter (UART) with integrated level shifters and

128 bytes of transmit and receive FIFOs.

For flexibility in a mixed voltage environment, the

M1280 has 4 VCC pins. There is a VCC pin for the

core, a VCC pin for the UART signals, a VCC pin for

the CPU interface signals and a VCC pin for the

GPIO signals. The VCC pins for the UART, GPIO

and I

interface with devices operating at different voltage

levels eliminating the need for external voltage level

shifters.

lower the overall power consumption of applications

that use slower data rates.

The Auto RS-485 Half-Duplex Direction control

feature simplifies both the hardware and software for

half-duplex RS-485 applications. In addition, the

Multidrop mode with Auto Address detection and

Address

performance by simplifying the software routines.

The Independent TX/RX Baud Rate Generator

feature allows the transmitter and receiver to operate

at different baud rates. In addition, the Fractional

Baud Rate Generator feature provides flexibility for

crystal/clock frequencies for generating standard and

non-standard baud rates.

The M1280 has programmable transmit and receive

FIFO trigger levels, automatic hardware and software

flow control, and data rates of up to 24 Mbps. Power

consumption of the M1280 can be minimized by

enabling the sleep mode.

The M1280 has a 16550 compatible register set that

provide users with operating status and control,

receiver error indications, and modem serial interface

controls. An internal loopback capability allows

onboard diagnostics. The M1280 has a selectable

Exar

OTE

C/SPI bus interface.

Corporation 48720 Kato Road, Fremont CA, 94538

C/SPI interface signals allow for the M1280 to

1 Covered by U.S. Patent #5,649,122.

Universal

The VCC pin for the core voltage helps

Byte

Control

(M1280) is a single-channel I

Asynchronous

I2C/SPI UART WITH 128-BYTE FIFO AND INTEGRATED LEVEL SHIFTERS

features

Receiver

increase

PRELIMINARY

and

the

•

(510) 668-7000

FEATURES

•

APPLICATIONS

•

Integrated Level Shifters on CPU interface, UART

and GPIO signals

Selectable I

26MHz maximum SPI clock

24Mbps maximum UART data rate

Up to 16 GPIOs

128-Bytes TX and RX FIFOs

Programmable TX/RX trigger levels

TX/RX FIFO Level Counters

Independent TX/RX Baud Rate Generator

Fractional Baud Rate Generator

Auto RTS/CTS Hardware Flow Control

Auto XON/XOFF Software Flow Control

Auto RS-485 Half-Duplex Direction Control

Multidrop mode w/ Auto Address Detect (RX)

Multidrop mode w/ Address Byte Control (TX)

Sleep Mode with Automatic Wake-up

Infrared (IrDA 1.0 and 1.1) mode

1.62V to 3.63V supply operation

5V tolerant inputs

Crystal oscillator or external clock input

Personal Digital Assistants (PDA)

Cellular Phones/Data Devices

Battery-Operated Devices

Global Positioning System (GPS)

Bluetooth

•

FAX (510) 668-7017

C/SPI bus interface

XR20M1280

•

www.exar.com

REV. P1.1.1

Related parts for xr20m1280

Related keywords

xr20m1280 datasheet
xr20m1280 data sheet
xr20m1280 pdf datasheet
xr20m1280 component
xr20m1280 part
xr20m1280 distributor
xr20m1280 RoHS
xr20m1280 datasheet download