EEWORLDEEWORLDEEWORLD

Part Number

Search

XR16C2550_07

Description
Dual UART with 16-Byte Transmit and Receive FIFOs
Categorysemiconductor    Analog mixed-signal IC   
File Size253KB,37 Pages
ManufacturerExar [Exar Corporation]
Download Datasheet Compare View All

XR16C2550_07 Overview

Dual UART with 16-Byte Transmit and Receive FIFOs

XR16C2550
2.97V TO 5.5V DUART WITH 16-BYTE FIFO
FEBRUARY 2007
REV. 1.0.2
GENERAL DESCRIPTION
The XR16C2550 (2550) is a dual universal
asynchronous receiver and transmitter (UART). The
XR16C2550 is an improved version of the PC16550
UART with higher operating speed and faster access
times. The 2550 provides enhanced UART functions
with 16 byte FIFO’s, a modem control interface, and
data rates up to 4 Mbps. Onboard status registers
provide the user with error indications and
operational status. System interrupts and modem
control features may be tailored by external software
to meet specific user requirements. Independent
programmable baud rate generators are provided to
select transmit and receive clock rates from 50 bps to
4 Mbps. The Baud Rate Generator can be configured
for either crystal or external clock input. An internal
loopback capability allows onboard diagnostics. The
2550 is available in a 44-pin PLCC and 48-pin TQFP
packages. The 2550 is fabricated in an advanced
CMOS process capable of operating from 2.97 volt to
5.5 volt power supply.
APPLICATIONS
FEATURES
2.97 Volt to 5.5 Volt Operation
5 Volt Tolerant Inputs
Pin-to-pin compatible to Exar’s ST16C2450,
XR16L2550 and XR16L2750
Pin-to-pin compatible to TI’s TL16C752B on the 48-
TQFP package
Pin alike XR16C2850 48-TQFP package but
without CLK8/16, CLKSEL and HDCNTL inputs
2 independent UART channels
Portable Appliances
Telecommunication Network Routers
Ethernet Network Routers
Cellular Data Devices
Factory Automation and Process Controls
F
IGURE
1. XR16C2550 B
LOCK
D
IAGRAM
Up to 4 Mbps with external clock of 64 MHz
Up to 1.5 Mbps data rate with a 24 MHz crystal
frequency
16 byte Transmit FIFO to reduce the bandwidth
requirement of the external CPU
16 byte Receive FIFO with error tags to reduce
the bandwidth requirement of the external CPU
4 selectable Receive FIFO interrupt trigger
levels
Modem control signals (CTS#, RTS#, DSR#,
DTR#, RI#, CD#)
Programmable character lengths (5, 6, 7, 8)
with even, odd, or no parity
Crystal oscillator or external clock input
48-TQFP and 44-PLCC packages
A2:A0
D7:D0
IOR#
IOW#
CSA#
CSB#
INTA
INTB
TXRDYA#
TXRDYB#
RXRDYA#
RDRXYB#
Reset
8- bit Data
Bus
Interface
*All inputs are 5V tolerant
2.97 V to 5.5V
GND
UART Channel A
UART
Regs
BRG
16 Byte TX FIFO
TX & RX
16 Byte RX FIFO
TXB, RXB, DTRB#,
DSRB#, RTSB#,
CTSB#, CDB#, RIB#,
OP2B#
XTAL1
XTAL2
TXA , RXA, DTRA#,
DSRA#, RTSA#,
DTSA#, CDA#, RIA#,
OP2A#
UART Channel B
( same as Channel A )
Crystal Osc / Buffer
Exar
Corporation 48720 Kato Road, Fremont CA, 94538
(510) 668-7000
FAX (510) 668-7017
www.exar.com

XR16C2550_07 Related Products

XR16C2550_07 XR16C2550IM XR16C2550IJ XR16C2550
Description Dual UART with 16-Byte Transmit and Receive FIFOs Dual UART with 16-Byte Transmit and Receive FIFOs Dual UART with 16-Byte Transmit and Receive FIFOs Dual UART with 16-Byte Transmit and Receive FIFOs
Watch the keynote speech by Rohde & Schwarz to get a more intuitive understanding of 5G. Fill out the questionnaire to win prizes!
Watch the keynote speech by RohdeSchwarz to get a more intuitive understanding of 5G. Fill out the questionnaire to win prizes!Click to enter the eventEvent time: From now until February 29, 2020 How ...
EEWORLD社区 Integrated technical exchanges
Taking over low-speed parking tasks – 360-degree surround view and automatic parking system
Basic surround view systems provide drivers with visual cues to give them a more complete understanding of their surroundings. Deep learning of video images captured by the car's cameras can provide m...
EEWORLD社区 Analogue and Mixed Signal
[AB32VG1 Development Board Review] Dual Serial Port Communication and Problems
[i=s]This post was last edited by jinglixixi on 2021-9-8 08:18[/i]When creating a project, the serial port 0 of AB32VG1 is used as the system debugging serial port, and the baud rate is set to 1500000...
jinglixixi Domestic Chip Exchange
Share the method of safely measuring 220V mains electricity with an oscilloscope
The most common problems when measuring 220V mains electricity with an oscilloscope: 1. Tripping during measurement; 2. People accidentally get electric shock; 3. The oscilloscope burned during measur...
Micsig麦科信 Integrated technical exchanges
When the STM32F407 PWM is outputting, one interrupt is not completed and the next interrupt is entered, resulting in a disordered output waveform
I am doing a graduation project, using the STM32F407 PWM output function. There is an array containing 117 elements. The first 4 elements are 1, 2, 1, and 3, and the last 113 elements are 0 and 1.Expe...
Aicuicui stm32/stm8
【Example】Wireless serial port module star network networking case
Star Network Technology 01What is a star network? The star network consists of two types of network devices: the central node and the terminal node. The central node is the hub of the entire star netw...
成都亿佰特 RF/Wirelessly

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Room 1530, 15th Floor, Building B, No. 18 Zhongguancun Street, Haidian District, Beijing Telephone: (010) 82350740 Postal Code: 100190
Copyright © 2005-2024 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号