参数资料
型号: XR16C2550IJ-F
厂商: Exar Corporation
文件页数: 1/37页
文件大小: 0K
描述: IC UART FIFO 16B DUAL 44PLCC
标准包装: 27
特点: *
通道数: 2,DUART
FIFO's: 16 字节
规程: RS232,RS485
电源电压: 2.97 V ~ 5.5 V
带故障启动位检测功能:
带调制解调器控制功能:
带CMOS:
安装类型: 表面贴装
封装/外壳: 44-LCC(J 形引线)
供应商设备封装: 44-PLCC(16.59x16.59)
包装: 管件
Exar Corporation 48720 Kato Road, Fremont CA, 94538 (510) 668-7000 FAX (510) 668-7017 www.exar.com
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
Portable Appliances
Telecommunication Network Routers
Ethernet Network Routers
Cellular Data Devices
Factory Automation and Process Controls
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
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
FIGURE 1. XR16C2550 BLOCK DIAGRAM
XTAL1
XTAL2
Crystal Osc / Buffer
TXA , RXA, DTRA#,
DSRA#, RTSA#,
DTSA#, CDA#, RIA#,
OP2A#
8- bit Data
Bus
Interface
UART Channel A
16 Byte TX FIFO
16 Byte RX FIFO
BRG
TX & RX
UART
Regs
2.97 V to5.5V
GND
TXB, RXB, DTRB#,
DSRB#, RTSB#,
CTSB#, CDB#, RIB#,
OP2B#
UART Channel B
( same as Channel A )
A2:A0
D7:D0
CSA#
CSB#
INTA
INTB
IOW#
IOR#
Reset
TXRDYA#
TXRDYB#
RXRDYA#
RDRXYB#
*All inputs are 5V tolerant
相关PDF资料
PDF描述
XR16C2850IM-F IC UART FIFO 128B DUAL 48TQFP
XR16C2852IJ-F IC UART FIFO 128B 44PLCC
XR16C850IMTR-F IC UART FIFO 128B 48TQFP
XR16C854IQ-F IC UART FIFO 128B QUAD 100QFP
XR16C864IQ-F IC UART FIFO 128B QUAD 100QFP
相关代理商/技术参数
参数描述
XR16C2550IM 制造商:Exar Corporation 功能描述:
XR16C2550IM-F 功能描述:UART 接口集成电路 UART RoHS:否 制造商:Texas Instruments 通道数量:2 数据速率:3 Mbps 电源电压-最大:3.6 V 电源电压-最小:2.7 V 电源电流:20 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:LQFP-48 封装:Reel
XR16C2550IMTR-F 功能描述:UART 接口集成电路 UART RoHS:否 制造商:Texas Instruments 通道数量:2 数据速率:3 Mbps 电源电压-最大:3.6 V 电源电压-最小:2.7 V 电源电流:20 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:LQFP-48 封装:Reel
XR16C2550IP 制造商:EXAR 制造商全称:EXAR 功能描述:2.97V TO 5.5V DUART WITH 16-BYTE FIFO
XR16C2552 制造商:EXAR 制造商全称:EXAR 功能描述:2.97V TO 5.5V DUAL UART WITH 16-BYTE FIFO