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XR16M2550IL32-F

Description
uart interface IC 1.62v-3.63v 16b fifo temp -45 to 85c
Categorysemiconductor    Other integrated circuit (IC)   
File Size454KB,47 Pages
ManufacturerExar [Exar Corporation]
Environmental Compliance  
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XR16M2550IL32-F Overview

uart interface IC 1.62v-3.63v 16b fifo temp -45 to 85c

XR16M2550
HIGH PERFORMANCE LOW VOLTAGE DUART WITH 16-BYTE FIFO
MAY 2007
REV. 1.0.2
GENERAL DESCRIPTION
The XR16M2550
1
(M2550) is a high performance
dual universal asynchronous receiver and transmitter
(UART) with 16 bytes TX and RX FIFOs. The device
operates from 1.62 to 3.63 volts and is pin-to-pin and
software compatible to the ST16C2550, XR16L2550,
and XR16V2550. It supports Exar’s enhanced
features of selectable FIFO trigger level, automatic
hardware (RTS/CTS) and software flow control, and a
complete modem interface. Onboard registers
provide the user with operational status and data
error flags. An internal loopback capability allows
system diagnostics. Independent programmable
baud rate generators are provided in each channel to
select data rates up to 16 Mbps at 3.3 Volt with 4X
sampling clock. The M2550 is available in 48-pin
TQFP and 32-pin QFN packages.
N
OTE
:
1 Covered by U.S. Patent #5,649,122
FEATURES
1.62 to 3.63 Volt Operation
Pin-to-pin and software compatible to ST16C2550
in the 48-TQFP package
Pin-to-pin and software compatible to XR16L2550
and XR16V2550
Two independent UART channels
Register set is 16550 compatible
Data rate of up to
16 Mbps at 3.3 V
Data rate of up to
12.5 Mbps at 2.5 V
Data rate of up to
8 Mbps at 1.8V
Fractional Baud Rate Generator
Transmit and Receive FIFOs of 16 bytes
Selectable TX and RX FIFO Trigger Levels
Automatic Hardware (RTS/CTS) Flow Control
Automatic Software (Xon/Xoff) Flow Control
Wireless Infrared (IrDA 1.0) Encoder/Decoder
Automatic sleep mode
Full modem interface
APPLICATIONS
Portable Appliances
Telecommunication Network Routers
Ethernet Network Routers
Cellular Data Devices
Factory Automation and Process Controls
F
IGURE
1. XR16M2550 B
LOCK
D
IAGRAM
Device Identification and Revision
Crystal oscillator (up to 24MHz) or external clock
(up to 64MHz) input
48-TQFP and 32-QFN packages
A2:A0
D7:D0
IOR#
IOW#
CSA#
CSB#
INTA
INTB
TXRDYA#
TXRDYB#
RXRDYA#
RXRDYB#
Reset
8-bit Data
Bus
Interface
UART Channel A
UART
Regs
BRG
16 Byte TX FIFO
TX & RX
IR
ENDEC
1.62 to 3.63 Volt VCC
GND
TXA, RXA, DTRA#,
DSRA#, RTSA#,
DTSA#, CDA#, RIA#,
OP2A#
16 Byte RX FIFO
TXB, RXB, DTRB#,
DSRB#, RTSB#,
CTSB#, CDB#, RIB#,
OP2B#
XTAL1
XTAL2
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

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