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XR16V2751IM-F

Description
UART Interface IC W/64 BYTE FIFO
CategoryThe embedded processor and controller    Microcontrollers and processors   
File Size397KB,52 Pages
ManufacturerExar
Environmental Compliance
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XR16V2751IM-F Overview

UART Interface IC W/64 BYTE FIFO

XR16V2751IM-F Parametric

Parameter NameAttribute value
Is it lead-free?Lead free
Is it Rohs certified?conform to
MakerExar
Parts packaging codeQFP
package instructionTFQFP, TQFP48,.35SQ
Contacts48
Reach Compliance Codecompliant
Other featuresALSO OPERATES AT 2.5V SUPPLY AT 50MHZ
Address bus width3
boundary scanNO
maximum clock frequency64 MHz
letter of agreementASYNC, BIT
Data encoding/decoding methodsNRZ
Maximum data transfer rate1 MBps
External data bus width8
JESD-30 codeS-PQFP-G48
JESD-609 codee3
length7 mm
low power modeYES
Humidity sensitivity level3
Number of serial I/Os2
Number of terminals48
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Package body materialPLASTIC/EPOXY
encapsulated codeTFQFP
Encapsulate equivalent codeTQFP48,.35SQ
Package shapeSQUARE
Package formFLATPACK, THIN PROFILE, FINE PITCH
Peak Reflow Temperature (Celsius)260
power supply2.5/3.3 V
Certification statusNot Qualified
Maximum seat height1.2 mm
Maximum supply voltage3.63 V
Minimum supply voltage2.97 V
Nominal supply voltage3.3 V
surface mountYES
technologyCMOS
Temperature levelINDUSTRIAL
Terminal surfaceMatte Tin (Sn)
Terminal formGULL WING
Terminal pitch0.5 mm
Terminal locationQUAD
Maximum time at peak reflow temperature40
width7 mm
uPs/uCs/peripheral integrated circuit typeSERIAL IO/COMMUNICATION CONTROLLER, SERIAL
XR16V2751
HIGH PERFORMANCE DUART WITH 64-BYTE FIFO AND POWERSAVE
SEPTEMBER 2007
REV. 1.0.1
GENERAL DESCRIPTION
The XR16V2751
1
(V2751) is a high performance dual
universal asynchronous receiver and transmitter
(UART) with 64 byte TX and RX FIFOs. The device
operates from 2.25 to 3.6 volts with 5 Volt tolerant
inputs and is pin-to-pin and software compatible to
Exar’s XR16L2751. The device includes 2 additional
capabilities over the XR16V2750: Intel and Motorola
data bus selection and a “PowerSave” mode to
further reduce sleep current to a minimum during
sleep mode. It supports the Exar’s enhanced features
of programmable FIFO trigger level and FIFO level
counters, automatic hardware (RTS/CTS) and
software flow control, automatic RS-485 half duplex
direction control output and a complete modem
interface. An internal loopback capability allows
system diagnostics. Independent programmable
fractional baud rate generators are provided in each
channel to select data rates up to 8 Mbps at 3.3 Volt
and 8X sampling clock. The V2751 is available in a
48-pin TQFP package.
N
OTE
:
1 Covered by U.S. Patent #5,649,122 and #5,949,787
FEATURES
2.25 to 3.6 Volt Operation
5 Volt Tolerant Inputs
Pin-to-pin compatible to Exar’s XR16L2751 in the
48-TQFP package
Two independent UART channels
APPLICATIONS
Register set identical to 16L2751
Data rate of up to
8 Mbps at 3.3 V,
and
6.25 Mbps at 2.5 V
with 8X sampling rate
Fractional Baud Rate Generator
Transmit and Receive FIFOs of 64 bytes
Programmable TX and RX FIFO Trigger Levels
Transmit and Receive FIFO Level Counters
Automatic Hardware (RTS/CTS) Flow Control
Selectable Auto RTS Flow Control Hysteresis
Automatic Software (Xon/Xoff) Flow Control
Automatic RS-485 Half-duplex Direction
Control Output via RTS#
Wireless Infrared (IrDA 1.0) Encoder/Decoder
Automatic sleep mode with wake-up interrupt
Full modem interface
Portable Appliances
Telecommunication Network Routers
Ethernet Network Routers
Cellular Data Devices
Factory Automation and Process Controls
F
IGURE
1. XR16V2751 B
LOCK
D
IAGRAM
PowerSave Feature reduces sleep current to 15
µA
Device Identification and Revision
Crystal oscillator (up to 24MHz) or external clock
(up to 64MHz) input
48-TQFP package
PwrSave
A2:A0
D7:D0
IOR# (VCC)
IOW# (R/W#)
CSA# (CS#)
CSB# (A3)
INTA (IRQ#)
INTB (logic 0)
TXRDYA#
TXRDYB#
RXRDYA#
RXRDYB#
Reset (Reset#)
16/68#
CLKSEL
HDCNTL#
Intel or
Motorola
Data Bus
Interface
*5 Volt Tolerant Inputs
(Except XTAL1)
2.25 to 3.6V VCC
GND
UART Channel A
UART
Regs
BRG
64 Byte TX FIFO
TX & RX
IR
ENDEC
TXA, RXA, DTRA#,
DSRA#, RTSA#,
DTSA#, CDA#, RIA#,
OP2A#
64 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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