參數(shù)資料
型號(hào)： XR16L2750IM
廠商： EXAR CORP
元件分類(lèi)： 微控制器/微處理器
英文描述： 2.25V TO 5.5V DUART WITH 64-BYTE FIFO
中文描述： 2 CHANNEL(S), 6.25M bps, SERIAL COMM CONTROLLER, PQFP48
封裝： 7 X 7 MM, 1 MM HEIGHT, TQFP-48
文件頁(yè)數(shù)： 1/49頁(yè)
文件大小： 602K
代理商： XR16L2750IM
Exar
Corporation 48720 Kato Road, Fremont CA, 94538
(510) 668-7000
FAX (510) 668-7017
www.exar.com
á
XR16L2750
2.25V TO 5.5V DUART WITH 64-BYTE FIFO
SEPTEMBER 2002
REV. 1.0.0
GENERAL DESCRIPTION
The XR16L2750
1
(2750) is a low voltage dual
universal asynchronous receiver and transmitter
(UART) with 5 Volt tolerant inputs. The device
operates from 2.25 to 5.5 Volt supply range and is
pin-to-pin compatible to Exar’s ST16C2550 and
XR16C2850 except the 48-TQFP package. The 2750
register set is compatible to the ST16C2550 and the
XR16C2850 enhanced features. It supports the
Exar’s enhanced features of 64 bytes of TX and RX
FIFOs, 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. 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
6.25 Mbps at 5 Volt and 8X sampling clock. The 2750
is available in 48-pin TQFP and 44-pin PLCC
packages.
N
OTE
:
1 Covered by U.S. Patent #5,649,122 and #5,832,205
APPLICATIONS
Portable Appliances
Telecommunication Network Routers
Ethernet Network Routers
Cellular Data Devices
Factory Automation and Process Controls
FEATURES
2.25 to 5.5 Volt Operation
5 Volt Tolerant Inputs
Pin-to-pin compatible to Exar’s ST16C2550 and
TI’s TL16C752B on the 48-TQFP package
Pin alike XR16C2850 48-TQFP package but
without CLK8/16, CLKSEL and HDCNTL inputs
Two independent UART channels
I
Reg set compatible to 16C2550 and 16C2850
I
Up to 6.25 Mbps at 5 Volt, 4 Mbps at 3.3 Volt,
and 3 Mbps at 2.5 Volt with 8X sampling rate
I
Transmit and Receive FIFOs of 64 bytes
I
Programmable TX and RX FIFO Trigger Levels
I
Transmit and Receive FIFO Level Counters
I
Automatic Hardware (RTS/CTS) Flow Control
I
Selectable Auto RTS Flow Control Hysteresis
I
Automatic Software (Xon/Xoff) Flow Control
I
Automatic
RS-485
Control Output via RTS#
I
Wireless Infrared (IrDA 1.0) Encoder/Decoder
I
Automatic sleep mode
I
Full modem interface
Device Identification and Revision
Crystal oscillator or external clock input
Industrial and commercial temperature ranges
48-TQFP and 44-PLCC packages
Half-duplex
Direction
F
IGURE
1. XR16L2750 B
LOCK
D
IAGRAM
XTAL1
XTAL2
Crystal Osc/Buffer
TXA, RXA, DTRA#,
DSRA#, RTSA#,
DTSA#, CDA#, RIA#,
OP2A#
8-bit Data
Bus
Interface
UART Channel A
64 Byte TX FIFO
BRG
IR
ENDEC
TX & RX
UART
Regs
2.25 to 5.5 Volt VCC
GND
* 5 Volt Tolerant Inputs
2750BLK
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#
RXRDYB#
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XR16L2750IM-F 功能描述:UART 接口集成電路 2.25V-5.5V 64B FIFO temp -45 to 85C;UART RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel
XR16L2750IMTR-F 功能描述:UART 接口集成電路 UART RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel
XR16L2751 制造商:EXAR 制造商全稱(chēng):EXAR 功能描述:2.25V TO 5.5V DUART WITH 64-BYTE FIFO AND POWERSAVE
XR16L2751_05 制造商:EXAR 制造商全稱(chēng):EXAR 功能描述:2.25V TO 5.5V DUART WITH 64-BYTE FIFO AND POWERSAVE
XR16L2751CM 制造商:EXAR 制造商全稱(chēng):EXAR 功能描述:2.25V TO 5.5V DUART WITH 64-BYTE FIFO AND POWERSAVE
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