參數(shù)資料
型號: XR16M2750IL32-F
廠商: Exar Corporation
文件頁數(shù): 1/53頁
文件大?。?/td> 0K
描述: IC UART FIFO 64B DUAL 32QFN
標準包裝: 490
特點: *
通道數(shù): 2,DUART
FIFO's: 64 字節(jié)
規(guī)程: RS232,RS485
電源電壓: 1.62 V ~ 3.63 V
帶自動流量控制功能:
帶IrDA 編碼器/解碼器:
帶故障啟動位檢測功能:
帶調(diào)制解調(diào)器控制功能:
帶CMOS:
安裝類型: 表面貼裝
封裝/外殼: 32-VFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 32-QFN 裸露焊盤(5x5)
包裝: 托盤
Exar Corporation 48720 Kato Road, Fremont CA, 94538 (510) 668-7000 FAX (510) 668-7017 www.exar.com
XR16M2750
1.62V TO 3.63V HIGH PERFORMANCE DUART WITH 64-BYTE FIFO
AUGUST 2007
REV. 1.0.0
GENERAL DESCRIPTION
The XR16M27501 (M2750) is a high performance
dual universal asynchronous receiver and transmitter
(UART) with 64 byte TX and RX FIFOs. The device
operates from 1.62 to 3.63 volts and is pin-to-pin
compatible to Exar’s ST16C2550 and XR16V2750.
The M2750 register set is identical to the XR16V2750
and is compatible to the ST16C2550 and the
XR16C2850 enhanced features. 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. 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 8 Mbps at 3.3 Volt and 8X
sampling clock. The M2750 is available in 48-pin
TQFP and 32-pin QFN packages.
NOTE: 1 Covered by U.S. Patent #5,649,122
APPLICATIONS
Portable Appliances
Telecommunication Network Routers
Ethernet Network Routers
Cellular Data Devices
Factory Automation and Process Controls
FEATURES
1.62 to 3.63 Volt Operation
Pin-to-pin compatible to Exar’s XR16V2750 and
TI’s TL16C752B in the 48-TQFP package
Two independent UART channels
Data rate of up to 8 Mbps at 3.3 V
Data rate of up to 6.25 Mbps at 2.5 V
Data rate of up to 4 Mbps at 1.8 V
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
Full modem interface
Device Identification and Revision
Crystal oscillator (up to 24MHz) or external clock
(upto 64MHz) input
48-TQFP and 32-QFN packages
FIGURE 1. XR16M2750 BLOCK DIAGRAM
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
1.62 to 3.6 Volt VCC
GND
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#
64 Byte RX FIFO
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