參數(shù)資料
型號： XR16C2850CJTR-F
廠商： Exar Corporation
文件頁數(shù)： 1/51頁
文件大?。?/td> 0K
描述： IC UART FIFO 128B 44PLCC
標準包裝： 500
特點： *
通道數(shù)： 2，DUART
FIFO's： 128 字節(jié)
規(guī)程： RS232，RS485
電源電壓： 2.97 V ~ 5.5 V
帶自動流量控制功能： 是
帶IrDA 編碼器/解碼器： 是
帶故障啟動位檢測功能： 是
帶調(diào)制解調(diào)器控制功能： 是
帶CMOS： 是
安裝類型： 表面貼裝
封裝/外殼： 44-LCC（J 形引線）
供應(yīng)商設(shè)備封裝： 44-PLCC（16.59x16.59）
包裝： 帶卷 (TR)
Exar Corporation 48720 Kato Road, Fremont CA, 94538 (510) 668-7000 FAX (510) 668-7017 www.exar.com
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XR16C2850
2.97V TO 5.5V DUAL UART WITH 128-BYTE FIFOS
NOVEMBER 2005
REV. 2.1.3
GENERAL DESCRIPTION
The XR16C28501 (2850) is an enhanced dual
universal asynchronous receiver and transmitter
(UART). Enhanced features include 128 bytes of TX
and RX FIFOs, programmable TX and RX FIFO
trigger level, FIFO level counters, automatic (RTS/
CTS) hardware and (Xon/Xoff) software flow control,
automatic RS-485 half duplex direction control output
and data rates up to 6.25 Mbps at 5V and 8X
sampling clock. Onboard status registers provide the user
with operational status and data error flags. An internal
loopback capability allows system diagnostics. The 2850
has a full modem interface and can operate at 2.97V
to 5.5V and is pin-to-pin compatible to Exar’s
ST16C2550 and XR16C2750 except the 48-TQFP
package. The 2850 register set is compatible to the
industry standard ST16C2550 and is available in 48-
pin TQFP and 44-pin PLCC packages.
NOTE: 1 Covered by U.S. Patent #5,649,122 and #5,949,787
APPLICATIONS
Portable Appliances
Telecommunication Network Routers
Ethernet Network Routers
Cellular Data Devices
Factory Automation and Process Controls
FEATURES
Added feature in devices with a top mark date code of
"F2 YYWW" and newer:
■ 5V tolerant inputs
■ 0 ns address hold time (TAH)
Pin-to-pin compatible and functionally compatible to
Exar’s ST16C2550 and XR16L2750 and TI’s
TL16C752B in the 48-TQFP package
Pin-alike Exar’s XR16L2750 and ST16C2550 48-
TQFP package but with additional CLK8/16,
CLKSEL and HDCNTL inputs
Two independent UART channels
■ Register set compatible to 16C550
■ Up to 6.25 Mbps at 5V, and 4 Mbps at 3.3V
■ Transmit and Receive FIFOs of 128 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
■ Auto RS-485 Half-duplex Direction Control
■ Wireless Infrared (IrDA 1.0) Encoder/Decoder
■ Full modem interface
Device Identification and Revision
Crystal oscillator or external clock input
Industrial and commercial temperature ranges
48-TQFP and 44-PLCC packages
FIGURE 1. XR16C2850 BLOCK DIAGRAM
XTAL1
XTAL2
Crystal Osc/Buffer
TXA, RXA, DTRA#,
DSRA#, RTSA#,
DTSA#, CDA#, RIA#,
OP2A#
8-bit Data
Bus
Interface
UART Channel A
128 Byte TX FIFO
128 Byte RX FIFO
BRG
IR
ENDEC
TX & RX
UART
Regs
2.97V to 5.5V VCC
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#
RXRDYB#
CLK8/16
CLKSEL
HDCNTL#
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XR16C2850CM 制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述:
XR16C2850CM-0A-EB 功能描述:UART 接口集成電路 Supports C2850 48 ld TQFP, ISA Interface 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
XR16C2850CM-0B-EB 功能描述:UART 接口集成電路 Supports C2850 48 ld TQFP, PCI Interface 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
XR16C2850CM48 制造商:EXAR 制造商全稱:EXAR 功能描述:3.3V AND 5V DUART WITH 128-BYTE FIFO
XR16C2850CM-F 功能描述:UART 接口集成電路 2.97V-5.5V 128B FIFO temp 0C to 70C; 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
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