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參數(shù)資料
| 型號(hào)： | XR16C2850CM |
| 廠商： | EXAR CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | DUAL UART WITH 128-byte FIFO’s AND RS-485 HALF DUPLEX CONTROL |
| 中文描述： | 2 CHANNEL(S), 6.25M bps, SERIAL COMM CONTROLLER, PQFP48 |
| 封裝： | 7 X 7 MM, 1.40 MM HEIGHT, EIAJ, TQFP-48 |
| 文件頁(yè)數(shù)： | 1/43頁(yè) |
| 文件大?。?/td> | 611K |
| 代理商： | XR16C2850CM |
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EXAR
Corporation 48720 Kato Road, Fremont CA, 94538
(510) 668-7000
FAX (510) 668-7017
www.exar.com
uarttechsupport@exar.com
á
XR16C2850
3.3V AND 5V DUART WITH 128-BYTE FIFO
APRIL 2002
REV. 2.0.0
GENERAL DESCRIPTION
The XR16C2850
1
(2850) is an enhanced dual univer-
sal 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. On-
board status registers provide the user with opera-
tional status and data error flags. An internal loop-
back capability allows system diagnostics. The 2850
has a full modem interface and can operate at 3.3 V
or 5 V 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 44-pin PLCC and 40-pin PDIP packages.
The 40-pin package does not offer TXRDY# and
RXRDY# pins (DMA signal monitoring) otherwise the
three package versions are the same.
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
Pin-to-pin compatible and functionally compatible to
Exar’s ST16C2550 and XR16L2750 and TI’s
TL16C752B on the 44-PLCC package
Pin-alike Exar’s XR16L2750 and ST16C2550 48-
TQFP package but with additional CLK8/16, CLK-
SEL 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
Automatic RS-485 Half-duplex Direction Control
Output
Wireless Infrared (IrDA 1.0) Encoder/Decoder
Automatic sleep mode
Full modem interface
Device Identification and Revision
Crystal oscillator or external clock input
Industrial and commercial temperature ranges
48-TQFP and 44-PLCC packages
F
IGURE
1. XR16C2850 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
128 Byte TX FIFO
128 Byte RX FIFO
BRG
IR
ENDEC
TX & RX
UART
Regs
3.3V or 5V VCC
GND
TXB, RXB, DTRB#,
DSRB#, RTSB#,
CTSB#, CDB#, RIB#,
OP2B#
UART Channel B
(same as Channel A)
A2:A0
D7:D0
IOR#
CSA#
CSB#
INTA
INTB
IOW#
Reset
TXRDYA#
TXRDYB#
RXRDYA#
RXRDYB#
HDCNTL#
CLK8/16
CLKSEL
相關(guān)PDF資料 |
PDF描述 |
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| XR16C2850CP | DUAL UART WITH 128-byte FIFO’s AND RS-485 HALF DUPLEX CONTROL |
| XR16C2850IJ | DUAL UART WITH 128-byte FIFO’s AND RS-485 HALF DUPLEX CONTROL |
| XR16C2850IM | DUAL UART WITH 128-byte FIFO’s AND RS-485 HALF DUPLEX CONTROL |
| XR16C2850IP | DUAL UART WITH 128-byte FIFO’s AND RS-485 HALF DUPLEX CONTROL |
| XR16C2852 | 3.3V AND 5V DUART WITH 128-BYTE FIFO |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)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 |
| XR16C2850CMTR-F | 制造商:Exar Corporation 功能描述:UART 2-CH 128Byte FIFO 3.3V/5V 48-Pin TQFP T/R 制造商:Exar Corporation 功能描述:XR16C2850CMTR-F |
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