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參數(shù)資料
| 型號： | XR20M1172IL32-F |
| 廠商： | Exar Corporation |
| 文件頁數(shù)： | 1/55頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC UART FIFO I2C/SPI 64B 32QFN |
| 標準包裝： | 490 |
| 特點： | * |
| 通道數(shù)： | 2，DUART |
| FIFO's： | 64 字節(jié) |
| 規(guī)程： | RS485 |
| 電源電壓： | 1.62 V ~ 3.63 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： | 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 |
| 其它名稱： | 1016-1477 XR20M1172IL32-F-ND |
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Exar Corporation 48720 Kato Road, Fremont CA, 94538 (510) 668-7000 FAX (510) 668-7017 www.exar.com
XR20M1172
TWO CHANNEL I2C/SPI UART WITH 64-BYTE FIFO
OCTOBER 2013
REV. 1.2.0
GENERAL DESCRIPTION
The XR20M11721 (M1172) is a high performance two
channel
universal
asynchronous
receiver
and
transmitter (UART) with 64 byte TX and RX FIFOs
and a selectable I2C/SPI slave interface. The M1172
operates from 1.62 to 3.63 volts. The standard
features include 16 selectable TX and RX FIFO
trigger levels, automatic hardware (RTS/CTS) and
software (Xon/Xoff) flow control, and a complete
modem interface. Onboard registers provide the user
with operational status and data error flags. An
internal
loopback
capability
allows
system
diagnostics. Additional enhanced features includes a
programmable fractional baud rate generator and 8X
and 4X sampling rate that allows for a maximum baud
rate of 16 Mbps at 3.3V. The M1172 is available in the
32-pin QFN and 28-pin TSSOP packages. The 32-
pin QFN package has the EN485# and ENIR# pins to
allow the UART to power-up in the Auto RS485 mode
or the Infrared mode.
NOTE: 1 Covered by U.S. Patent #5,649,122
APPLICATIONS
Portable Appliances
Battery-Operated Devices
Cellular Data Devices
Factory Automation and Process Controls
FEATURES
1.62 to 3.6 Volt Operation
Selectable I2C/SPI Interface
SPI clock frequency up to
s
18 MHz at 3.3 V
s
16 MHz at 2.5 V
s
8 MHz at 1.8 V
Full-featured UART
s
Data rate of up to 16 Mbps at 3.3 V
s
Data rate of up to 12.5 Mbps at 2.5 V
s
Data rate of up to 8 Mbps at 1.8 V
s
Fractional Baud Rate Generator
s
Transmit and Receive FIFOs of 64 bytes
s
16 Selectable TX and RX FIFO Trigger Levels
s
Automatic Hardware (RTS/CTS) Flow Control
s
Automatic Software (Xon/Xoff) Flow Control
s
Halt and Resume Transmission Control
s
Automatic
RS-485
Half-duplex
Direction
Control Output via RTS#
s
Wireless Infrared (IrDA 1.0 and 1.1) Encoder/
Decoder
s
Automatic sleep mode (< 30 uA at 3.3V)
s
General Purpose I/Os
s
Full modem interface
Crystal oscillator (up to 24MHz) or external clock
(up to 64MHz) input
32-QFN and 28-TSSOP packages
FIGURE 1. XR20M1172 BLOCK DIAGRAM
I 2 C / S P I#
S O
A 0 / C S #
S C K
S D A
E N 4 8 5 #
E N I R #
I R Q #
B R G
X
T
A
L
1
G P I O s
T X A
V C C
1 . 6 2 V – 3 . 6 3 V
U A R T C h a n n e l 2
( S im i la r t o C h a n n e l1 )
U A R T
R e g s
6 4 B y t e
T X F I F O
6 4 B y t e
R X F I F O
C h a n n e l 1
I
2 C / S P I
I n t e r f a c e
G P I O [7 : 0 ]
R X A
R T S A #
C T S A #
C r y s t a l
O s c /
B u f f e r
A 1 / S I
R E S E T #
X
T
A
L
2
C T S B #
R X B
R T S B #
T X B
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XR20M1172IL32-F | 制造商:Exar Corporation 功能描述:IC DUAL UART 16MBPS 3.63V 32-QFN |
| XR20M1172L32-0A-EB | 功能描述:UART 接口集成電路 Supports M1172 32pin QFN, I2C 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 |
| XR20M1172L32-0B-EB | 功能描述:UART 接口集成電路 Supports M1172 32pin QFN, SPI 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 |
| XR20M1280 | 制造商:EXAR 制造商全稱:EXAR 功能描述:I2C/SPI UART WITH 128-BYTE FIFO AND INTEGRATED LEVEL SHIFTERS |
| XR20M1280IL24-F | 功能描述:UART 接口集成電路 1Ch 12C/SPI UART w/ Lvl Shftrs & 4 GPIOs 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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