參數(shù)資料
型號(hào)： XR20V2170L40-0B-EB
廠商： Exar Corporation
文件頁(yè)數(shù)： 1/49頁(yè)
文件大?。?/td> 0K
描述： EVAL BOARD FOR XR20V2170 40QFN
標(biāo)準(zhǔn)包裝： 1
系列： *
Exar Corporation 48720 Kato Road, Fremont CA, 94538 (510) 668-7000 FAX (510) 668-7017 www.exar.com
XR20V2170
I2C/SPI UART WITH 64-BYTE FIFO AND RS232 TRANSCEIVER
JUNE 2011
REV. 1.0.1
GENERAL DESCRIPTION
The XR20V21701 (V2170) is a high performance
universal asynchronous receiver and transmitter
(UART) with 64 byte TX and RX FIFOs, a selectable
I2C/SPI slave interface and RS232 transceiver. The
V2170 operates from 2.97 to 3.63 volts. The
enhanced
features
in
the
V2170
include
a
programmable fractional baud rate generator, an 8X
and 4X sampling rate that allows for a maximum baud
rate of 250 Kbps at 3.3V. 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. The V2170 is
available in the 40-pin QFN.
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
Selectable I2C/SPI Interface
SPI clock frequency up to 18 MHz
Meets true EIA/TIA-232-F Standards from +2.97V
to +3.63V operation
Data rate up to 250 Kbps
45us sleep mode exit (charge pump to full power)
ESD protection for RS-232 I/O pins at
■ +/-15kV - Human Body Model
■ +/-15kV - IEC 61000-4-2, Air-Gap Discharge
■ +/- 8kV - IEC 61000-4-2, Contact Discharge
Full-featured UART
■ Fractional Baud Rate Generator
■ Transmit and Receive FIFOs of 64 bytes
■ 16 Selectable TX and RX FIFO Trigger Levels
■ Automatic Hardware (RTS/CTS) Flow Control
■ Automatic Software (Xon/Xoff) Flow Control
■ Halt and Resume Transmission Control
■ Automatic sleep mode
■ General Purpose I/Os
■ Full modem interface
40-QFN packages
FIGURE 1. XR20V2170 BLOCK DIAGRAM
UA RT
R S -232 T rans c eiv e r
Cry s ta l
Os c /B u ffe r
64 B y te
TX & R X
FIFO
M odem
TX
RX
DS R #
RI #
CD #
C harge P um p
5K
AC
P
C2
+
C2-
C1
+
C1-
VC
C
(2
.9
7–
3.6
3V
)
VR EF +
VR EF -
GND
G P IO [3 :0 ]
I/ O s
GP IOs
BR G
XTAL
1
XT
A
L2
I2 C /S P I
In te rfa c e
SD A
SC K
A0 /C S #
A1 /SI
SO
IR Q #
X R 20V 2170
RT S #
DT R #
CT S #
TX D
RT S
DT R
RX D
CT S
DS R
RI
CD
UA
RT
R
e
gi
st
er
s
I2 C /SPI#
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XR20V2170L40-0A-EB EVAL BOARD FOR XR20V2170 40QFN
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XR20V2172 制造商:EXAR 制造商全稱:EXAR 功能描述:TWO CHANNEL I2C/SPI UART WITH 64-BYTE FIFO AND RS232 TRANSCEIVER
XR20V2172_08 制造商:EXAR 制造商全稱:EXAR 功能描述:TWO CHANNEL I2C/SPI UART WITH 64-BYTE FIFO AND RS232 TRANSCEIVER
XR20V2172IL64 制造商:EXAR 制造商全稱:EXAR 功能描述:TWO CHANNEL I2C/SPI UART WITH 64-BYTE FIFO AND RS232 TRANSCEIVER
XR20V2172IL64-F 功能描述:UART 接口集成電路 Transceiver 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
XR20V2172L64-0A-EB 功能描述:UART 接口集成電路 Supports V2172 64pin 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
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