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參數資料
型號: XR20V2170IL40-F
廠商: Exar Corporation
文件頁數: 1/49頁
文件大小: 0K
描述: IC UART/TXRX I2C/SPI RS232 40QFN
標準包裝: 490
特點: *
通道數: 1,UART
FIFO's: 64 字節
規程: RS232
電源電壓: 2.97 V ~ 3.63 V
帶自動流量控制功能:
帶故障啟動位檢測功能:
帶調制解調器控制功能:
帶CMOS:
安裝類型: 表面貼裝
封裝/外殼: 40-VFQFN 裸露焊盤
供應商設備封裝: 40-QFN 裸露焊盤(6x6)
包裝: 托盤
其它名稱: 1016-1478
XR20V2170IL40-F-ND
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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