XR20M1172IL32-F Exar Corporation, XR20M1172IL32-F Datasheet - Page 4
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XR20M1172IL32-F
Manufacturer Part Number
XR20M1172IL32-F
Description
IC UART FIFO I2C/SPI 64B 32QFN
Manufacturer
Exar Corporation
Datasheet
1.XR20M1172IG28-F.pdf
(58 pages)
Specifications of XR20M1172IL32-F
Number Of Channels
2, DUART
Package / Case
32-VFQFN Exposed Pad
Features
*
Fifo's
64 Byte
Protocol
RS485
Voltage - Supply
1.62 V ~ 3.63 V
With Auto Flow Control
Yes
With Irda Encoder/decoder
Yes
With False Start Bit Detection
Yes
With Modem Control
Yes
With Cmos
Yes
Mounting Type
Surface Mount
Data Rate
16 Mbps
Supply Voltage (max)
3.6 V
Supply Voltage (min)
1.62 V
Supply Current
250 uA
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
No. Of Channels
2
Uart Features
Tx/Rx FIFO Counters
Supply Voltage Range
1.62V To 3.63V
Operating Temperature Range
-40°C To +85°C
Digital Ic Case Style
QFN
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
XR20M1172IL32-F
Manufacturer:
EXAR/艾科嘉
Quantity:
20 000
XR20M1172
TWO CHANNEL I2C/SPI UART WITH 64-BYTE FIFO
Pin Description
GPIO4/DSRA#
GPIO5/DTRA#
GPIO1/DTRB#
GPIO6/CDA#
RESET#
EN485#
CTSB#
CTSA#
RTSA#
ENIR#
N
IRQ#
SCL
AME
32-QFN
P
16
17
18
19
20
21
22
23
24
25
26
27
IN
#
28-TSSOP
P
18
19
20
21
22
23
24
25
26
27
IN
-
-
#
T
I/O
I/O
I/O
I/O
YPE
O
O
I
I
I
I
I
I
UART Clear-To-Send. This input can be used for Auto CTS Hardware
Flow Control or as a general purpose input. If unused, this pin should
be connected to VCC or GND.
I
selected, the serial clock idles HIGH. When the SPI interface is
selected, the serial clock idles LOW.
Enable IR Mode (internal pull-up resistor). This pin is sampled upon
power-up. If this pin is HIGH, then the TX output and RX input will
behave as the UART transmit data output and UART receive data
input. If this pin is LOW, then the TX output and RX input will behave
as the infrared encoder data output and the infrared receive data input.
Enable Auto RS-485 Half-Duplex Mode (internal pull-up resistor). This
pin is sampled upon power-up. If this pin is HIGH, then the RTS# out-
put can be used for Auto RTS Hardware Flow Control or as a general
purpose output. If this pin is LOW, then the RTS# output is the Auto
RS-485 Half-Duplex direction control pin.
Interrupt output (open-drain, active LOW). For proper operation, a
pull-up resistor is required on this pin.
UART Request-To-Send. This output can be used for Auto RTS Hard-
ware Flow Control, Auto RS-485 Half-Duplex direction control or as a
general purpose output. If unused, this pin should be left uncon-
nected.
General purpose I/O pin or UART Data-Terminal-Ready. If this pin is
an input and is unused, it should be connected to VCC or GND. If this
pin is an output and is unused, it should be left unconnected. See
IOControl[1] and IODir register.
General purpose I/O pin or UART Data-Terminal-Ready. If this pin is
an input and is unused, it should be connected to VCC or GND. If this
pin is an output and is unused, it should be left unconnected. See
IOControl[1] and IODir register.
Reset (active LOW) - A longer than 40 ns LOW pulse on this pin will
reset the internal registers and all outputs. The UART transmitter out-
put will be idle and the receiver input will be ignored.
UART Clear-To-Send. This input can be used for Auto CTS Hardware
Flow Control or as a general purpose input. If unused, this pin should
be connected to VCC or GND.
General purpose I/O pin or UART Data-Set-Ready. If this pin is an
input and is unused, it should be connected to VCC or GND. If this pin
is an output and is unused, it should be left unconnected. See IOCon-
trol[1] and IODir register.
General purpose I/O pin or UART Carrier-Detect. If this pin is an input
and is unused, it should be connected to VCC or GND. If this pin is an
output and is unused, it should be left unconnected. See IOControl[1]
and IODir register.
2
C-bus or SPI serial input clock. When the I
4
D
ESCRIPTION
2
C-bus interface is
REV. 1.0.1