XR16L580IL-F Exar Corporation, XR16L580IL-F Datasheet - Page 19
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XR16L580IL-F
Manufacturer Part Number
XR16L580IL-F
Description
UART Interface IC UART
Manufacturer
Exar Corporation
Datasheet
1.XR16L580IL-F.pdf
(52 pages)
Specifications of XR16L580IL-F
Data Rate
1 Mbps
Supply Voltage (max)
5.5 V
Supply Voltage (min)
2.25 V
Supply Current
3 mA
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Package / Case
QFN
No. Of Channels
1
Uart Features
Selectable RX And TX FIFO Trigger Levels, Automatic Software Flow Control, Complete Modem Interface
Supply Voltage Range
2.25V To 5.5V
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
XR16L580IL-F
Manufacturer:
EXAR/艾科嘉
Quantity:
20 000
Part Number:
XR16L580IL-FN
Manufacturer:
EXAR/艾科嘉
Quantity:
20 000
REV. 1.4.1
The L580 UART includes the infrared encoder and decoder compatible to the IrDA (Infrared Data Association)
version 1.0. The IrDA 1.0 standard that stipulates the infrared encoder sends out a 3/16 of a bit wide HIGH-
pulse for each “0” bit in the transmit data stream. This signal encoding reduces the on-time of the infrared LED,
hence reduces the power consumption. See
The infrared encoder and decoder are enabled by setting MCR register bit-6 to a ‘1’. When the infrared feature
is enabled, the transmit data output, TX, idles at logic zero level. Likewise, the RX input assumes an idle level
of logic zero from a reset and power up, see
Typically, the wireless infrared decoder receives the input pulse from the infrared sensing diode on the RX pin.
Each time it senses a light pulse, it returns a logic 1 to the data bit stream. However, this is not true with some
infrared modules on the market which indicate a logic 0 by a light pulse. So the L580 has a provision to invert
the input polarity to accommodate this. In this case, the user can enable MCR bit-2 to invert the IR signal at the
RX pin.
2.17
Infrared Mode
F
IGURE
Receive
IR Pulse
(RX pin)
RX Data
TX Data
Transmit
IR Pulse
(TX Pin)
13. I
SMALLEST 2.25V TO 5.5V UART WITH 16-BYTE FIFO AND POWERSAVE
NFRARED
0
Bit Time
Bit Time
0
1
1/16 Clock Delay
T
RANSMIT
1
0
Figure 13
Figure 13
0
1
Character
Data Bits
D
1
ATA
0
19
Data Bits
3/16 Bit Time
Character
.
below.
0
E
0
NCODING AND
0
1
1 1
1
0
R
0
ECEIVE
1/2 Bit Time
1
1
IRdecoder-
IrEncoder-1
D
ATA
D
ECODING
XR16L580