xr16l2552im Exar Corporation, xr16l2552im Datasheet - Page 4
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xr16l2552im
Manufacturer Part Number
xr16l2552im
Description
Industry Smallest Package Uart With 2.25v To 5.5v Operation
Manufacturer
Exar Corporation
Datasheet
1.XR16L2552IM.pdf
(47 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
xr16l2552im-F
Manufacturer:
Exar Corporation
Quantity:
10 000
Part Number:
xr16l2552im-F
Manufacturer:
EXAR/艾科嘉
Quantity:
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XR16L2552
2.25V TO 5.5V DUART WITH 16-BYTE FIFO
Pin Description
MODEM OR SERIAL I/O INTERFACE
RXRDYB#
DSRA#
DSRB#
RTSA#
CTSA#
DTRA#
RTSB#
CTSB#
DTRB#
CDA#
CDB#
N
RIA#
RXA
RXB
TXA
TXB
AME
48-TQFP
P
35
36
33
38
34
39
40
41
22
21
18
24
23
25
26
IN
8
#
44-PLCC
P
38
39
36
40
37
41
42
43
26
25
23
28
27
29
30
IN
-
#
T
YPE
O
O
O
O
O
O
O
I
I
I
I
I
I
I
I
I
UART channel B Receiver Ready (active low). This output provides the RX
FIFO/RHR status for receive channel B. This pin is only available on the 48-
pin TQFP package. If it is not used, leave it unconnected.
UART channel A Transmit Data. If it is not used, leave it unconnected.
UART channel A Receive Data. Normal receive data input must idle at logic 1
condition. If it is not used, tie it to VCC or pull it high via a 100k ohm resistor.
UART channel A Request-to-Send (active low) or general purpose output.
This output must be asserted prior to using auto RTS flow control, see EFR[6],
MCR[1] and IER[6]. If it is not used, leave it unconnected.
UART channel A Clear-to-Send (active low) or general purpose input. It can
be used for auto CTS flow control, see EFR[7] and IER[7]. This input should
be connected to VCC when not used.
UART channel A Data-Terminal-Ready (active low) or general purpose output.
If it is not used, leave it unconnected.
UART channel A Data-Set-Ready (active low) or general purpose input. This
input should be connected to VCC when not used. This input has no effect on
the UART.
UART channel A Carrier-Detect (active low) or general purpose input. This
input should be connected to VCC when not used. This input has no effect on
the UART.
UART channel A Ring-Indicator (active low) or general purpose input. This
input should be connected to VCC when not used. This input has no effect on
the UART.
UART channel B Transmit Data. If it is not used, leave it unconnected.
UART channel B Receive Data. Normal receive data input must idle at logic 1
condition. If it is not used, tie it to VCC or pull it high via a 100k ohm resistor.
UART channel B Request-to-Send (active low) or general purpose output.
This output must be asserted prior to using auto RTS flow control, see EFR[6],
MCR[1] and IER[6]. If it is not used, leave it unconnected.
UART channel B Clear-to-Send (active low) or general purpose input. It can
be used for auto CTS flow control, see EFR[7] and IER[7]. This input should
be connected to VCC when not used.
UART channel B Data-Terminal-Ready (active low) or general purpose output.
If it is not used, leave it unconnected.
UART channel B Data-Set-Ready (active low) or general purpose input. This
input should be connected to VCC when not used. This input has no effect on
the UART.
UART channel B Carrier-Detect (active low) or general purpose input. This
input should be connected to VCC when not used. This input has no effect on
the UART.
4
D
ESCRIPTION
xr
REV. 1.1.1