xr16l2450im Exar Corporation, xr16l2450im Datasheet - Page 4
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xr16l2450im
Manufacturer Part Number
xr16l2450im
Description
Industry Smallest Package Uart With 2.25v To 5.5v Operation
Manufacturer
Exar Corporation
Datasheet
1.XR16L2450IM.pdf
(30 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
xr16l2450im-F
Manufacturer:
EXAR
Quantity:
500
Company:
Part Number:
xr16l2450im-F
Manufacturer:
Exar Corporation
Quantity:
10 000
XR16L2450
2.25V TO 5.5V DUART
PIN DESCRIPTIONS
DSRA#
DSRB#
CTSA#
DTRA#
OP2A#
RTSB#
CTSB#
DTRB#
CDA#
CDB#
N
RIA#
RIB#
RXB
TXB
AME
44-PLCC
P
40
37
41
42
43
35
14
10
27
28
38
25
21
26
IN
#
48-TQFP
P
38
34
39
40
41
32
22
23
35
20
16
21
IN
8
4
#
T
YPE
O
O
O
O
O
I
I
I
I
I
I
I
I
I
UART channel A Clear-to-Send (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 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.
Output Port 2 Channel A - The output state is defined by the user and
through the software setting of MCR[3]. INTA is set to the active mode
and OP2A# output to a logic 0 when MCR[3] is set to a logic 1. INTA is
set to the three state mode and OP2A# to a logic 1 when MCR[3] is set
to a logic 0. This output should not be used as a general output else it
will disturb the INTA output functionality. If it is not used at all, leave it
unconnected.
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 out-
put. If it is not used, leave it unconnected.
UART channel B Clear-to-Send (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 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.
UART channel B 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.
4
D
ESCRIPTION
xr
REV. 1.1.1