參數(shù)資料
型號(hào)： XR16L2551IM-F
廠商： Exar Corporation
文件頁(yè)數(shù)： 34/49頁(yè)
文件大小： 0K
描述： IC UART FIFO 16B DUAL 48TQFP
標(biāo)準(zhǔn)包裝： 250
特點(diǎn)： *
通道數(shù)： 2，DUART
FIFO's： 16 字節(jié)
規(guī)程： RS232，RS485
電源電壓： 2.25 V ~ 5.5 V
帶自動(dòng)流量控制功能： 是
帶IrDA 編碼器/解碼器： 是
帶故障啟動(dòng)位檢測(cè)功能： 是
帶調(diào)制解調(diào)器控制功能： 是
帶CMOS： 是
安裝類型： 表面貼裝
封裝/外殼： 48-TQFP
供應(yīng)商設(shè)備封裝： 48-TQFP（7x7）
包裝： 托盤(pán)
其它名稱： XR16L2551IM-F-ND
XR16L2551
4
LOW VOLTAGE DUART WITH POWERSAVE
REV. 1.1.3
INTB
(NC)
21
29
O
When 16/68# pin is at logic 1 for Intel bus interface, this output
becomes channel B interrupt output. The output state is defined by the
user and through the software setting of MCR[3]. INTB is set to the
active mode and OP2B# output to a logic 0 when MCR[3] is set to a
logic 1. INTB is set to the three state mode and OP2B# to a logic 1
when MCR[3] is set to a logic 0. See MCR[3].
When 16/68# pin is at logic 0 for Motorola bus interface, this output is
not used and will stay at logic zero level. Leave this output uncon-
nected.
TXRDYA#
-
43
O
UART channel A Transmitter Ready (active low). The output
provides the TX FIFO/THR status for transmit channel A. If it is
not used, leave it unconnected.
RXRDYA#
-
31
O
UART channel A Receiver Ready (active low). This output provides the
RX FIFO/RHR status for receive channel A. If it is not used, leave it
unconnected.
TXRDYB#
-
6
O
UART channel B Transmitter Ready (active low). The output provides
the TX FIFO/THR status for transmit channel B. If it is not used, leave it
unconnected.
RXRDYB#
-
18
O
UART channel B Receiver Ready (active low). This output provides the
RX FIFO/RHR status for receive channel B. If it is not used, leave it
unconnected.
MODEM OR SERIAL I/O INTERFACE
TXA
5
7
O
UART channel A Transmit Data. If it is not used, leave it unconnected.
RXA
4
5
I
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.
RTSA#
23
33
O
UART channel A Request-to-Send (active low) or general purpose out-
put. If it is not used, leave it unconnected.
CTSA#
25
38
I
UART channel A Clear-to-Send (active low) or general purpose input.
This input should be connected to VCC when not used.
DTRA#
-
34
O
UART channel A Data-Terminal-Ready (active low) or general purpose
output. If it is not used, leave it unconnected.
DSRA#
-
39
I
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.
CDA#
-
40
I
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.
RIA#
-
41
I
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.
Pin Description
NAME
32-QFN
PIN #
48-TQFP
PIN #
TYPE
DESCRIPTION
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XR16L2552IJ-0A-EB 功能描述:UART 接口集成電路 Supports L2552 44 ld PLCC, ISA Interface RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel
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