REV. 1.1.3 TXRDYB# - 12 6 O UART channel B Transmitter Ready (active low). The output pro- vide" />
參數(shù)資料
型號: XR16L2550IJ-F
廠商: Exar Corporation
文件頁數(shù): 34/44頁
文件大?。?/td> 0K
描述: IC UART FIFO 16B DUAL 44PLCC
標準包裝: 27
特點: *
通道數(shù): 2,DUART
FIFO's: 16 字節(jié)
規(guī)程: RS232
電源電壓: 2.25 V ~ 5.5 V
帶自動流量控制功能:
帶IrDA 編碼器/解碼器:
帶故障啟動位檢測功能:
帶調制解調器控制功能:
帶CMOS:
安裝類型: 表面貼裝
封裝/外殼: 44-LCC(J 形引線)
供應商設備封裝: 44-PLCC(16.59x16.59)
包裝: 管件
XR16L2550
4
LOW VOLTAGE DUART WITH 16-BYTE FIFO
REV. 1.1.3
TXRDYB#
-
12
6
O
UART channel B Transmitter Ready (active low). The output pro-
vides the TX FIFO/THR status for transmit channel B. If it is not
used, leave it unconnected.
RXRDYB#
-
23
18
O
UART channel B Receiver Ready (active low). This output pro-
vides 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
13
7
O
UART channel A Transmit Data. If it is not used, leave it uncon-
nected.
RXA
4
11
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
36
33
O
UART channel A Request-to-Send (active low) or general pur-
pose 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.
CTSA#
25
40
38
I
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.
DTRA#
-
37
34
O
UART channel A Data-Terminal-Ready (active low) or general
purpose output. If it is not used, leave it unconnected.
DSRA#
-
41
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#
-
42
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#
-
43
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.
OP2A#
-
35
32
O
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 func-
tionality. If it is not used at all, leave it unconnected.
TXB
6
14
8
O
UART channel B Transmit Data. If it is not used, leave it uncon-
nected.
RXB
3
10
4
I
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.
Pin Description
NAME
32-QFN
PIN #
44-PLCC
PIN #
48-TQFP
PIN #
TYPE
DESCRIPTION
相關PDF資料
PDF描述
XR16L2551IM-F IC UART FIFO 16B DUAL 48TQFP
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