參數(shù)資料
型號(hào)： XR16L2751
廠商： Exar Corporation
英文描述： 2.25V TO 5.5V DUART WITH 64-BYTE FIFO AND POWERSAVE
中文描述： 2.25V至5.5V的杜阿爾特64字節(jié)FIFO和省電
文件頁(yè)數(shù)： 5/52頁(yè)
文件大小： 618K
代理商： XR16L2751
XR16L2751
2.25V TO 5.5V DUART WITH 64-BYTE FIFO AND POWERSAVE
REV. 1.0.0
á
5
RXB
4
I
UART channel B Receive Data or infrared receive data. Normal receive data input
must idle at logic 1 condition. The infrared receiver pulses typically idles at logic 0 but
can be inverted by software control prior going in to the decoder, see MCR[6] and
FCTR[2].
RTSB#
22
O
UART channel B Request-to-Send (active low) or general purpose output. This port
must be asserted prior to using auto RTS flow control, see EFR[6], MCR[1],
FCTR[1:0], EMSR[5:4] and IER[6]. For auto RS485 half-duplex direction control, see
FCTR[3] and EMSR[3].
CTSB#
23
I
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.
DTRB#
35
O
UART channel B Data-Terminal-Ready (active low) or general purpose output.
DSRB#
20
I
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
CDB#
16
I
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
RIB#
21
I
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.
OP2B#
9
O
Output Port 2 Channel B - The output state is defined by the user and through the
software setting of MCR[3]. When MCR[3] is set to a logic 1, INTB is set to the level
mode and OP2B# output to a logic 0. When MCR[3] is set to a logic 0, INTB is set to
the three state mode and OP2B# to a logic 1. See MCR[3]. This output must not be
used as a general output when the interrupt output is used else it will disturb the
INTB output functionality.
ANCILLARY SIGNALS
XTAL1
13
I
Crystal or external clock input. This input is not 5V tolerant.
XTAL2
14
O
Crystal or buffered clock output. This output may be use to drive a clock buffer which
can drive other device(s).
PwrSave
12
I
PowerSave (active high). This feature isolates the 2751’s data bus interface from the
host preventing other bus activities that cause higher power drain during sleep mode.
See Sleep Mode with Auto Wake-up and PowerSave Feature section for details.
16/68#
24
I
Intel or Motorola Bus Select.
When 16/68# pin is at logic 1, 16 or Intel Mode, the device will operate in the Intel bus
type of interface.
When 16/68# pin is at logic 0, 68 or Motorola mode, the device will operate in the
Motorola bus type of interface.
CLKSEL
25
I
Baud-Rate-Generator Input Clock Prescaler Select for channel A and B. This input is
only sampled during power up or a reset. Connect to VCC for divide by 1 (default)
and GND for divide by 4. MCR[7] can override the state of this pin following a reset or
initialization. See MCR bit-7 and
Figure 6
in the Baud Rate Generator section.
Pin Description
N
AME
48-TQFP
P
IN
#
T
YPE
D
ESCRIPTION
相關(guān)PDF資料
PDF描述
XR16L2751CM 2.25V TO 5.5V DUART WITH 64-BYTE FIFO AND POWERSAVE
XR16L2751IM 2.25V TO 5.5V DUART WITH 64-BYTE FIFO AND POWERSAVE
XR16L2752 2.25V TO 5.5V DUART WITH 64-BYTE FIFO
XR16L2752CJ 2.25V TO 5.5V DUART WITH 64-BYTE FIFO
XR16L2752IJ 2.25V TO 5.5V DUART WITH 64-BYTE FIFO
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XR16L2751_05 制造商:EXAR 制造商全稱(chēng):EXAR 功能描述:2.25V TO 5.5V DUART WITH 64-BYTE FIFO AND POWERSAVE
XR16L2751CM 制造商:EXAR 制造商全稱(chēng):EXAR 功能描述:2.25V TO 5.5V DUART WITH 64-BYTE FIFO AND POWERSAVE
XR16L2751CM-0A-EB 功能描述:UART 接口集成電路 Supports L2751 48 ld TQFP, 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
XR16L2751CM-0B-EB 功能描述:UART 接口集成電路 Supports L2751 48 ld TQFP, PCI 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
XR16L2751CM-F 功能描述:UART 接口集成電路 UART 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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