参数资料
| 型号： | XR19L212IL48-F |
| 厂商： | Exar Corporation |
| 文件页数： | 34/52页 |
| 文件大小： | 0K |
| 描述： | IC UART/TXRX RS232 48QFN |
| 标准包装： | 260 |
| 特点： | * |
| 通道数： | 2，DUART |
| FIFO's： | 64 字节 |
| 规程： | RS232 |
| 电源电压： | 3.3 V ~ 5.5 V |
| 带自动流量控制功能： | 是 |
| 带IrDA 编码器/解码器： | 是 |
| 带故障启动位检测功能： | 是 |
| 带调制解调器控制功能： | 是 |
| 带CMOS： | 是 |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 48-VFQFN 裸露焊盘 |
| 供应商设备封装： | 48-QFN-EP（7x7） |
| 包装： | 托盘 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页当前第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页
XR19L212
4
TWO CHANNEL INTEGRATED UART AND RS-232 TRANSCEIVER
REV. 1.0.1
MODEM OR SERIAL I/O INTERFACE (EIA-232/RS-232 Voltage Levels)
TXDA
33
O
UART Channel A Transmit Data. The TX signal will be LOW (< 1.5V) during reset or idle (no
data).
RXDA
27
I
UART Channel A Receive Data. The RX data input must idle LOW (< 1.5V). This input has
an internal pull-down resistor and can be left unconnected when not used.
RTSA
24
O
UART Channel A Request-to-Send or general purpose outputs. These outputs must be
asserted prior to using auto RTS flow control, see EFR[6], MCR[1] and IER[6].
CTSA
48
I
UART Channel A Clear-to-Send or general purpose inputs. It can be used for auto CTS
flow control, see EFR[7], MSR[4] and IER[7]. This input has an internal pull-down resistor
and can be left unconnected when not used.
TXDB
22
O
UART Channel B Transmit Data. The TX signal will be LOW (< 1.5V) during reset or idle (no
data).
RXDB
25
I
UART Channel B Receive Data. RXDB will be the input signal to the internal UART when
RXBSEL is LOW. If RXB is used, then RXBSEL should be HIGH. The RX data input must
idle LOW (< 1.5V). This input has an internal pull-down resistor and can be left uncon-
nected when not used.
RTSB
3
O
UART Channel B Request-to-Send or general purpose outputs. These outputs must be
asserted prior to using auto RTS flow control, see EFR[6], MCR[1] and IER[6].
CTSB
2
I
UARTChannel B Clear-to-Send or general purpose inputs. It can be used for auto CTS
flow control, see EFR[7], MSR[4] and IER[7]. This input has an internal pull-down resistor
and can be left unconnected when not used.
SERIAL I/O INTERFACE (CMOS/TTL Voltage Levels)
TXB
9
O
UART Channel B Transmit data. This is the TXB output signal from the UART. This pin can
be used to communicate with an external Infrared or RS-422 transceiver if TXDB is unused.
RXB
8
I
UART Channel B Receive data. This is the RXB input signal to the UART. If RXDB is not
used (RXBSEL is HIGH), then this pin can be used to communicate with an external Infra-
red or RS-422 transceiver. If RXDB is used (RXBSEL is LOW), this pin should be left open.
ANCILLARY SIGNALS (CMOS/TTL Voltage Levels)
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
Power-Save (active high). This feature isolates the L212’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 Power-Save Feature section for details.
ACP
20
I
Autosleep for Charge Pump (active HIGH). When this pin is HIGH, the charge pump is shut
off if the L212 is already in partial sleep mode, i.e. the crystal oscillator is stopped.
Pin Descriptions
NAME
48-QFN
PIN#
TYPE
DESCRIPTION
相关PDF资料 |
PDF描述 |
|---|---|
| XR19L220IL40-F | IC UART/TXRX RS232 40QFN |
| XR19L222IL64-F | IC UART/TXRX RS232 64QFN |
| XR19L400IL40-F | IC UART/TXRX RS485 40QFN |
| XR19L402IL48-F | IC UART/TXRX RS485 48QFN |
| XR20M1170IL24TR-F | IC UART FIFO I2C/SPI 64B 24QFN |
相关代理商/技术参数 |
参数描述 |
|---|---|
| XR19L212IL48TR-F | 制造商:Exar Corporation 功能描述:UART 2-CH 64Byte FIFO 5V 48-Pin QFN EP T/R 制造商:Exar Corporation 功能描述:XR19L212IL48TR-F |
| XR19L220 | 制造商:EXAR 制造商全称:EXAR 功能描述:SINGLE CHANNEL INTEGRATED UART AND RS-232 TRANSCEIVER |
| XR19L220_07 | 制造商:EXAR 制造商全称:EXAR 功能描述:SINGLE CHANNEL INTEGRATED UART AND RS-232 TRANSCEIVER |
| XR19L220IL40 | 制造商:EXAR 制造商全称:EXAR 功能描述:SINGLE CHANNEL INTEGRATED UART AND RS-232 TRANSCEIVER |
| XR19L220IL40-0A-EB | 功能描述:界面开发工具 Supports L220 40 pin QFN, ISA Interface RoHS:否 制造商:Bourns 产品:Evaluation Boards 类型:RS-485 工具用于评估:ADM3485E 接口类型:RS-485 工作电源电压:3.3 V |
发布紧急采购，3分钟左右您将得到回复。