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參數(shù)資料
| 型號： | XR19L202IL48-F |
| 廠商： | Exar Corporation |
| 文件頁數(shù)： | 34/50頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC UART/TXRX RS232 48QFN |
| 標準包裝： | 260 |
| 特點： | * |
| 通道數(shù)： | 2，DUART |
| FIFO's： | 64 字節(jié) |
| 規(guī)程： | RS232 |
| 電源電壓： | 3.3 V ~ 5 V |
| 帶自動流量控制功能： | 是 |
| 帶IrDA 編碼器/解碼器： | 是 |
| 帶故障啟動位檢測功能： | 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-VFQFN 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 48-QFN-EP（7x7） |
| 包裝： | 托盤 |
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XR19L202
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.
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.
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 L202’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 L202 is already in partial sleep mode, i.e. the crystal oscillator is stopped.
I/M#
23
I
Intel or Motorola Bus Select.
When I/M# pin is HIGH, 16 or Intel Mode, the device will operate in the Intel bus type of
interface.
When I/M# pin is LOW, 68 or Motorola mode, the device will operate in the Motorola bus
type of interface.
RESET
(RESET#)
35
I
When I/M# pin is HIGH for Intel bus interface, this input becomes RESET (active high).
When I/M# pin is LOW for Motorola bus interface, this input becomes RESET# (active low).
A 40 ns minimum active pulse on this pin will reset the internal registers and all outputs of
the UART. The UART transmitter output will be held HIGH, the receiver input will be ignored
and outputs are reset during reset period (see
C2P
C2N
36
34
-
Charge pump capacitors. As shown in
Figure 1, a 0.1 uF capacitor should be placed
between these 2 pins.
C1P
C1N
39
38
-
Charge pump capacitors. As shown in
Figure 1, a 0.1 uF capacitor should be placed
between these 2 pins.
Pin Descriptions
NAME
48-QFN
PIN#
TYPE
DESCRIPTION
相關(guān)PDF資料 |
PDF描述 |
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| XR19L210IL40-F | IC UART/TXRX RS232 40QFN |
| XR19L212IL48-F | IC UART/TXRX RS232 48QFN |
| XR19L220IL40-F | IC UART/TXRX RS232 40QFN |
| XR19L222IL64-F | IC UART/TXRX RS232 64QFN |
| XR19L400IL40-F | IC UART/TXRX RS485 40QFN |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XR19L210 | 制造商:EXAR 制造商全稱:EXAR 功能描述:SINGLE CHANNEL INTEGRATED UART AND RS-232 TRANSCEIVER |
| XR19L210_07 | 制造商:EXAR 制造商全稱:EXAR 功能描述:SINGLE CHANNEL INTEGRATED UART AND RS-232 TRANSCEIVER |
| XR19L210IL40 | 制造商:EXAR 制造商全稱:EXAR 功能描述:SINGLE CHANNEL INTEGRATED UART AND RS-232 TRANSCEIVER |
| XR19L210IL40-0A-EB | 功能描述:界面開發(fā)工具 Supports L210 40 pin QFN, ISA Interface RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類型:RS-485 工具用于評估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V |
| XR19L210IL40-0B-EB | 功能描述:界面開發(fā)工具 Supports L210 40 pin QFN, PCI Interface RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類型:RS-485 工具用于評估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V |
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