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參數(shù)資料
| 型號： | XR21V1412IL32TR-F |
| 廠商： | Exar Corporation |
| 文件頁數(shù)： | 29/32頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC USB UART FIFO FULL SPD 32QFN |
| 產(chǎn)品培訓(xùn)模塊： | XR21V141x Full-Speed USB UART Family |
| 標(biāo)準(zhǔn)包裝： | 3,000 |
| 特點： | * |
| 通道數(shù)： | 2，DUART |
| FIFO's： | 128 字節(jié)，384 字節(jié) |
| 規(guī)程： | USB 2.0 |
| 電源電壓： | 2.97 V ~ 3.63 V |
| 帶自動流量控制功能： | 是 |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 32-VFQFN 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 32-QFN 裸露焊盤（5x5） |
| 包裝： | 帶卷 (TR) |
| 配用： | 1016-1301-ND - EVAL BOARD FOR XR21V1412IL |
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XR21V1412
6
2-CH FULL-SPEED USB UART
REV. 1.3.0
NOTE: Pin type: I=Input, O=Output, I/O= Input/output, OD=Output Open Drain.
Miscellaneous Signals
LOWPOWER
2
O
Low power status output. The LOWPOWER pin will be asserted whenever it is not
safe to draw the amount of current from VBUS power requested in the Device Max
Power field of the Configuration Descriptor. The LOWPOWER pin will behave differ-
ently for a low power device and a high power device.
Low-power device (<= 1 unit load or 100 mA i.e. bMaxPower <= 0x32):
LOWPOWER pin is asserted when the USB UART is in suspend mode.
High-power deivce (bMaxPower > 0x32): LOWPOWER pin is
asserted when the USB UART is in suspend mode or when it is not yet
configured.
The LOWPOWER pin will be de-asserted whenever it is safe to draw the
amount of current requested in the Device Maximum Power field.
This pin is sampled momentarily at power-up or at any USB bus reset to configure the
polarity of the LOWPOWER output during suspend mode. An external (10K) pull-up
resistor will cause the LOWPOWER pin to be asserted HIGH during suspend mode.
An external (3.3K) pull-down resistor will cause the LOWPOWER pin to be asserted
LOW during suspend mode.
VCC
4, 13, 24,
31, 32
Pwr
+3.3V power supply.
GND
1, 3, 14,
23, 27,
28
Pwr
Power supply common, ground.
GND
Center
Pad
Pwr
The center pad on the back side of the QFN package is metallic and should be con-
nected to GND on the PCB. The thermal pad size on the PCB should be the approx-
imate size of this center pad and should be solder mask defined. The solder mask
opening should be at least 0.0025" inwards from the edge of the PCB thermal pad.
NAME
32-QFN
PIN #
TYPE
DESCRIPTION
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XR21V1414 | 制造商:EXAR 制造商全稱:EXAR 功能描述:4-CH FULL-SPEED USB UART |
| XR21V1414_10 | 制造商:EXAR 制造商全稱:EXAR 功能描述:4-CH FULL-SPEED USB UART |
| XR21V1414IM-0A-EB | 功能描述:界面開發(fā)工具 Eval Board for XR21V1414IM48-F 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 |
| XR21V1414IM-0B-EB | 功能描述:界面開發(fā)工具 For XR21V1414 TQFP48 USB, RS232;No Cables 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 |
| XR21V1414IM48 | 制造商:EXAR 制造商全稱:EXAR 功能描述:4-CH FULL-SPEED USB UART |
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