REV. 1.4.0 NOTE: Pin type: I=Input," />
參數(shù)資料
型號(hào)： XR21V1410IL16-F
廠商： Exar Corporation
文件頁(yè)數(shù)： 25/30頁(yè)
文件大小： 0K
描述： IC UART FIFO USB SGL 16QFN
產(chǎn)品培訓(xùn)模塊： UART Product Overview
XR21V141x Full-Speed USB UART Family
產(chǎn)品變化通告： XR21V1410IL16-F Packing Change 26/Jan/2011
特色產(chǎn)品： XR21V141x Full-Speed USB UART
標(biāo)準(zhǔn)包裝： 490
特點(diǎn)： *
通道數(shù)： 1，UART
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(dòng)流量控制功能： 是
安裝類型： 表面貼裝
封裝/外殼： 16-VFQFN 裸露焊盤(pán)
供應(yīng)商設(shè)備封裝： 16-QFN-EP（3x3）
包裝： 散裝
配用： 1016-1299-ND - EVAL BOARD FOR XR21V1410IL
其它名稱： 1016-1300
XR21V1410
4
1-CH FULL-SPEED USB UART
REV. 1.4.0
NOTE: Pin type: I=Input, O=Output, I/O= Input/output, OD=Output Open Drain.
I2C Interface Signals
SDA
11
I/O
OD
I2C-controller data input/output (open-drain). An optional external I2C
EEPROM can be used to store default configurations upon power-up including
the USB Vendor ID and Device ID. See
Table 3. A pull-up resistor (typically
4.7 to 10k Ohms) is required.
If an EEPROM is not used, this pin can be used with the SCL pin to select the
Remote Wake-up and Power modes. An external pull-up or pull-down resistor
is required. See
Table 2
SCL
12
I/O
OD
I2C-controller serial input clock. An optional external I2C EEPROM can be
used to store default configurations upon power-up including the USB Vendor
ID and Device ID. See
Table 3. A pull-up resistor (typically 4.7 to 10k Ohms)
is required.
If an EEPROM is not used, this pin can be used with the SDA pin to select the
Remote Wake-up and Power modes. An external pull-up or pull-down resistor
is required. See
Table 2
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 differently for a low power device and a high power device.
Low-power device (<= 1 unit load or 100 mA i.e. bMaxPower <= 0x32): LOW-
POWER 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 config-
ure the polarity of the LOWPOWER output during suspend mode. An external
(10K) pull-up resistor will cause the LOWPOWER pin to be asserted HIGH dur-
ing suspend mode. An external (3.3K) pull-down resistor will cause the LOW-
POWER pin to be asserted LOW during suspend mode.
Power / Ground Signals
VCC
16
Pwr +3.3V power supply.
GND
1, 13
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
connected to GND on the PCB. The thermal pad size on the PCB should be
the approximate 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
16-QFN
PIN #
TYPE
DESCRIPTION
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