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参数资料
| 型号： | XR21V1412IL32TR-F |
| 厂商： | Exar Corporation |
| 文件页数： | 28/32页 |
| 文件大小： | 0K |
| 描述： | IC USB UART FIFO FULL SPD 32QFN |
| 产品培训模块： | XR21V141x Full-Speed USB UART Family |
| 标准包装： | 3,000 |
| 特点： | * |
| 通道数： | 2，DUART |
| FIFO's： | 128 字节，384 字节 |
| 规程： | USB 2.0 |
| 电源电压： | 2.97 V ~ 3.63 V |
| 带自动流量控制功能： | 是 |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-VFQFN 裸露焊盘 |
| 供应商设备封装： | 32-QFN 裸露焊盘（5x5） |
| 包装： | 带卷 (TR) |
| 配用： | 1016-1301-ND - EVAL BOARD FOR XR21V1412IL |
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XR21V1412
5
REV. 1.3.0
2-CH FULL-SPEED USB UART
GPIOB1/CDB#
21
I/O
UART Channel B general purpose I/O or UART Carrier-Detect input (active low).
This pin has an internal pull-up resistor which is disabled during suspend mode. If
using this GPIO as an input, an external pull-up resistor is required to minimize the
power consumption in the suspend mode.
GPIOB2/DSRB#
20
I/O
UART Channel B general purpose I/O or UART Data-Set-Ready input (active low).
See ”Section 1.5.6, Automatic DTR/DSR Hardware Flow Control” on
page 11. This pin has an internal pull-up resistor which is disabled during suspend
mode. If using this GPIO as an input, an external pull-up resistor is required to mini-
mize the power consumption in the suspend mode.
GPIOB3/DTRB#
19
I/O
UART Channel B general purpose I/O or UART Data-Terminal-Ready output (active
low).
See ”Section 1.5.6, Automatic DTR/DSR Hardware Flow Control”
on page 11. This pin has an internal pull-up resistor which is disabled during sus-
pend mode. If using this GPIO as an input, an external pull-up resistor is required to
minimize the power consumption in the suspend mode.
GPIOB4/CTSB#
18
I/O
UART Channel B general purpose I/O or UART Clear-to-Send input (active low).
See ”Section 1.5.5, Automatic RTS/CTS Hardware Flow Control” on
page 11. This pin has an internal pull-up resistor which is disabled during suspend
mode. If using this GPIO as an input, an external pull-up resistor is required to mini-
mize the power consumption in the suspend mode.
GPIOB5/RTSB#/
RS485B
17
I/O
UART Channel B general purpose I/O or UART Request-to-Send output (active low)
or auto RS-485 half-duplex control. See
“Section 1.5.5, Automatic RTS/CTS
Hardware Flow Control” on page 11 or “Section 1.5.8, Auto RS-485 Half-
Duplex Control” on page 12. This pin has an internal pull-up resistor which is
disabled during suspend mode. If using this GPIO as an input, an external pull-up
resistor is required to minimize the power consumption in the suspend mode.
USB Interface Signals
USBD+
30
I/O
USB port differential data plus. This pin has a 1.5 K Ohm internal pull-up resistor.
USBD-
29
I/O
USB port differential data minus.
I2C Interface Signals
SDA
25
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 resisitor (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
26
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 resisitor (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.
NAME
32-QFN
PIN #
TYPE
DESCRIPTION
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相关代理商/技术参数 |
参数描述 |
|---|---|
| XR21V1414 | 制造商:EXAR 制造商全称:EXAR 功能描述:4-CH FULL-SPEED USB UART |
| XR21V1414_10 | 制造商:EXAR 制造商全称:EXAR 功能描述:4-CH FULL-SPEED USB UART |
| XR21V1414IM-0A-EB | 功能描述:界面开发工具 Eval Board for XR21V1414IM48-F 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 |
| XR21V1414IM-0B-EB | 功能描述:界面开发工具 For XR21V1414 TQFP48 USB, RS232;No Cables 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 |
| XR21V1414IM48 | 制造商:EXAR 制造商全称:EXAR 功能描述:4-CH FULL-SPEED USB UART |
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