Datasheet > XR21B1421IL28-F

XR21B1421IL28-F

更新时间： 2024-11-01 19:55:39

品牌	Logo	应用领域
艾科嘉 - EXAR		外围集成电路
页数	文件大小	规格书
53页	890K
描述
USB Bus Controller, CMOS, 5 X 5 MM, GREEN, MO-220VHHD-3, QFN-28

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中文翻译

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技术参数
数据手册

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XR21B1421IL28-F 技术参数

是否Rohs认证：	符合	生命周期：	Transferred
包装说明：	HVQCCN,	Reach Compliance Code：	compliant
HTS代码：	8542.31.00.01	风险等级：	5.7
JESD-30 代码：	S-XQCC-N28	长度：	5 mm
端子数量：	28	最高工作温度：	85 °C
最低工作温度：	-40 °C	封装主体材料：	UNSPECIFIED
封装代码：	HVQCCN	封装形状：	SQUARE
封装形式：	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	峰值回流温度（摄氏度）：	NOT SPECIFIED
座面最大高度：	1 mm	最大供电电压：	3.6 V
最小供电电压：	3 V	标称供电电压：	3.3 V
表面贴装：	YES	技术：	CMOS
温度等级：	INDUSTRIAL	端子形式：	NO LEAD
端子节距：	0.5 mm	端子位置：	QUAD
处于峰值回流温度下的最长时间：	NOT SPECIFIED	宽度：	5 mm
uPs/uCs/外围集成电路类型：	BUS CONTROLLER, UNIVERSAL SERIAL BUS	Base Number Matches：	1

XR21B1421IL28-F 数据手册

XR21B1421

Enhanced 1-Ch Full-Speed

USB HID to UART Bridge

FEATURES

General Description

• ±15kV ESD on USBD+/USBD-

• USB 2.0 Compliant, Full-Speed (12Mbps)

• Unique pre-programmed USB serial number

• Internally generated 48MHz core clock

• Enhanced UART features

The XR21B1421 is an enhanced Universal Asynchronous Receiver and

Transmitter (UART) bridge to HID class USB interface. The USB interface

is fully compliant to the USB 2.0 (Full-Speed) specification with 12 Mbps

USB data transfer rate. The USB interface also supports USB suspend,

resume and remote wakeup operations. The USB Vendor ID, Product ID,

power mode, remote wakeup support, maximum power, and numerous

other settings may be programmed in the no-chip OTP memory via the

USB interface using either HID reports or MaxLinear-supplied OTP pro-

gramming tools.

• Baud rates up to 12 Mbps

• Fractional Baud Rate Generator

• 512-byte TX and 512-byte RX FIFOs

• Auto Hardware / Software Flow Control

• Multidrop and Half-Duplex Modes

• Auto RS-485 Half-Duplex Control

• Selectable GPIO or Modem I/O

• Up to 10 GPIOs

• 5V tolerant GPIO inputs

• Suspend state GPIO configuration

• Configurable clock output

The XR21B1421 includes an internal oscillator and does not require an

external crystal/oscillator. Any UART baud rate up to 12 Mbps may be

generated with this internal clock and the fractional baud rate generator.

The UART pins for each port may also be configured as GPIO; direction,

state, output driver type and input pull-up or pull-down resistors are pro-

grammed either through on chip OTP, or on the fly via memory mapped

registers.

• 24-pin or 28-pin QFN package

• Industrial -40°C to +85°C Temperature Range

Large 512-byte TX and RX FIFOs prevent buffer overflow errors and opti-

mize data throughput. Automatic half-duplex direction control and optional

multi drop (9-bit) mode simplify both hardware and software in half-duplex

RS-485 applications.

APPLICATIONS

• Portable Medical Diagnostics

• Blood Glucose Meters

• Health and Fitness Wellness Monitors

• Uninterruptible Power Supplies

• Energy Management Consoles

The XR21B1421 uses the native OS HID driver using HID reports. The

HID reports perform a variety of functions, including device configuration,

transmitting and receiving UART data, and programming of the on-chip

OTP. MaxLinear provides a .dll as an easy to use programming interface

to the HID reports.

The XR21B1421 operates from a single 5V or 3.3V power supply and is

available in a 24 or 28 pin QFN package. When powered with 5V input,

the XR21B1421 supplies a regulated 3.3V output. The 24 pin package

Ordering Information – page 53

has a separate V supply voltage input for the Modem / GPIO pins. The

28 pin package has V internally tied to 3.3V.

Block Diagram

Internal

Oscillator

(48MHz)

Fractional

BRG

512-byte

TX FIFO

512-byte

RX FIFO

USB

USB Slave Interface

Internal

Status and

Control

GPIOs/

Modem IO

Registers

USB

Descriptors

OTP

UART

LDO

3V3

1 / 53

exar.com/XR21B1421

Rev 1C

12 3 4 5 6 7...53

中文翻译

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与XR21B1421IL28-F相关器件

型号	品牌	获取价格	描述	数据表
XR21B1421IL28TR-F	EXAR	获取价格	Enhanced 1-Ch Full-Speed
XR21B1422	EXAR	获取价格	Enhanced 2-Ch Full-Speed USB UART
XR21B1422IL40-0A	EXAR	获取价格	Enhanced 2-Ch Full-Speed USB UART
XR21B1422IL40-F	EXAR	获取价格	USB Bus Controller, CMOS, 6 X 6 MM, GREEN, MO-220VJJD-5, QFN-40
XR21B1422IL40TR-F	EXAR	获取价格	USB Bus Controller, CMOS, 6 X 6 MM, GREEN, MO-220VJJD-5, QFN-40
XR21B1424	EXAR	获取价格	Enhanced 4-Ch Full-Speed USB UART
XR21B1424_17	EXAR	获取价格	Enhanced 4-Ch Full-Speed USB UART
XR21B1424IV64-0A-EVB	EXAR	获取价格	Enhanced 4-Ch Full-Speed USB UART
XR21B1424IV64-F	EXAR	获取价格	USB Bus Controller, CMOS, PQFP64, LQFP-64
XR21B1424IV64TR-F	EXAR	获取价格	USB Bus Controller, CMOS, PQFP64, LQFP-64

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