WMSIC Electronic Components

WCH CH9101N

ModelCH9101N
PackageSOP-8
BrandWCH
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
WCH CH9101N
Type
WCH
Minimum package
100 管装

Technical parameters

Electronic Component
Electronic Component
Electronic Component
WCH
Electronic Component
CH9101N
Electronic Component
1
Package
SOP-8
Electronic Component
USB Converter IC
Electronic Component
0.16g
Electronic Component
1
Features
Programmable; Built-in Clock Generator;; Low Power; positions
Electronic Component
BM0257689196
Operating Voltage
1.8V;3.3V;5V;2.5V
Operating Current
3mA
Electronic Component
USB UART
Data
3Mbps
Static Current
50uA
USB
USB 2.0

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

CH9101N 产品概述

CH9101N 是南京沁恒(WCH)面向嵌入式与通信接口应用推出的一款 USB 转 UART 桥接芯片。器件符合 USB 2.0 规范,提供稳定的串口通信能力,支持多种工作电压并兼顾低功耗设计,适合便携式与工业级设备中对 USB 与串口互联的需求。

一、主要功能与特点

  • 应用功能:USB 转 UART(虚拟串口桥接),实现主机与 MCU、传感器、模块等的串口数据交互。
  • USB 协议:USB 2.0 兼容。
  • 数据速率:最高可达 3 Mbps,满足大多数高速串口应用需求。
  • 电源与电平:支持 1.8V、2.5V、3.3V、5V 多种工作电压,方便与不同电平系统直接对接。
  • 低功耗:工作电流典型 3 mA,静态(待机)电流仅 50 μA,适合电池供电场景。
  • 封装:SOP-8 小封装,节省 PCB 面积,便于批量生产与 SMT 工艺。

二、电气参数与系统集成要点

  • 电源管理:器件支持多电压电平,但在系统设计时需保证 VIO 与目标串口器件电平一致,避免电平冲突。
  • 信号接口:通过标准 USB D+/D- 接口与主机通信,UART 端通常提供 TX/RX(以及可选控制信号),具体引脚请参考官方数据手册。
  • 布局建议:USB 侧建议做差分线对称布线与 ESD 保护;靠近电源引脚放置去耦电容以保证电源稳定。
  • 驱动支持:WCH 对常见操作系统提供驱动支持,通常可作为虚拟 COM 端口使用,便于上层软件兼容。

三、典型应用场景

  • 物联网终端:Wi‑Fi/LoRa/蓝牙模块与主控通信调试或升级。
  • 工业控制:PLC、传感器网关、HMI 模块的数据传输及现场维护接口。
  • 消费类电子:智能家电、数码外设与 PC 间的串口桥接。
  • 开发与测试:单片机开发板、调试工具、烧录与日志输出通用接口。

四、设计注意事项与优势总结

  • 注意事项:确认 UART 端波特与协议一致;若应用对抗干扰要求高,建议加入 TVS 与滤波;长期低功耗模式需参考芯片休眠与唤醒策略。
  • 优势:封装小、功耗低、支持多电压和较高数据速率,系统集成成本低,适配性强。CH9101N 在需要在有限空间内实现可靠 USB–UART 转换且注重功耗的设计中具有明显优势。

如需器件引脚定义、评估板示例电路或驱动下载地址,可参考 WCH 官方资料或提供目标应用电路图,我可以帮助进一步优化接入方案。

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