【产品】高速USB转接芯片CH347，内置480Mbps高速USB设备接口，外围元器件只需晶振和电容

时间： 2022-07-05 来源：沁恒

技术问答

沁恒推出的CH347是一款高速USB总线转接芯片，通过USB总线提供异步串口、l²C同步串行接口、SPl同步串行接口和JTAG接口等。内置480Mbps高速USB设备接口，外围元器件只需晶振和电容。内置EEPROM，可配置工作模式、芯片VID、PID、最大电流值、厂商和产品信息字符串等参数。单一3.3V供电，提供TSSOP-20无铅封装，兼容RoHS。多种工作模式，适应高速USB转接应用需求。可根据行业批量需求进行功能性定制。

在异步串口方式下，CH347提供了2个高速串口，支持RS485串口收发使能控制、硬件流控和常用的MODEM联络信号，用于为计算机扩展异步串口，或者将普通的串口设备或者MCU直接升级到USB总线。

在同步串行接口方式下，CH347提供了1个2线l²C接口（SCL线、SDA线）和1个4线SPI接口（SCS线、SCK/CLK线、MISO/SDI/DIN线、MOSI/SDO/DOUT线），用于为计算机扩展2线或4线同步串行接口，操作EEPROM、FLASH和传感器等器件。

在JTAG接口方式下，CH347提供了1个JTAG接口，支持4线或5线接口（TMS线、TCK线、TDI线、TDO线和TRST线），用于为计算机扩展JTAG接口，操作CPU、DSP、FPGA和CPLD等器件。

图 1

特点

●异步串口

内置固件，仿真标准串口，用于升级原串口外围设备，或者通过USB增加额外串口。

计算机端Windows操作系统下的串口应用程序完全兼容，无需修改。

硬件全双工串口，内置独立的收发缓冲区，通讯波特率支持1200bps~9Mbps。

串口支持8个数据位，支持奇校验、偶校验以及无校验，支持1或2停止位。

每个串口内置12K字节的接收FIF0，4K字节的发送FIFO。

支持常用的MODEM联络信号RTS、DTR、DCD、RI、DSR、CTS。

支持CTS和RTS硬件自动流控。

支持半双工，提供串口正在发送状态指示TNOW，可用于控制RS485收发切换。

支持最多8路GP10输入输出功能。

通过外加电平转换器件，支持RS232、RS485、RS422等接口。

●I²C同步串行接口

作为Host/Master 主机模式。

提供SCL和SDA两根信号线，支持4种传输速度。

通过计算机API配合，可灵活操作2线接口的A/D、D/A、EEPROM和传感器等器件。

●SPI同步串行接口

作为Host/Master 主机模式。

提供SCS线、SCK/CLK线、MISO/SDI/DIN线、MOSI/SDO/DOUT四根信号线。

支持2根片选信号线，可分时操作2个SPI接口设备。支持8位/16位数据结构，支持MSB和LSB传输。

支持SPI模式0/1/2/3，支持传输频率配置，传输频率可达36MHz。

支持硬件DMA发送和接收。

通过计算机API配合，可灵活操作4线接口的FLASH、MCU、传感器等器件。

●JTAG接口

作为Host/Master主机模式。

JTAG接口提供TMS线、TCK线、TDI线、TD0线和TRST线（可选）。

支持高速USB数据传输。

通过计算机API配合，可灵活操作CPU、DSP、FPGA、CPLD、MCU等器件。

绝对最大值（临界或者超过绝对最大值将可能导致芯片工作不正常甚至损坏）

表 1

电气参数（测试条件：T_A=25℃，V_CC=3.3V，不含USB引脚）

表 2

封装

表 2

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本文由三年不鸣转载自沁恒，原文标题为:高速USB转接芯片CH347，本站所有转载文章系出于传递更多信息之目的，且明确注明来源，不希望被转载的媒体或个人可与我们联系，我们将立即进行删除处理。

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CH334U IC RoHS (SGS) Test Report (CANEC2304439901)

型号- CH32V103C6T6,CH32F103VCT6,CH32F205RBT6,CH32V103VBT6,CH370,CH251,CH372,CH132,CH374,CH252,CH376,CH375,CH378,CH32V107RCT6,CH32V208WBU6,CH32V403CBT6,CH32V003J4M6,CH32F103C6T6,CH382,CH384,CH32V305WBU6,CH237,CH358,CH32F107RCT6,CH236,CH357,CH32F103C8U6,CH238,CH359,CH32L103J4M6,CH32V103VCT6,CH590,CH350,CH471,CH592,CH591,CH231,CH352,CH351,CH472,CH593,CH233,CH354,CH232,CH353,CH235,CH356,CH234,CH355,CH248,CH247,CH368,CH249,CH32V107RBT6,CH32V203G6U6,CH482,CH360,CH481,CH242,CH484,CH241,CH483,CH244,CH365,CH486,CH122,CH243,CH364,CH246,CH367,CH245,CH366,CH457,CH578,CH3232,CH335,CH456,CH577,CH32V303VCT6,CH217,CH338,CH459,CH337,CH458,CH579,CH334U,CH339,CH32V003A4M6,CH32V405RBT6,CH570,CH330,CH451,CH572,CH450,CH571,CH332,CH453,CH574,CH331,CH452,CH573,CH213,CH334,CH455,CH576,CH454,CH575,CH226,CH347,CH225,CH228,CH227,CH348,CH32V403G6U6,CH32V407VCT6,CH32L103G6U6,CH581,CH341,CH462,CH583,CH340,CH582,CH32F208WBU6,CH343,CH464,CH221,CH342,CH463,CH224,CH345,CH344,CH465,CH314,CH556,CH313,CH555,CH316,CH558,CH315,CH557,CH318,CH317,CH438,CH559,CH319,CH32L103F4U6,CH32F103VBT6,CH552,CH32L103FBP6,CH551,CH312,CH554,CH311,CH432,CH553,CH446,CH567,CH445,CH448,CH569,CH447,CH568,CH449,CH32F207VCT6,CH440,CH561,CH321,CH442,CH563,CH441,CH562,CH323,CH444,CH565,CH322,CH443,CH564,CH413,CH534,CH412,CH533,CH536,CH538,CH537,CH539,CH32V103R8T6,CH9936,CH9937,CH32V203F8U6,CH32V403C6T6,CH530,CH32V203G8R6,CH411,CH532,CH410,CH531,CH424,CH545,CH423,CH544,CH547,CH546,CH549,CH548,CH32F103R8T6,CH32V403F8P6,CH32V407RCT6,CH541,CH32L103CBT6,CH540,CH422,CH543,CH421,CH542,CH633,CH632,CH635,CH32V003F4P6,CH634,CH516,CH637,CH636,CH639,CH638,CH32L103F4P6,CH32V307RCT6,CH32L103CBU6,CH631,CH32V203G8P6,CH523,CH522,CH643,CH525,CH524,CH527,CH526,CH529,CH528,CH32V203F6P6,CH521,CH642,CH520,CH641,CH32F107RBT6,CH32F203CBT6,CH32V105RBT6,CH32V103R6T6,CH32V403G8P6,CH622,CH621,CH32V003F4U6,CH32F103R6T6,CH32F105RCT6,CH32V403F6P6,CH32L103G8P6,CH32V105RCT6,CH32V403F8U6,CH32V403G8R6,CH32V303CBT6,DM7407,CH32L103F8U6,CH32V305FBP6,CH32L103F6P6,CH32V405FBP6,CH32L103G8R6,CH32V403K6T6,CH9415,CH9413,CH9414,CH9412,CH32F107VBT6,CH8572,CH8571,CH32F203C8T6,CH8570,CH9884,CH32V208RBT6,CH32L103C6T6,CH32V305RBT6,CH9516,CH9514,CH9515,CH9512,CH9513,CH9511,CH32V208GBU6,CH32L103F8P6,CH9882,CH32V203C8T6,CH9626,CH9627,CH9624,CH9625,CH9622,CH9623,CH32F105RBT6,CH9628,CH9629,CH32F203C8U6,CH32V203C8U6,CH9578,CH9576,CH9577,CH32V405WBU6,CH32V403C8T6,CH32F103RCT6,CH32V103RBT6,CH9100,CH9342,CH32F203C6T6,CH9341,CH9102,CH9344,CH9101,CH9343,CH9463,CH9340,CH9328,CH9327,CH9569,CH9329,CH9326,CH9565,CH9325,CH9445,CH9566,CH32V107VCT6,CH32L103C8T6,CH32V403C8U6,CH32F208RBT6,CH9331,CH9574,CH9330,CH9575,CH9573,CH32F203VCT6,CH9317,CH9318,CH9438,CH9435,CH9436,CH9315,CH9433,CH9434,CH32F107VCT6,CH32L103C8U6,CH32V103RCT6,CH9320,CH32V203C6T6,CH32V307VCT6,CH9426,CH32V107VBT6,CH32V403VCT6,CH9431,CH9552,CH9432,CH32V203F8P6,CH32V303RCT6,CH32L103K6T6,CH32F203K8T6,CH9144,CH32L103A4M6,CH9143,CH9145,CH9140,CH9142,CH9141,CH9126,CH32V407WCU6,CH32F105VCT6,CH32F203RCT6,CH9375,CH9374,CH9371,CH9370,CH9373,CH9130,CH9372,CH32V303RBT6,CH32F103RBT6,CH32V203K8T6,CH9122,CH9121,CH9120,CH32V307WCU6,CH9104,CH9346,CH9103,CH9345,CH32V403RCT6,CH32F203RBT6,CH9232,CH9110,CH9234,CH9230,CH9350,CH32V203RBT6,CH32V103C8T6,CH32V403K8T6,CH32L103K8T6,CH32F103C8T6,CH32V403RBT6,CH32V103C8U6,CH32V105VCT6,CH181,CH183,CH182,CH32V208CBU6,CH390,CH392,CH32V203K6T6,CH394,CH9165,CH396,CH395,CH32L103GBU6,CH398,CH397,CH9161,CH32F105VBT6,CH32V105VBT6,CH9397,CH9150,CH9153,CH9152

测试报告 - 沁恒 - 31 Mar 2023 PDF 英文下载

沁恒USB转多串口芯片选型表

沁恒USB转多串口芯片选型表提供USB高速/全速转串口系列芯片，可实现USB转1/2/4/8路串口，支持串口I/O独立供电，支持VCP/HID/CDC/AOA转串口，VCP串口支持硬件流控和高波特率大数据连续传输，部分型号支持VID/PID/String等内容配置，支持Windows/Linux/Android/macOS等操作系统。