【应用】SPI转四串口转接芯片CH9434用在电表集中器上，满足RS485、RS232等串行通信的接口需求

时间： 2023-06-28 来源：世强

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在一个电表集中器项目中，因为MCU的串口数量不足，客户需要一款多路串口扩展芯片，来满足系统下行RS485、RS232等串行通信的接口需求。鉴于此需求，笔者给客户推荐了沁恒的SPI转四串口转接芯片 CH9434，其在该项目中应用的原理框图如下图1所示。

图1 CH9434应用原理框图

CH9434是一款SPI转四串口转接芯片，提供四组全双工的9线异步串口，用于单片机/嵌入式系统扩展异步串口。CH9434包含四个兼容16C550 的异步串口，最高支持4Mbps波特率通讯。最多支持25路GPIO，提供半双工收发自动切换引脚TNOW，其典型应用如下图2所示。

图2 CH9434典型应用

CH9434支持支持波特率范围1200-4000000bps内的通讯波特率设置，完全独立四个异步串口，支持5/6/7/8个数据位以及1/2个停止位，支持奇、偶、无校验、空白0、标志1等校验方式，提供半双工RS485收发使能引脚，SPI最高可达为32Mbit/s，支持低功耗睡眠模式，可通过SPI接口唤醒，外接32M晶体提供时钟，采用QFN48_5X5封装，3.3V供电。

完全独立四个异步串口，兼容16C550并且有所增强，最高支持4Mbps波特率通讯，使得CH9434非常适合在MCU/DSP/嵌入式系统串口扩展、工业自动化RS-485通讯、串口服务器、多串口卡，与蓝牙、4G、WiFi 等串口模块通讯实现无线传输等场合应用。

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型号- CH366Q,CH378Q,CH451L,CH463Q,CH451S,CH32F205RBT6,CH452A,CH331A,CH246D,CH331G,CH343G,CH32F203C8T6,CH355L,CH573F,CH367L,CH440G,CH365P,CH450K,CH353L,CH462Q,CH571K,CH583M,CH32V208WBU6,CH341T,CH32V208RBT6,CH9350L,CH32V003J4M6,CH462X,CH32V305RBT6,CH342F,CH342K,CH221K,CH378L,CH9374B,CH340K,CH352L,CH376T,CH376S,CH340N,CH364P,CH582M,CH9102X-1,CH340T,CH9141K,CH340X,CH32V208GBU6,CH341B,CH341A,CH341F,CH571F,CH32V203C8T6,CH341C,CH450H,CH484M,CH351Q,CH,CH32V203G6U6,CH340E,CH582F,CH32F203C8U6,CH340C,CH32V203C8U6,CH340B,CH243K,CH340G,CH390H,CH334R,CH32V303VCT6,CH334Q,CH334P,CH552T,CH390L,CH334U,CH552P,CH334S,CH32V003A4M6,CH456G,CH335F,CH456K,CH32F203C6T6,CH359L,CH444G,CH456H,CH311L,CH541G,CH9328,CH563Q,CH9329,CH345T,CH454S,CH9326,CH343G(编带),CH334F,CH32F208RBT6,CH358L,CH334H,CH455H,CH455G,CH334G,CH32F203VCT6,CH32F208WBU6,CH552E,CH443K,CH552G,CH455K,CH540G,CH344Q,CH182H,CH182F,CH235S,CH236D,CH32V203C6T6,CH563L,CH442E,CH32V307VCT6,CH224K,CH551G,CH343P,CH181H,CH561Q,CH376T(编带装),CH452L,CH440R,CH9340K,CH9340C,CH247D,CH32F207VCT6,CH344L,CH368L,CH423S,CH32V303RCT6,CH382L,CH217X,CH32V103R8T6,CH370T,CH448F,CH32F203K8T6,CH412A,CH32V203F8U6,CH315G,CH412K,CH9143,CH557Q,CH32V203G8R6,CH9140,CH9142,CH9141,CH545L,CH543T,CH446Q,CH446X,CH9126,CH555Q,CH32F103R8T6,CH32F203RCT6,CH217K,CH568L,CH554T,CH457S,CH32V003F4P6,CH445P,CH9101Y,CH554P,CH32V303RBT6,CH9101N,CH9101R,CH9101U,CH9343G,CH579F,CH543D,CH9101H,CH32V307RCT6,CH32V203K8T6,CH334H(编带),CH9343L,CH555L,CH543K,CH9121,CH422G,CH543G,CH9120,CH32V203G8P6,CH410K,CH567L,CH32V307WCU6,CH579M,CH432Q,CH347T,CH9102X,CH444P,CH541T,CH9103,CH432T,CH541P,CH565W,CH421A,CH554E,CH9344L,CH578M,CH348L,CH554G,CH348Q,CH392F,CH227P,CH32V203F6P6,CH542G,CH9102F,CH32V203RBT6,CH483M,CH241K,CH32F203CBT6,CH32V103C8T6,CH374U,CH374T,CH374S,CH483X,CH549L,CH375C,CH549F,CH375B,CH549G,CH581F,CH9434A,CH32F103C8T6,CH559T,CH32V103C8U6,CH32V003F4U6,CH482X,CH397Y,CH548G,CH374F,CH592F,CH132F,CH548L,CH548N,CH132H,CH374G,CH32V208CBU6,CH384L,CH558T,CH32V303CBT6,CH32V305FBP6,CH547G,CH32V203K6T6,CH397A,CH547F,CH482D,CH397G,CH591D,CH397F,CH457VS,CH591F,CH438L,CH317L,CH559L,CH547L,CH438Q,CH569W,CH395L,CH424Q,CH395Q,CH412Z,CH449F,CH546G,CH372C,CH372B,CH558L,CH546L,CH481D

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描述- 南京沁恒微电子股份有限公司专注于连接技术和微处理器内核研究,是一家基于自研专业接口IP、微处理器内核IP构建芯片的集成电路设计企业。公司致力于为客户提供万物互联、上下互通的芯片及解决方案，主要产品包括USB/蓝牙/以太网接口芯片和连接型/互联型/无线型MCU，产品侧重于连接联网和控制。

型号- CH24X,CH233P,CH36X,CH32X035F8U6,CH32X035G8R6,CH32V103C6T6,CH32F205RBT6,CH370,CH372,CH251,CH343G,CH374,CH132,CH253,CH252,CH376,CH343K,CH375,CH254,CH32V006F8P6,CH378,CH377,CH440G,CH32X035,CH25X,CH32V208WBU6,CH583M,CH341T,CH32V003J4M6,CH32F103C6T6,CH233A,CH342F,CH382,CH32V006E8R6,CH384,CH342K,CH233K,CH37X,CH9374B,CH237,CH236,CH58X,CH32F103C8U6,CH340K,CH231K,CH22X,CH238,CH34X,CH340N,CH582M,CH340T,NET-SER-DT TTL,CH341B,CH341A,CH592,CH341F,CH591,CH231,CH486F,CH230,CH233,CH235,CH35X,CH32X035F7P6,CH368,CH484M,CH230K,CH23X,CH231A,CH32V203G6U6,CH340E,CH582F,CH482,CH481,CH340C,CH484,CH340B,CH483,CH365,CH486,CH364,CH340G,CH246,CH367,CH59X,CH4XX,CH366,CH578,CH334R,CH457,CH577,CH32V303VCT6,CH335,CH334Q,CH456,CH334P,CH338,CH579,CH32V,CH56X,CH334U,CH339,CH32X,CH564Q,CH334S,CH32V003A4M6,CH32X033F8P6,CH32F,CH335F,CH347F,CH32M,CH335J,CH32L,CH565M,CH451,CH571,CH450,CH444G,CH238P,CH453,CH573,CH452,CH334,CH455,CH454,CH347,CH226,CH57X,CH225,CH348,CH32X035G8U6,CH237D,CH9342G,CH334F,CH581,CH583,CH564L,CH334H,CH341,CH220,CH462,CH582,CH32F208WBU6,CH340,CH32X035R8T6,CH564F,CH343,CH342,CH221,CH463,CH334L,CH345,CH224,CH443K,CH344,CH223,CH344Q,CH555,CH557,CH315,CH318,CH54X,CH559,CH317,CH438,NET-485-9120,CH235S,CH32V002系列,CH32M007,CH236D,CH442E,CH552,CH551,CH554,CH432,CH567,CH343P,CH446,CH445,CH569,CH55X,CH448,CH568,CH440R,CH31X,CH449,CH440P,CH9340K,CH9340C,CH32F207VCT6,CH561,CH440,CH563,CH442,CH344L,CH565,CH323,CH444,CH564,CH443,CH412,CH64X,CH338X,CH52X,CH32V103R8T6,CH448F,CH32V203F8U6,CH9103M,CH32V203G8R6,CH532,CH531,CH545,CH423,CH547,CH546,CH446Q,CH53X,CH549,CH446X,CH548,CH32F103R8T6,BLE-DONGLE,CH338F,CH9104L,CH338L,CH541,CH543,CH422,CH32V003F4P6,CH9101Y,CH445P,CH9101N,CH9101R,CH9101U,CH9101H,CH32V307RCT6,CH347T,CH643,CH522,CH9102X,CH525,CH444P,CH645,CH524,CH527,CH528,CH565W,CH9344L,CH348L,BLE-SER-A-ANT,CH348Q,CH32V203F6P6,CH521,CH641,CH9102F,CH645W,CH32F203CBT6,CH32V006K8U6,CH32F207,CH32F205,CH32F203,CH32V003F4U6,CH32F208,CH645F,BLE2U-C-ANT,CH643U,CH643W,CH643Q,CH449X,CH32V303CBT6,CH32L103F8U6,CH32V305FBP6,CH569W,CH32F103,CH449F,CH32L103G8R6,CH643L,CH32X035系列,CH32F203C8T6,CH32V208RBT6,CH32V203系列,CH32V305RBT6,CH32V007系列,NET-232-9120,CH32V208GBU6,CH32L103F8P6,CH32V203C8T6,CH32V307,CH32V305,CH32F203C8U6,CH32V203C8U6,CH32V303,CH9160-DG-R0,BLE-TPT-A-ANT,CH32F203C6T6,BLE2U-A-ANT,CH9343,NET-TTL-9120,CH9328,CH9329,CH9326,CH9445,CH32L103C8T6,CH32F208RBT6,CH32F203VCT6,CH32V005F6U6,CH182H,CH182F,CH32V305GBU6,CH9434,CH32V203C6T6,CH32V307VCT6,CH181H,CH32L103系列,CH32V203F8P6,BLE-TPT-B-ANT,CH32V005D6U6,CH912X,CH32V303RCT6,CH32V005E6R6,CH32V003系列,CH32F203K8T6,NET-SER-DT RS232,CH9143,CH93XX,CH9140,CH9142,CH9141,CH9126,CH32V005F6P6,CH32F203RCT6,NET-SER-DT RS485,CH32L103,CH32V006,CH32V007,CH32V005,CH32V002,CH32V003,CH32X035C8T6,CH32V303RBT6,CH32V203K8T6,CH9121,CH9120,CH32V307WCU6,CH32V303系列,CH32F203RBT6,CH32V203RBT6,CH9350,CH483M,CH32V103C8T6,CH32V005系列,CH592X,CH483X,CH32M系列,CH230A,CH32V317,CH581F,CH32F103C8T6,CH32V103C8U6,CH482X,CH32L103K8U6,CH591R,CH32V208,CH182,CH592F,CH32V103系列,CH32V203,CH592D,CH32V208CBU6,CH914X,CH390,CH32V203K6T6,CH392,CH271,CH591D,CH482D,CH591F,CH275,CH395,CH397,CH38X,BLE232-NEP,CH32V006F8U6,CH32V103,CH39X,CH481D

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型号- CH24X,CH36X,CH32X035F8U6,CH32X035G8R6,CH32V103C6T6,CH32F205RBT6,CH370,CH372,CH343G,CH132,CH374,CH32F203C8T6,CH252,CH376,CH375,CH343K,CH378,CH440G,CH32X035,CH32V208WBU6,CH583M,CH32V208RBT6,CH341T,CH32V003J4M6,CH32F103C6T6,CH32V305RBT6,CH342F,CH382,CH384,CH342K,CH37X,CH9374B,CH237,CH236,CH58X,CH32F103C8U6,CH340K,CH22X,CH34X,NET-232-9120,CH340N,CH582M,CH340T,NET-SER-DT TTL,CH32V208GBU6,CH341B,CH341A,CH32L103F8P6,CH592,CH341F,CH32V203C8T6,CH591,CH231,CH486F,CH351,CH235,CH234,CH35X,CH368,CH32X035F7P6,CH247,CH484M,CH23X,CH32V307,CH32V203G6U6,CH482,CH340E,CH582F,CH32F203C8U6,CH32V305,CH481,CH32V203C8U6,CH340C,CH484,CH32V303,CH340B,CH241,CH483,CH365,CH486,CH364,CH246,CH367,CH340G,CH4XX,CH366,CH457,CH9339,CH578,CH9338,CH32V303VCT6,CH577,CH335,CH456,CH338,CH32V,CH337,CH579,CH56X,CH339,CH32V003A4M6,CH32X033F8P6,CH32F,BLE-TPT-A-ANT,CH32F203C6T6,BLE2U-A-ANT,CH9344,CH9102,CH565M,CH451,CH9101,CH9343,CH571,CH450,CH444G,CH453,CH573,CH452,CH334,CH9340,CH455,NET-TTL-9120,CH454,CH347,CH9328,CH57X,CH563Q,CH226,CH225,CH348,CH9329,CH32X035G8U6,CH9326,CH32L103C8T6,CH9342G,CH32F208RBT6,CH581,CH341,CH462,CH583,CH340,CH32F203VCT6,CH32F208WBU6,CH582,CH343,CH32X035R8T6,CH342,CH221,CH463,CH224,CH345,CH443K,CH344,CH344Q,CH556,CH555,CH558,CH557,CH317,CH438,CH54X,CH559,NET-485-9120,CH319,CH9434,CH32V203C6T6,CH563L,CH442E,CH552,CH32V307VCT6,CH551,CH554,CH224K,CH432,CH343P,CH567,CH446,CH445,CH569,CH55X,CH561Q,CH448,CH568,CH440R,CH31X,CH449,CH440P,CH9340K,CH9340C,CH32F207VCT6,CH440,CH561,CH563,CH32L103系列,CH442,CH344L,CH565,CH444,CH32V203F8P6,CH443,CH412,BLE-TPT-B-ANT,CH32V303RCT6,CH52X,CH32V103R8T6,CH32V003系列,CH448F,CH32F203K8T6,CH32V203F8U6,NET-SER-DT RS232,CH9103M,CH9143,CH93XX,CH9145,CH9140,CH32V203G8R6,CH532,CH9142,CH9141,CH531,CH545,CH424,CH423,CH544,CH547,CH546,CH446Q,CH549,CH53X,CH9126,CH446X,CH548,CH32F103R8T6,BLE-DONGLE,CH32F203RCT6,CH9104L,NET-SER-DT RS485,CH32L103,CH541,CH422,CH543,CH32V003,CH421,CH457S,CH32V003F4P6,CH9101Y,CH445P,CH32V303RBT6,CH32X035C8T6,CH9101N,CH9101R,CH9101U,CH9101H,CH32V307RCT6,CH32V203K8T6,CH9121,CH9120,CH32V307WCU6,CH347T,CH32V303系列,CH643,CH522,CH9102X,CH525,CH444P,CH524,CH527,CH9104,CH9103,CH528,CH565W,CH457C,CH457B,CH9344L,CH348L,BLE-SER-A-ANT,CH348Q,CH32V203F6P6,CH521,CH9350,CH32V203RBT6,CH9102F,CH641,CH483M,CH32F203CBT6,CH32V103C8T6,CH592X,CH483X,CH32L103F7P6,CH91XX,CH581F,CH34X系列,CH32F103C8T6,CH32F207,CH252L,CH32F205,CH32F203,CH32V103C8U6,CH32V003F4U6,CH482X,CH32L103K8U6,CH591R,CH32F208,CH182,CH32V208,CH592F,CH32V103系列,CH32V203,BLE2U-C-ANT,CH32V208CBU6,CH643U,CH643W,CH914X,CH643Q,CH449X,CH32V303CBT6,CH32L103F8U6,CH32V305FBP6,CH390,CH392,CH32V203K6T6,CH58,CH57,CH591D,CH482D,CH591F,CH395,CH274,CH397,CH38X,CH569W,CH315S,BLE232-NEP,CH32F103,CH449F,CH32L103G8R6,CH643L,CH32X035系列,CH32V103,CH39X,CH9150,CH481D

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沁恒（WCH）通讯接口芯片和全栈MCU选型指南

目录- 企业简介接口转换产品 MCU产品选型 USB转串口产品选型低功耗蓝牙系列单片机系列网络系列 USB系列 USB PD协议系列/ Type-C快充系列 PCI/PCIE 系列显示驱动及键盘扫描系列单片机外围系列通讯接口芯片和全栈MCU芯片产品方案

型号- CH24X,CH36X,CH32V103C6T6,CH32F205RBT6,CH370,CH372,CH343G,CH374,CH132,CH32F203C8T6,CH252,CH376,CH343K,CH375,CH378,CH440G,CH583M,CH32V208WBU6,CH32V208RBT6,CH341T,CH32V003J4M6,CH32V203系列,CH32F103C6T6,CH32V305RBT6,CH382,CH342F,CH384,CH342K,CH221K,CH37X,CH9374B,CH237,CH236,CH58X,CH340K,CH32F103C8U6,CH22X,CH34X,NET-232-9120,CH582M,CH340N,CH340T,NET-SER-DT TTL,CH32V208GBU6,CH341B,CH341A,CH341F,CH32V203C8T6,CH231,CH486F,CH351,CH235,CH234,CH35X,CH247,CH368,CH484M,CH23X,CH32V307,CH32V203G6U6,CH582F,CH340E,CH482,CH32V305,CH481,CH32F203C8U6,CH340C,CH484,CH32V203C8U6,CH32V303,CH340B,CH241,CH483,CH365,CH486,CH364,CH340G,CH246,CH367,CH4XX,CH366,CH578,CH457,CH9339,CH577,CH32V303VCT6,CH335,CH456,CH9338,CH579,CH337,CH32V,CH56X,CH339,CH32V003A4M6,CH32F,BLE-TPT-A-ANT,CH32F203C6T6,BLE2U-A-ANT,CH565M,CH451,CH9102,CH9344,CH571,CH450,CH444G,CH9101,CH9343,CH453,CH573,CH452,CH334,CH455,CH9340,NET-TTL-9120,CH454,CH563Q,CH347,CH9328,CH226,CH57X,CH225,CH348,CH9329,CH9326,CH9342G,CH32F208RBT6,CH581,CH583,CH341,CH462,CH582,CH32F203VCT6,CH32F208WBU6,CH340,CH343,CH342,CH221,CH463,CH345,CH224,CH443K,CH344,CH556,CH344Q,CH555,CH558,CH557,CH559,CH317,CH438,CH54X,NET-485-9120,CH9434,CH319,CH224D,CH563L,CH442E,CH32V203C6T6,CH552,CH32V307VCT6,CH551,CH554,CH224K,CH432,CH567,CH343P,CH446,CH445,CH569,CH561Q,CH448,CH55X,CH568,CH440R,CH31X,CH449,CH440P,CH9340K,CH9340C,CH32F207VCT6,CH561,CH440,CH563,CH442,CH344L,CH565,CH444,CH443,CH32V203F8P6,CH412,BLE-TPT-B-ANT,CH32V303RCT6,CH52X,CH32V103R8T6,CH32V003系列,CH448F,CH32F203K8T6,CH32V203F8U6,NET-SER-DT RS232,CH9103M,CH9143,CH93XX,CH9145,CH9140,CH32V203G8R6,CH9142,CH532,CH9141,CH531,CH545,CH424,CH544,CH423,CH547,CH546,CH446Q,CH549,CH9126,CH446X,CH53X,CH548,CH32F103R8T6,BLE-DONGLE,CH32F203RCT6,NET-SER-DT RS485,CH9104L,CH541,CH540,CH543,CH422,CH32V003,CH542,CH421,CH32V003F4P6,CH9101Y,CH445P,CH32V303RBT6,CH9101N,CH9101R,CH9101U,CH9101H,CH32V307RCT6,CH32V203K8T6,CH9121,CH9120,CH32V307WCU6,CH32V303系列,CH347T,CH522,CH9102X,CH444P,CH525,CH524,CH9104,CH527,CH9103,CH528,CH565W,CH9344L,BLE-SER-A-ANT,CH348L,CH348Q,CH32V203F6P6,CH521,CH9350,CH32V203RBT6,CH9102F,CH483M,CH32F203CBT6,CH32V103C8T6,CH483X,CH91XX,CH581F,CH32F103C8T6,CH32F207,CH32F205,CH32F203,CH32V103C8U6,CH32V003F4U6,CH482X,CH32F208,CH181,CH32V208,CH182,CH32V103系列,CH32V203,BLE2U-C-ANT,CH32V208CBU6,CH914X,CH449X,CH32V303CBT6,CH32V305FBP6,CH390,CH392,CH32V203K6T6,CH482D,CH395,CH397,CH38X,CH569W,CH315S,BLE232-NEP,CH32F103,CH449F,CH32V103,CH39X,CH9150,CH481D

2022/12/06 - 沁恒 - 选型指南代理服务技术支持现货查询批量订货

沁恒（WCH）通讯接口芯片和全栈MCU选型指南

目录- 企业简介接口转换产品 MCU产品选型 USB转串口产品选型低功耗蓝牙系列单片机系列网络系列 USB系列 USB PD协议系列 PCI/PCIE 系列显示驱动及键盘扫描系列单片机外围系列产品方案

型号- CH32V103C6T6,CH32F205RBT6,CH343G,CH32F203C8T6,CH343K,CH573F,CH378,CH440G,CH571K,CH32V208WBU6,CH583M,CH32V208RBT6,CH341T,CH32F103C6T6,CH32V305RBT6,CH342F,CH384,CH342K,CH32F103C8U6,CH340K,CH582M,CH340N,CH340T,CH32V208GBU6,CH341B,CH341A,CH571F,CH341F,CH32V203C8T6,CH486F,CH571D,CH368,CH484M,CH32V307,CH582F,CH340E,CH482,CH32F203C8U6,CH32V305,CH481,CH32V203C8U6,CH340C,CH484,CH32V303,CH483,CH486,CH340G,CH246,CH578,CH457,CH32V303VCT6,CH577,CH335,CH456,CH552T,CH579,CH552P,CH577F,CH32F203C6T6,CH9344,CH451,CH450,CH444G,CH453,CH452,CH334,CH455,CH454,CH9328,CH348,CH9329,CH224P,CH9326,CH34B,CH9342G,CH32F208RBT6,CH581,CH583,CH341,CH462,CH32F203VCT6,CH32F208WBU6,CH582,CH340,CH552E,CH343,CH342,CH463,CH552G,CH345,CH224,CH443K,CH344,CH556,CH555,CH558,CH557,CH559,CH317,CH438,CH224D,CH32V203C6T6,CH442E,CH552,CH551,CH554,CH224K,CH551G,CH343P,CH567,CH446,CH445,CH569,CH448,CH568,CH440R,CH449,CH440P,CH573X,CH9340K,CH9340C,CH32F207VCT6,CH440,CH442,CH344L,CH565,CH444,CH443,CH32V303RCT6,CH32V103R8T6,CH448F,CH9103M,CH9143,CH557Q,CH9140,CH532,CH9142,CH545L,CH531,CH9141,CH545,CH544,CH423,CH547,CH546,CH549,CH548,CH32F103R8T6,CH32F203RCT6,CH541,CH540,CH543,CH422,CH542,CH554T,CH445P,CH554P,CH32V303RBT6,CH9101U,CH579F,CH9101H,CH32V307RCT6,CH32V203K8T6,CH555L,CH9121,CH9120,CH579M,CH522,CH9102X,CH525,CH444P,CH524,CH527,CH528,CH578F,CH554E,CH9344L,CH578M,CH348L,CH554G,CH348Q,CH521,CH9102F,CH9350,CH483M,CH32F203CBT6,CH32V103C8T6,CH483X,CH549L,CH549F,CH549G,CH581F,CH32F103C8T6,CH32F207,CH32F205,CH559T,CH32F203,CH32V103C8U8,CH482X,CH32F208,CH548G,CH32V208,CH548L,CH32V203,CH548N,CH32V208CBU6,CH558T,CH32V303CBT6,CH547G,CH392,CH547F,CH482D,CH395,CH559L,CH547L,CH397,CH32F103,CH546G,CH32V103,CH558L,CH546L,CH481D

2022/01 - 沁恒 - 选型指南代理服务技术支持现货查询批量订货

【产品】工作电压3.3V的SPI转四串口控制芯片CH9434，支持多种睡眠模式，SPI最高速率为16MHz

CH9434是沁恒推出的一款SPI转四串口控制芯片，提供四组全双工的9线异步串口，用于单片机/嵌入式系统扩展异步串口。CH9434包含四个兼容16C550的异步串口，最高支持4Mbps波特率通讯。

2022-08-26 - 产品代理服务技术支持现货查询批量订货

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

31 Mar 2023 - 沁恒 - 测试报告代理服务技术支持现货查询批量订货

CH9434EVT Development Source

型号- CH9434

2020-07-17 - 沁恒 - 开发环境(软件/固件) - V1.0 代理服务技术支持现货查询批量订货

CH9434 四串口芯片

型号- CH9434M,CH9434,CH9434A

2022/05/16 - 沁恒 - 数据手册代理服务技术支持现货查询批量订货

CH375B REACH (SGS)测试报告 (SZXEC1900938802)

型号- CH451L,CH9415,CH9413,CH9414,CH9412,CH451S,CH370,CH452A,CH372,CH374,CH376,CH375,CH378,CH9884,CH382,CH384,CH358,CH9516,CH357,CH236,CH9514,CH359,CH9515,CH9512,CH9513,CH9511,CH350,CH471,CH9882,CH352,CH231,CH351,CH472,CH354,CH233,CH353,CH232,CH356,CH235,CH355,CH234,CH9626,CH368,CH9627,CH9624,CH9625,CH9622,CH9623,CH9628,CH9629,CH360,CH242,CH241,CH365,CH244,CH364,CH243,CH367,CH246,CH366,CH245,CH457,CH578,CH3232,CH456,CH577,CH459,CH337,CH458,CH579,CH339,CH9100,CH9342,CH330,CH572,CH9344,CH450,CH571,CH9343,CH9463,CH453,CH574,CH331,CH573,CH455,CH576,CH9340,CH454,CH575,CH9328,CH9327,CH9329,CH9326,CH9565,CH9325,CH9331,CH9330,CH341,CH462,CH340,CH464,CH463,CH345,CH465,CH314,CH556,CH9317,CH555,CH316,CH558,CH315,CH557,CH9318,CH9438,CH318,CH9435,CH317,CH438,CH559,CH9436,CH9433,CH319,CH9434,CH9320,CH552,CH551,CH312,CH554,CH311,CH432,CH553,CH446,CH567,CH445,CH566,CH448,CH9426,CH447,CH452L,CH568,CH449,CH9431,CH9432,CH440,CH561,CH442,CH563,CH441,CH562,CH444,CH565,CH443,CH564,CH413,CH534,CH412,CH533,CH536,CH538,CH537,CH9936,CH9937,CH9144,CH9143,CH9145,CH530,CH411,CH532,CH9142,CH531,CH9141,CH424,CH545,CH423,CH544,CH547,CH546,CH549,CH9126,CH548,CH9375,CH9374,CH541,CH9371,CH540,CH9370,CH422,CH543,CH9373,CH421,CH542,CH9130,CH9372,CH633,CH632,CH635,CH634,CH637,CH636,CH639,CH638,CH9122,CH9121,CH9120,CH631,CH523,CH522,CH525,CH524,CH527,CH526,CH9345,CH529,CH528,CH9232,CH9110,CH9234,CH521,CH9230,CH9350,CH375B,DM7407,CH392,CH9165,CH395,CH9161,CH9397,CH9150

2019年05月15日 - 沁恒 - 测试报告代理服务技术支持现货查询批量订货

沁恒携多款全栈MCU及接口芯片亮相中国电工仪器仪表产业发展技术研讨会及展会

沁恒微电子在电力行业智能化工业应用的长期实践中，积累了丰富的量产经验和成功案例，日前，沁恒微电子携多款全栈MCU及接口芯片精彩亮相中国电工仪器仪表产业发展技术研讨会及展会。

2022-07-09 - 原厂动态代理服务技术支持现货查询批量订货

CH9434四串口芯片数据手册

型号- CH9434M,CH9434

2020/7/17 - 沁恒 - 数据手册代理服务技术支持现货查询批量订货

CH375B RoHS (SGS)测试报告 (SZXEC1900938502)

2019年05月11日 - 沁恒 - 测试报告代理服务技术支持现货查询批量订货

沁恒HUB芯片CH339：集成7口PDUSB HUB+以太网+读卡器+JTAG/UART/SPI/I2C等功能

沁恒CH339是一款多功能HUB芯片，单芯片集成7口USB HUB、百兆以太网、SD读卡器、USB PD和USB转JTAG/UART/SPI/I2C等功能，采用工业级设计，外围精简，适用于计算机和工控机主板及外设、嵌入式系统等场景，可灵活构建集成度高、专业易用的Type-C拓展坞及多功能USB外设方案。搭配CH318可实现高速USB接口高压隔离。