【应用】国产USB转串口芯片CH9102X助力智能电表设计,通讯速率最高可达4Mbps
智能电表可以实时采集用户使用的用电量信息,通过无线模块将数据传输给云端服务器供用户随时查询。电表的通讯部分除了使用无线模块将数据传输到云端服务器,还有使用串口接收供电公司的计算机指令,目的是能够控制任意电表的用电关断与数据传输。由于计算机上的串口资源有限,且只能对应单一的设备,USB相对串口,传输速率更快并且支持一对多设备。因此使用USB转串口芯片将串口资源紧缺的计算机能够通过USB的方式传输数据。芯片在电表的内部应用如图一所示:
图一:智能电表内部框图
沁恒的USB转串口芯片CH9102X在智能电表中的应用优势如下:
1、芯片电源电压1.8~5V,宽电压输入范围,适用各种常用供电电压如3.3V、5V;
2、内置独立的收发缓冲区,通讯波特率50bps~4Mbps,相比国外主流USB转接串口芯片,传输速率更快;
3、通过外加电平转换器件,可以提供RS232\RS485\UART等接口,供用户灵活使用;
4、提供QFN24和QFN28无铅封装,可以与国外的大厂产品PIN TO PIN。
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CH芯片的引脚图器件库和封装图
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
沁恒(WCH)通讯接口芯片和全栈MCU选型指南
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沁恒(WCH)USB转串口芯片选型表&Pin To Pin对照表
目录- USB转单/多串口芯片 PinToPin替换型号总表 芯片参数表
型号- PL2303系列,FT232R,PL2303GL,CH9103M,CH343G,CH9143,FT230XQ,CH9102,CH9101,CP210X系列,CY7C65213,CH343K,FT230XS,CH347,CY7C65213系列,FT232RQ,CP2105,CP2104,CH9326,CP2109,CH341T,CP2102N-GQFN24,CP2102N-GQFN28,CH9104L,CH9342G,PL2303GC,CH9101系列,XR21B1422,CH342F,CH342K,CP2102,CH342,CP2101,CH344Q,CH340K,CH9101Y,PL2303HXD,CP210X,CH340N,CH9101N,CH340T,PL2303,CY7C65213(A),CH9101R,XR21V1414,CH9101U,CH9101H,CH341B,CH341A,CH341F,FT230X,FT232RL,CH343P,CH347T,CH9102X,CH9103,CH9340K,CH9340C,CH9344L,CH9102系列,CH340E,CH348L,CH340C,CH340B,CH348Q,CH344L,CH340G,CH9102F
沁恒USB转单串口芯片选型表
沁恒USB转单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。
产品型号
|
品类
|
串口数
|
USB
|
驱动类型
|
峰值最高波特率(Mbps)
|
流控连续波特率(Mbps)
|
硬件流控
|
自动控制RS485
|
USB配置
|
IO电压(V)
|
MUC电压(V)
|
省电双供电&IO防倒灌
|
MODEM信号(兼GPIO和其他接口)
|
内置时钟
|
温度范围(℃)
|
封装
|
内核
|
CH343P
|
USB转单串口芯片
|
1
|
全速
|
VCP/CDC
|
6Mbps
|
6Mbps
|
√
|
√
|
内置
|
5V/3.3V/2.5V/1.8V
|
5V/3.3V/2.5V/1.8V
|
√
|
RTS/CTS/DTR/DSR/DCD/RI
|
√
|
-40~+85℃
|
QFN16
|
第3代
|
选型表 - 沁恒 立即选型
沁恒(WCH)USB转串口芯片选型表
描述- 南京沁恒微电子股份有限公司成立于2004年,是一家通讯接口芯片和全栈 MCU 芯片公司。沁恒专注于连接技术和 MCU 内核研究,基于自研收发器 PHY 和处理器 IP 的全栈研发模式,取代传统的外购 IP 整合模式,提供以太网、蓝牙无线、 USB 和 PCI 类等接口芯片,及集成上述接口的连接型互联型/无线型全栈 MCU +单片机。
型号- CH344Q,CH340K,CH340N,CH340T,CH9101U,CH9101H,CH341B,CH341A,CH9103M,CH341F,CH343G,CH9143,CH343K,CH343P,CH347,CH9102X,CH9326,CH9340K,CH341T,CH9340C,CH9342G,CH9344L,CH340E,CH342F,CH348L,CH340C,CH340B,CH342K,CH348Q,CH344L,CH340G,CH9102F
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。
产品型号
|
品类
|
串口数
|
USB
|
驱动类型
|
峰值最高波特率(Mbps)
|
流控连续波特率(Mbps)
|
硬件流控
|
自动控制RS485
|
USB配置
|
IO电压(V)
|
MCU电压(V)
|
省电双供电&IO防倒灌
|
MODEM信号(兼GPIO和其他接口)
|
温度范围(℃)
|
封装
|
内核
|
CH347F
|
USB转多串口芯片
|
1/2
|
480Mbps 高速
|
VCP/CDC/HID
|
9Mbps
|
9Mbps
|
√
|
√
|
内置
|
3.3V/2.5V/1.8V
|
3.3V/2.5V/1.8V
|
√
|
RTS/CTS/DTR
JTAG/SWD/SPI/I2C/GPIO*8
|
-40~+85℃
|
QFN28
|
高速USB+多接口
|
选型表 - 沁恒 立即选型
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