Is anyone familiar with the network transparent chip CH9121?

码农也有趣味

Is anyone familiar with the network transparent chip CH9121? [Copy link]

I have a few questions, can anyone help me?

1. Does the module support MQTT protocol? 2. Does it support remote access? 3. How to choose between its two serial ports? 4. There is also a RUN pin on the chip. What is its function?

chunyang

The questions you asked must be described in detail in the module manual, so take a closer look.

沁恒USB单片机

Hello: 1. CH9121 does not support MQTT protocol for the time being 2. What do you mean by remote access? It does not support chip configuration via web for the time being 3. The configuration software can choose the serial port for configuration 4. Run refers to the running status indicator pin of CH9121. CH9121DS1.PDF (173.56 KB, downloads: 24)

2019-5-29 13:59 上传

点击文件名下载附件

Qinheng has launched a network-to-serial chip with a smaller package and higher cost performance, the CH9120 in QFN28 package.