English-Language Summaries for 60 ICs from Chinese Manufacturer Jiangsu Heng Qin Ltd. (WCH)

Ken Boak translates and deciphers datasheets and other text for around 60 ICs from Nanjing, China-based manufacturer Jaingsu Heng Qin (WCH) – ranging from 7-segment LED drivers to I2C I/O expansion chips to multiple UARTs and even an Android Host Interface IC. It’s a very thorough compilation.



You may not know that the CH340 is just one of a series of about 60 ICs produced by Jiangsu Heng Qin, (WCH) in Nanjing, China. These ICs provide very useful circuit functions, at very low cost – yet until recently have been virtually unknown to designers in the West.

WCH are amongst a small group of Chinese and Taiwanese chip manufacturers – including Holtek * and UMC, who produce a vast volume of low cost ICs for some of the most basic, yet essential building block circuit functions. These form the bread and butter devices built into Far Eastern manufactured consumer products, such as MP3 players, telephones, flash drives, USB peripherals etc. Their chips are literally in everything we buy and use. We just don’t get to hear of them so much about them – as we do, of those semiconductor companies founded in the West. (* I will feature Holtek in a later post).

Yet until the CH340 arrived on our shores – there was very little knowledge about any of these Chinese domestic ICs. Data sheets have been often only available in almost impenetrable Chinese language, and even if you did find an interesting device – how and where would you source samples of it, or prototype it with it? – with so very little information available.

Fortunately these barriers to creativity are now becoming a thing of the Past. The Chinese language is no longer a problem – thanks to the almost instantaneous translation available using Google Translate, and there are an increasing number of specialist vendors in southern China, who will gladly source you a few samples and post them over to you. These guys are only a Skype call away – and eager to do business with Western customers. The electronic industry around Shenzhen is unique in that there are literally hundreds of small component vendors who will gladly sell you the parts in individual quantities. Matching a particular part and finding samples is something that they take pride in – and will go the extra mile to keep their customers happy.

Read more.

Adafruit publishes a wide range of writing and video content, including interviews and reporting on the maker market and the wider technology world. Our standards page is intended as a guide to best practices that Adafruit uses, as well as an outline of the ethical standards Adafruit aspires to. While Adafruit is not an independent journalistic institution, Adafruit strives to be a fair, informative, and positive voice within the community – check it out here: adafruit.com/editorialstandards

Join Adafruit on Mastodon

Adafruit is on Mastodon, join in! adafruit.com/mastodon

Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.

Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Join over 36,000+ makers on Adafruit’s Discord channels and be part of the community! http://adafru.it/discord

CircuitPython – The easiest way to program microcontrollers – CircuitPython.org

Maker Business — “Packaging” chips in the US

Wearables — Enclosures help fight body humidity in costumes

Electronics — Transformers: More than meets the eye!

Python for Microcontrollers — Python on Microcontrollers Newsletter: Silicon Labs introduces CircuitPython support, and more! #CircuitPython #Python #micropython @ThePSF @Raspberry_Pi

Adafruit IoT Monthly — Guardian Robot, Weather-wise Umbrella Stand, and more!

Microsoft MakeCode — MakeCode Thank You!

EYE on NPI — Maxim’s Himalaya uSLIC Step-Down Power Module #EyeOnNPI @maximintegrated @digikey

New Products – Adafruit Industries – Makers, hackers, artists, designers and engineers! — #NewProds 7/19/23 Feat. Adafruit Matrix Portal S3 CircuitPython Powered Internet Display!

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !

No Comments

No comments yet.

Sorry, the comment form is closed at this time.