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Hi got a flasher, I removed the case to see what’s inside. Is it possible to use arduino to program this chip? You can compile C based programs for the device with SDCC public domain and download with a serial datashedt, these days that means a USB to serial converter plus a switch and some diodes which is well documented in the STC literature.

stc+12cad datasheet & applicatoin notes – Datasheet Archive

If you don’t know thestart here: I’ve worked extensively with the STC chips and while they are decent, reliable and cheap, there is zero library support compared to Arduino. STC provides demo code for using the timers, serial, PWM and ADC subsections, it’s up to you to make what you need which means you datashwet be writing almost everything you need, from scratch.


If you’re fluent in Mandarin Chinese, there is considerably more support and code sharing since the product is sponsored by the Chinese government. Outside of the domestic Chinese market there is zero, zip, nada support.

STCCAD Micro-controller wth arduino UNO r3

There are tons of STC “development boards” on Aliexpress. Find one with the same series part you have 12C and start there. You’ll need a logic analyzer to figure out what display driver you have.

Realistically, you need at least one more original “flasher” board for testing and experimentation. I guarantee you the journey will be long.

If you’re someone who gives up easily, don’t start. Here’s an “english” datasheet for a similar chip: They have had two websites in the past, sometimes it can be a challenge to find what you’re looking for.

Another starting resource is Github. Downloading a program is similar to the Arduino process with several exceptions.

STC12C2052AD Datasheet PDF

Rather than issuing a reset to enter the bootloader code, you toggle VCC. Upon wake up, the processor waits for a certain time for a serial character to appear on a predefined com port.


If it does, the bootloader process is invoked, otherwise it jumps to the user program. The other difference is that isolation diodes are required in the rx and tx lines of the serial adapter to prevent parasitic powering of the processor which would prevent the power cycle required to enter the bootloader. This requirement is well documented in the datasheets as previously mentioned.

I have found adapter boards with cable jacks to be easier to deal with so I can use standard cables rather than the extension cable that would be required for the plug on the front of the cp board.