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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.

They have had two websites in the past, sometimes it can be a challenge to find what you’re looking for. I’ve worked extensively with the STC chips and while dataheet are decent, reliable and cheap, there is zero library support compared to Arduino.

(PDF) STC12C2052AD Datasheet download

Here’s an “english” datasheet for a 122c052ad chip: 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.


If it does, the bootloader process is invoked, otherwise it jumps to the user program.

You can compile C based programs for the device with SDCC public domain and download with a serial device, these days that means a USB to serial converter plus a switch and some diodes which is well documented in the STC literature. There are tons of STC “development boards” on Aliexpress.

12CAD pdf Datasheet P1 Part Num IC-ON-LINE

You’ll need a logic analyzer to figure out what display driver you have. If you don’t know thestart here: Realistically, you need at least one more original “flasher” board for testing and experimentation. Hi got a flasher, I removed the case to see what’s inside. Another starting fatasheet is Github.

Rather than issuing a reset to enter the bootloader code, you toggle VCC. 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 will be writing almost everything you dafasheet, from scratch.


If you’re someone who gives up easily, don’t start. This requirement is well documented in the datasheets as previously mentioned. Upon wake up, the processor waits for a certain time for a serial character to appear on a predefined com 12c2052av.

STC 12C5A16AD programming with arduino

If you’re fluent in Mandarin Chinese, there is considerably more support and code sharing since the product is sponsored by the Chinese government. I guarantee you the journey will be long. Outside of the domestic Chinese market there is zero, zip, nada support. Is it possible to use arduino to program this chip?

Find one with the same series part you have 12C and start there. Downloading a program datasheeh similar to the Arduino process with several exceptions.