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Is it possible to use arduino to program this chip?

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. Find one with the same series part you have 12C and start there. Realistically, you need at least one more original “flasher” board for testing and experimentation.

Downloading a program is similar to the Arduino process with several exceptions. Outside of the domestic Chinese market there is zero, zip, nada support.

【12C2052AD STC】Electronic Components In Stock Suppliers in 2018【Price】【Datasheet PDF】USA

Here’s an “english” datasheet for a similar chip: Another starting resource is Github. This requirement is well documented in the datasheets as previously mentioned.


I guarantee you the journey will be long. The other difference is that isolation diodes are required in the rx and tx lines of the serial adapter to dataseet parasitic powering of the processor which would prevent the power cycle required to enter the bootloader. There are tons of STC “development boards” on Aliexpress.

If you’re fluent in Mandarin Chinese, there is considerably more support and code sharing since the product is sponsored datasheet the Chinese government. You’ll need a logic analyzer to figure out what display driver you have.

STC 12C5A16AD programming with 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 will be writing almost everything you need, from scratch. Rather than issuing a reset to enter the bootloader code, you toggle VCC.

If it does, the bootloader process is invoked, otherwise it jumps to the user program. They have had two websites in the past, sometimes it can be a challenge to find what you’re looking for.


You can compile C based programs for the device with SDCC public domain and download with a serial device, adtasheet days that means a USB to serial converter plus a switch and some diodes which is well documented in the STC literature.

Hi got a flasher, I removed the case to see what’s inside. I have found adapter boards with cable jacks to be 12c2052ar 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.

Upon wake up, the processor waits for a certain time for a serial character to appear on a predefined com port. If you’re someone who gives datashwet easily, don’t start.