STC MCU Software

Latest ISP software for programming microcontrollers STC that I found on is:

It may be useful older versions:


for older STC processors like STC89C51 and STC89C52 you can try this:

For Linux users:


Updated: June 27, 2016 — 6:23 pm


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  1. is it possible to program a stc12c5a60s2 using MISO, MOSI and SCK from a USBtinyISP? if so how?

  2. hi
    link`s not working anymore???

    1. I checked right now. The links seem to work for me.
      Let me know if you did not succeed to download…
      I will find a way to fix this… eventually I will upload here all versions.

  3. Please can help me how to i programming ic stc 608

  4. Hi,

    Does anyone please have a simple working A/D routine for the STC12C56xxAD series of processors? I cannot get the example routine in the document files going.

    The “ORL A, #ADC_POWER | ADC_SPEEDLL | ADC_START” statement is not clear and not handled by the assembler.

    One example also mentions “ADCCH DATA 20H” and the assembler rejects this also.

    Many thanks.

  5. HOW CAN I READ THE CODE FROM STC 89le52rc ITS allready pluged into a board and i have rx and tx outed from it
    please help 🙂

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