To determine whether a chip is an MCU chip:
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1. See if there is a crystal oscillator next to the chip, it is basically an MCU chip;
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2, look at the chip model, the chip printed on the model, and then you can look up the corresponding pdf document on google;
MCU chip introduction: An MCU chip is an integrated circuit chip, It is the use of very large scale integrated circuit technology to integrate the central processor CPU, random access memory RAM, read-only memory ROM, A variety of I\/O ports and interrupt systems, timers\/counters and other functions (may also include display driver circuit, pulse width modulation circuit, analog multiplexer, A\/D converter and other circuits) into a silicon chip A small and perfect microcomputer system, widely used in the field of industrial control. From the 1980s, from the then 4-bit, 8-bit single-chip microcomputer, developed to the present 300M high-speed single-chip microcomputer.