STC8G2K64S4 development board

STC8G2K64S4 development board

- The main control chip used in the STC8GK60S4 development board: STC8G2K64S4-36I-LQFP48, with automatic download circuit, all IO ports, a reset button, and a 32M crystal oscillator. You can choose the crystal oscillator and frequency according to personal needs.

- One point to note, if you are transplanting part of the circuit, please note that the automatic download circuit must not have a filter capacitor with an excessively large value for the target burning chip. After testing, if 47uf and 22uf capacitors are used in parallel next to the power supply of the burning target chip, the automatic download will not respond. (The original design was like this, but it ended up falling into this trap.) In other words, it is best to only connect 10uf plus 0.1uf plus 0.01uf in parallel next to the power supply for the main control chip, and only need to filter out high-frequency signals.

> At present, STC8GK60S4 chips in this package are cheap, with the current purchase price of 4.8 yuan. CH340G is currently the cheapest, and other models are very expensive. The cost of learning a self-made development board is relatively low, and the cost will not exceed 10 yuan. If you buy a finished development board, you really can't buy it for less than dozens of yuan.

- The package sizes used are all made of 0805 materials. Except for the main control chip, which is difficult to weld by hand, the others are relatively easy to weld. The welding master only needs to align the position, first weld a pin on one side to fix it, and then the rest of the operation is done by dragging and welding. The plug-in capacitors on the original version have been removed and replaced with 0805 chip capacitors.

### The original version has been successfully debugged and verified, and the pitfalls encountered during the production of the first Forerunner have been eliminated.

- Demonstrate MCU information detection and programming operations through STC-ISP software

- After the development board is produced, set the reference when burning for the first time through STC-ISP software