The document describes the features and characteristics of the TOP51 single-chip microcontroller comprehensive experimental system from Aijing Electronics website.
The Aijing TOP51 microcontroller development board is a comprehensive learning platform that supports STC 1T single‑chip microcontrollers. It integrates 26 modules—including TF‑card, PS/2 keyboard, LCD, A/D converter, motor drivers, and more—providing a rich set of experiments for beginners and advanced users alike. All 36 I/O pins are exposed via the J3 header for easy external connections.
The board is powered via a selectable 5 V or 3.3 V supply using shorting caps on the J1 pins, and it features a replaceable crystal oscillator (10 MHz, 11.0592 MHz, 12 MHz, 22.1184 MHz). Detailed instructions cover USB power and programming, LCD contrast adjustment, component installation directions, and safety precautions such as correct DS18B20 orientation. This manual is written in Chinese.
| Dimensions | 135 mm × 109 mm × 21 mm |
|---|---|
| Integrated modules | 26 modules |
| I/O pins | 36 I/O pins |
Turn the potentiometer RP2 clockwise to increase contrast; a small counter‑clockwise turn reduces it.