Compact STC89C52 Dev Board with ISP

Measuring just 90 mm × 77 mm (3.54 in × 3.03 in), this STC89C52 development board delivers maximum functionality in a space-efficient footprint. Powered by DC5V via external supply (USB-compatible), it maintains stable operation across diverse workloads. The STC89C52 microcontroller runs at either 11.0592 MHz or 12 MHz, offering precise timing for serial communication and time-sensitive applications. Onboard features include an ISP programming interface (compatible with AT89S52 and ATMEGA16), active buzzer, power switch and indicator, TX/RX status LEDs, PL2303 USB-serial bridge, DS18B20 temperature sensor connector, 38 kHz IR receiver header, ZIF socket for secure chip mounting, and dedicated headers for both LCD1602 and LCD12864 displays. Its circuit design prioritises signal integrity and ease of access — all key pins are clearly labelled and breakout-friendly. The board supports standard Keil C51 toolchains and STC-ISP software, making it suitable for both introductory coursework and intermediate embedded projects. Used widely in UK technical colleges and maker spaces, it bridges theory and practice by letting learners implement real-world functions — from temperature monitoring to IR remote control — without external modules or breadboard clutter.