MicroThe STC12C4052AD is a microcontroller chip manufactured by STC Micro. It is a 20-pin dual inline plastic (DIP) package with a 300 mil body size, rated for a voltage of 3.3V. It features a 4052-bit CMOS technology, as well as a low-power and high-speed 12-bit CISC single-chip microcontroller. It has ports that support a variety of interfaces, including SPI, I2C, PWM, and UART. The chip also has a rich collection of peripherals, including a watchdog timer, an ADC, two independent 12-bit timers, and a bus controller. It is a RoHS-compliant device designed to meet the latest environmental regulations.