The STC12C5202AD-35I-DIP-18 is a 8-bit microcontroller designed and manufactured by STC Microelectronics. It has a single-chip 8051 CPU core, and is packaged on an 18-pin DIP form factor with RoHS compliance. It features on-chip ROM, RAM, and 8-bit I/O ports. It supports four pulse width modulation (PWM) channels, three 16-bit timer/counters, and three serial buses. It has a 35MHz operating frequency, and can provide an operating voltage of 4.75V to 5.5V. It is suitable for applications such as automotive electronics, consumer electronics, and industrial control.