The STC12C5202AD-35I-PDIP28 is a 28-pin DIP (dual in-line package) microcontroller manufactured by STC. It is RoHS (Restriction of Hazardous Substances) compliant and has a pin pitch of 300 mil. This microcontroller has 8K bytes of program memory, 256 bytes of data memory, two 8-bit timer/counters, power down modes, serial port, 8 channels A/D converter, Brown Out Reset circuit, PWM, I2C, SPI, and multi-interrupt sources. It operates at a clock frequency of 36 MHz and has an operating temperature range of -40°C to 85°C.