This is an electronic part manufactured by STC (Shenzhen Sino Tian Cheng Technology Co.). It is a low power 8-bit Single Chip MCU unit, packaged in an SOIC-16_150mil RoHS enclosure for surface mounting on a circuit board. The part is STC11L02E-35I-SOP16. The STC11L02E chip contains an 8-bit CPU with four 8-bit registers and two programmable timer/counters. It has a total of 8Kbytes of program memory, 1Kbyte RAM storage, 4Kbytes of Flash memory, and a single data exchange port. It also features SPI and I²C communication protocols and a hardware, real-time, clock/calendar (RTCC) counter. It is a low power MCU chip designed for usage in small portable devices.