The STC15W401AS-35I-SOP28 is a single-chip 8-bit MCU manufactured by STC. It is a high-performance CMOS 8-bit microcontroller with flash program memory, featuring a host of peripheral and I/O capabilities. It has 15K fl ash program memory, 1K RAM memory, 10/16 bit timers , 3 enhanced capture/compare/PWM channels, an SPI interface, an AJU, 8 parallel inputs/outputs, 8 analog comparators, a Watchdog Timer (WDT), an Integrated Oscillator and an 8-bit multiplier. It comes in a SOP-28_300mil RoHS package.