The STC15W401AS-35I-DIP20 with STC DIP-20 RoHS is a low-power single-chip microcontroller device manufactured by STC (Shenzhen Technology Co., Ltd.). It is based on an 8051-core architecture and features a wide range of peripheral functions, including 256K Flash ROM, 16K SRAM, LCD driver, PWM, 12-bit ADC, SPI, UART and I2C interfaces and an on-chip RC oscillator. The device is designed for a wide range of applications including motor control, industrial automation, appliances, and home automation. It is available in a 20-pin Dual Inline Package (DIP) format with RoHS (Restriction of Hazardous Substances) compliant lead-free finishes.