The SM51F20TS4 is a Other Processors and Microcontrollers (MCUs) SSOP-20_150mil RoHS manufactured by SINOMICON and is an 8-bit controller that is designed for small power applications and embedded system applications. It features an 8-bit CPU core, internal ROM, 8K bytes of RAM, and 40IO ports. It has the capability to support various remote control applications and offers low power operation. It also has excellent operation performance and integrates a timer, watch-dog timer, and pulse train output module. The SM51F20TS4 has a working voltage of 2.0V to 5.5V, and can work at temperatures ranging from -40? to 85?. The electrical characteristics of this product indicate that it is suitable for a wide range of applications.