The STC15W4K32S4 microcontroller is a 64-pin LQFP package developed by STC that has 10x10x05P dimensions. It is a RoHS compliant component and can operate up to 16MHz frequency and operate in 2.0V to 5.5V range. The microcontroller contains 8KB of RAM and 32KB of on-chip ROM. It also supports 10 ADC channels, two UARTs, three I2C buses, and three PWM channels. It has 128-bit multi-stage programmable Low-voltage Detect and Full-range-Detect. It offers low power consumption with high efficient power sources. Its built-in watchdog timer can detect any misoperation of user program and gives immediate reset to ensure system reliability. With the 4K/8K operation time and WDT support, STC15W4K32S4 is ideal for monitoring equipments and control systems.