The STC15W4K16S4 is a low power consumption microcontroller produced by STC. It has a low-voltage, low-power 8-bit single-chip computer that integrates RAM, ROM, I/O ports, and other peripheral resources. It has a high integration level and good cost performance. It is especially suitable for the application of household appliances, meters, electronic toys, and other control devices. The STC15W4K16S4 comes in a 44-pin 10mm x 10mm plastic QFP package, and is RoHS compliant.