The STC15W4K32S4-30I-SOP28 is an STC microcontroller that comes in an SOP-28 package with 300mil RoHS compliance and is manufactured by STC. It has 32K bytes of flash memory, 4K bytes of RAM, a maximum operating speed of 30MHz, and can execute up to 1MIPS. It also features an in-system programmable serial bootloader, two 8-bit Timer/Counters, a 16-bit timer/counter, and one pulse width modulation output channel. This microcontroller can be used in a wide range of embedded applications.